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  1. Book ; Online: Study of $e^+e^-\to\gamma\phi J/\psi$ from $\sqrt{s}=4.600$ to $4.951$ GeV

    BESIII Collaboration / Ablikim, M. / Achasov, M. N. / Adlarson, P. / Albrecht, M. / Aliberti, R. / Amoroso, A. / An, M. R. / An, Q. / Bai, Y. / Bakina, O. / Ferroli, R. Baldini / Balossino, I. / Ban, Y. / Batozskaya, V. / Becker, D. / Begzsuren, K. / Berger, N. / Bertani, M. /
    Bettoni, D. / Bianchi, F. / Bianco, E. / Bloms, J. / Bortone, A. / Boyko, I. / Briere, R. A. / Brueggemann, A. / Cai, H. / Cai, X. / Calcaterra, A. / Cao, G. F. / Cao, N. / Cetin, S. A. / Chang, J. F. / Chang, W. L. / Che, G. R. / Chelkov, G. / Chen, C. / Chen, Chao / Chen, G. / Chen, H. S. / Chen, M. L. / Chen, S. J. / Chen, S. M. / Chen, T. / Chen, X. R. / Chen, X. T. / Chen, Y. B. / Chen, Z. J. / Cheng, W. S.

    2022  

    Abstract: Using data samples with an integrated luminosity of $6.4$~fb$^{-1}$ collected by the BESIII detector operating at the BEPCII storage ring, the process of $e^+e^-\to\gamma\phi J/\psi$ is studied. The processes of $e^+e^-\to\phi\chi_{c1,c2}$, $\chi_{c1,c2}\ ...

    Abstract Using data samples with an integrated luminosity of $6.4$~fb$^{-1}$ collected by the BESIII detector operating at the BEPCII storage ring, the process of $e^+e^-\to\gamma\phi J/\psi$ is studied. The processes of $e^+e^-\to\phi\chi_{c1,c2}$, $\chi_{c1,c2}\to\gamma J/\psi$ are observed with a significance of more than $10\sigma$. The $\sqrt{s}$-dependent cross section of $e^+e^- \to \phi\chi_{c1,c2}$ is measured between 4.600 and 4.951~GeV, and evidence of a resonance structure is found for the first time in the $\phi\chi_{c2}$ process. We also search for the processes of $e^+e^-\to\gamma X(4140)$, $\gamma X(4274)$ and $\gamma X(4500)$ via the $\gamma\phi J/\psi$ final state, but no obvious structures are found. The upper limits on the production cross section times the branching fraction for these processes at the 90% confidence level are reported.

    Comment: 35 pages, 9 figures
    Keywords High Energy Physics - Experiment
    Subject code 612
    Publishing date 2022-10-24
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Book ; Online: First Direct Measurement of the Absolute Branching Fraction of $\Sigma^+ \to \Lambda e^+ \nu_{e}$

    BESIII Collaboration / Ablikim, M. / Achasov, M. N. / Adlarson, P. / Aliberti, R. / Amoroso, A. / An, M. R. / An, Q. / Bai, Y. / Bakina, O. / Ferroli, R. Baldini / Balossino, I. / Ban, Y. / Batozskaya, V. / Becker, D. / Begzsuren, K. / Berger, N. / Bertani, M. / Bettoni, D. /
    Bianchi, F. / Bianco, E. / Bloms, J. / Bortone, A. / Boyko, I. / Briere, R. A. / Brueggemann, A. / Cai, H. / Cai, X. / Calcaterra, A. / Cao, G. F. / Cao, N. / Cetin, S. A. / Chang, J. F. / Chang, T. T. / Chang, W. L. / Che, G. R. / Chelkov, G. / Chen, C. / Chen, Chao / Chen, G. / Chen, H. S. / Chen, M. L. / Chen, S. J. / Chen, S. M. / Chen, T. / Chen, X. R. / Chen, X. T. / Chen, Y. B. / Chen, Y. Q. / Chen, Z. J.

    2022  

    Abstract: The first direct measurement of the absolute branching fraction of $\Sigma^+ \to \Lambda e^+ \nu_{e}$ is reported based on an $e^+e^-$ annihilation sample of $(10087\pm44) \times 10^6$ $J/\psi$ events collected with the BESIII detector at $\sqrt{s}=3.097$ ...

    Abstract The first direct measurement of the absolute branching fraction of $\Sigma^+ \to \Lambda e^+ \nu_{e}$ is reported based on an $e^+e^-$ annihilation sample of $(10087\pm44) \times 10^6$ $J/\psi$ events collected with the BESIII detector at $\sqrt{s}=3.097$ GeV. The branching fraction is determined to be ${\mathcal B}(\Sigma^+ \to \Lambda e^+ \nu_{e}) = [2.93\pm0.74(\rm stat) \pm 0.13(\rm syst)]\times 10^{-5}$, which is the most precise measurement obtained in a single experiment to date and also the first result obtained at a collider experiment. Combining this result with the world average of ${\mathcal B}(\Sigma^- \to \Lambda e^- \bar{\nu}_{e})$ and the lifetimes of $\Sigma^{\pm}$, the ratio, $\frac{\Gamma(\Sigma^- \to \Lambda e^- \bar{\nu}_{e})}{\Gamma(\Sigma^+ \to \Lambda e^+ \nu_{e})}$, is determined to be $1.06 \pm 0.28$, which is within 1.8 standard deviations of the value expected in the absence of second-class currents that are forbidden in the Standard Model.

    Comment: 8 pages, 3 figures
    Keywords High Energy Physics - Experiment ; High Energy Physics - Phenomenology
    Subject code 612
    Publishing date 2022-12-10
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Book ; Online: First Observation of the Semileptonic Decay $\Lambda_c^+\rightarrow pK^- e^+\nu_e$

    Ablikim, M. / Achasov, M. N. / Adlarson, P. / Albrecht, M. / Aliberti, R. / Amoroso, A. / An, M. R. / An, Q. / Bai, X. H. / Bai, Y. / Bakina, O. / Ferroli, R. Baldini / Balossino, I. / Ban, Y. / Batozskaya, V. / Becker, D. / Begzsuren, K. / Berger, N. / Bertani, M. /
    Bettoni, D. / Bianchi, F. / Bloms, J. / Bortone, A. / Boyko, I. / Briere, R. A. / Brueggemann, A. / Cai, H. / Cai, X. / Calcaterra, A. / Cao, G. F. / Cao, N. / Cetin, S. A. / Chang, J. F. / Chang, W. L. / Chelkov, G. / Chen, C. / Chen, Chao / Chen, G. / Chen, H. S. / Chen, M. L. / Chen, S. J. / Chen, S. M. / Chen, T. / Chen, X. R. / Chen, X. T. / Chen, Y. B. / Chen, Z. J. / Cheng, W. S. / Choi, S. K. / Chu, X.

    2022  

    Abstract: Using $4.5 \mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data samples collected at the center-of-mass energies ranging from 4.600 GeV to 4.699 GeV with the BESIII detector at the BEPCII collider, a first study of $\Lambda_c^+$ decaying semileptonically into ...

    Abstract Using $4.5 \mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data samples collected at the center-of-mass energies ranging from 4.600 GeV to 4.699 GeV with the BESIII detector at the BEPCII collider, a first study of $\Lambda_c^+$ decaying semileptonically into the inclusive $pK^-$ system $\Lambda_c^+\rightarrow pK^-e^+\nu_e$ is performed. The $\Lambda_c^+\rightarrow pK^-e^+\nu_e$ decay is observed with a significance of $8.2\sigma$ and the branching fraction is measured to be $\mathcal{B}(\Lambda_c^+\rightarrow pK^- e^+\nu_e)=(0.82\pm0.15_{\rm stat.}\pm0.06_{\rm syst.})\times 10^{-3}$. In addition, first evidence for the decay $\Lambda_c^+\rightarrow \Lambda(1520) e^+\nu_e$ is obtained with a significance of $3.3\sigma$ and the branching fraction is measured to be $\mathcal{B}(\Lambda_c^+\rightarrow \Lambda(1520) e^+\nu_e)=(1.36\pm0.56_{\rm stat.}\pm0.14_{\rm syst.})\times 10^{-3}$. We also measure the branching fraction for $\Lambda_c^+\rightarrow pK^-_{\rm non-\Lambda(1520)} e^+\nu_e$ to be $\mathcal{B}(\Lambda_c^+\rightarrow pK^-_{\rm non-\Lambda(1520)} e^+\nu_e)=(0.53\pm0.15_{\rm stat.}\pm0.06_{\rm syst.})\times 10^{-3}$. Using a measurement of the inclusive semileptonic $\Lambda_c^+$ branching fraction from BESIII, the relative branching fractions are determined to be $[\mathcal{B}(\Lambda_c^+\rightarrow pK^-e^+\nu_e)/\mathcal{B}(\Lambda_c^+\rightarrow X e^+\nu_e)]=(2.1\pm0.4_{\rm stat.}\pm0.1_{\rm syst.})\%$ and $[\mathcal{B}(\Lambda_c^+\rightarrow \Lambda^*(1520) e^+\nu_e)/\mathcal{B}(\Lambda_c^+\rightarrow X e^+\nu_e)]=(3.4\pm1.4_{\rm stat.}\pm0.4_{\rm syst.})\%$. These measurements provide a clear confirmation that semileptonic $\Lambda_c^+$ decays are not saturated by the $\Lambda \ell^+\nu_{\ell}$ final state.

    Comment: 13 pages, 9 figures and 2 tables
    Keywords High Energy Physics - Experiment
    Subject code 612
    Publishing date 2022-07-23
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Book ; Online: Amplitude analysis and branching-fraction measurement of $D_{s}^{+} \to \pi^{+}\pi^{0}\eta^{\prime}$

    BESIII Collaboration / Ablikim, M. / Achasov, M. N. / Adlarson, P. / Albrecht, M. / Aliberti, R. / Amoroso, A. / An, M. R. / An, Q. / Bai, X. H. / Bai, Y. / Bakina, O. / Ferroli, R. Baldini / Balossino, I. / Ban, Y. / Batozskaya, V. / Becker, D. / Begzsuren, K. / Berger, N. /
    Bertani, M. / Bettoni, D. / Bianchi, F. / Bloms, J. / Bortone, A. / Boyko, I. / Briere, R. A. / Brueggemann, A. / Cai, H. / Cai, X. / Calcaterra, A. / Cao, G. F. / Cao, N. / Cetin, S. A. / Chang, J. F. / Chang, W. L. / Chelkov, G. / Chen, C. / Chen, Chao / Chen, G. / Chen, H. S. / Chen, M. L. / Chen, S. J. / Chen, S. M. / Chen, T. / Chen, X. R. / Chen, X. T. / Chen, Y. B. / Chen, Z. J. / Cheng, W. S. / Chu, X.

    2022  

    Abstract: Using data collected with the BESIII detector in $e^+e^-$ collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32~fb$^{-1}$ of integrated luminosity, we report the amplitude analysis and branching-fraction measurement ... ...

    Abstract Using data collected with the BESIII detector in $e^+e^-$ collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32~fb$^{-1}$ of integrated luminosity, we report the amplitude analysis and branching-fraction measurement of the $D^+_s \to \pi^+ \pi^0 \eta^{\prime}$ decay. We find that the dominant intermediate process is $D^+_s \to\rho^+ \eta^{\prime}$ and the significances of other resonant and nonresonant processes are all less than $3\sigma$. The upper limits on the branching fractions of $S$-wave and $P$-wave nonresonant components are set to $0.10\%$ and $0.74\%$ at the $90\%$ confidence level, respectively. In addition, the branching fraction of the $D^+_s \to \pi^+ \pi^0 \eta^{\prime}$ decay is measured to be $(6.15\pm0.25(\rm stat.)\pm0.18(\rm syst.))\%$, which receives significant contribution only from $D_s^+\to \rho^+\eta^{\prime}$ according to the amplitude analysis.
    Keywords High Energy Physics - Experiment
    Subject code 551
    Publishing date 2022-02-08
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Book ; Online: Revisiting the 'LSND anomaly' I

    Group, The HARP-CDP / : / Bolshakova, A. / Boyko, I. / Chelkov, G. / Dedovitch, D. / Elagin, A. / Emelyanov, D. / Gostkin, M. / Guskov, A. / Kroumchtein, Z. / Nefedov, Y. / Nikolaev, K. / Zhemchugov, A. / Dydak, F. / Wotschack, J. / De Min, A. / Ammosov, V. / Gapienko, V. /
    Koreshev, V. / Semak, A. / Sviridov, Y. / Usenko, E. / Zaets, V.

    impact of new data

    2011  

    Abstract: This paper, together with a subsequent paper, questions the so-called 'LSND anomaly': a 3.8 {\sigma} excess of anti-electronneutrino interactions over standard backgrounds, observed by the LSND Collaboration in a beam dump experiment with 800 MeV protons. ...

    Abstract This paper, together with a subsequent paper, questions the so-called 'LSND anomaly': a 3.8 {\sigma} excess of anti-electronneutrino interactions over standard backgrounds, observed by the LSND Collaboration in a beam dump experiment with 800 MeV protons. That excess has been interpreted as evidence for the anti-muonneutrino{\to} anti-electronneutrino oscillation in the {\Delta}m2 range from 0.2 eV2 to 2 eV2. Such a {\Delta}m2 range is incompatible with the widely accepted model of oscillations between three light neutrino species and would require the existence of at least one light 'sterile' neutrino. In this paper, new data on pion production by protons on nuclei are presented, and four decades old data on pion production by neutrons on nuclei are recalled, that together increase significantly the estimates of standard backgrounds in the LSND experiment, and decrease the significance of the 'LSND anomaly' from 3.8 {\sigma} to 2.9 {\sigma}. In a subsequent paper, in addition the LSND Collaboration's data analysis will be questioned, rendering a further reduction of the significance of the 'LSND anomaly'.

    Comment: 35 pages, 12 figures
    Keywords High Energy Physics - Experiment
    Subject code 551
    Publishing date 2011-10-19
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Search for Λ[over ¯]-Λ Baryon-Number-Violating Oscillations in the Decay J/ψ→pK^{-}Λ[over ¯]+c.c.

    Ablikim, M / Achasov, M N / Adlarson, P / Ahmed, S / Albrecht, M / Aliberti, R / Amoroso, A / An, Q / Bai, Y / Bakina, O / Ferroli, R Baldini / Balossino, I / Ban, Y / Begzsuren, K / Berger, N / Bertani, M / Bettoni, D / Bianchi, F / Bloms, J /
    Bortone, A / Boyko, I / Briere, R A / Cai, H / Cai, X / Calcaterra, A / Cao, G F / Cao, N / Cetin, S A / Chang, J F / Chang, W L / Chelkov, G / Chen, G / Chen, H S / Chen, M L / Chen, S J / Chen, X R / Chen, Y B / Chen, Z J / Cheng, W S / Cibinetto, G / Cossio, F / Dai, H L / Dai, J P / Dai, X C / Dbeyssi, A / de Boer, R E / Dedovich, D / Deng, Z Y / Denig, A / Denysenko, I / Destefanis, M / De Mori, F / Ding, Y / Dong, J / Dong, L Y / Dong, M Y / Dong, X / Du, S X / Fang, J / Fang, S S / Fang, Y / Farinelli, R / Fava, L / Feldbauer, F / Felici, G / Feng, C Q / Fritsch, M / Fu, C D / Gao, Y N / Gao, Ya / Gao, Yang / Garzia, I / Gersabeck, E M / Gilman, A / Goetzen, K / Gong, L / Gong, W X / Gradl, W / Greco, M / Gu, L M / Gu, M H / Gu, S / Gu, Y T / Guan, C Y / Guo, A Q / Guo, L B / Guo, R P / Guo, Y P / Guskov, A / Han, T T / Hao, X Q / Harris, F A / He, K L / Heinsius, F H H / Heinz, C H / Heng, Y K / Herold, C / Himmelreich, M / Holtmann, T / Hou, Y R / Hou, Z L / Hu, H M / Hu, J F / Hu, T / Hu, Y / Huang, G S / Huang, L Q / Huang, X T / Huang, Y P / Hussain, T / Imoehl, W / Irshad, M / Jaeger, S / Janchiv, S / Ji, Q / Ji, Q P / Ji, X B / Ji, X L / Jiang, X S / Jiao, J B / Jiao, Z / Jin, S / Jin, Y / Johansson, T / Kalantar-Nayestanaki, N / Kang, X S / Kappert, R / Kavatsyuk, M / Ke, B C / Keshk, I K / Khoukaz, A / Kiese, P / Kiuchi, R / Kliemt, R / Kolcu, O B / Kopf, B / Kuemmel, M / Kuessner, M K / Kupsc, A / Kurth, M G / Kühn, W / Lane, J J / Larin, P / Lavania, A / Lavezzi, L / Lei, Z H / Leithoff, H / Lellmann, M / Lenz, T / Li, C / Li, C H / Li, Cheng / Li, D M / Li, F / Li, G / Li, H / Li, H B / Li, H J / Li, J Q / Li, J W / Li, Ke / Li, L K / Li, Lei / Li, P L / Li, P R / Li, S Y / Li, W D / Li, W G / Li, X H / Li, X L / Li, Z Y / Liang, H / Liang, Y F / Liang, Y T / Liao, G R / Liao, L Z / Libby, J / Limphirat, A / Liu, B J / Liu, C X / Liu, D / Liu, F H / Liu, Fang / Liu, Feng / Liu, H B / Liu, H M / Liu, Huanhuan / Liu, Huihui / Liu, J B / Liu, J Y / Liu, K / Liu, K Y / Liu, L / Liu, M H / Liu, Q / Liu, S B / Liu, Shuai / Liu, T / Liu, W M / Liu, X / Liu, Y B / Liu, Z A / Liu, Z Q / Lou, X C / Lu, F X / Lu, H J / Lu, J D / Lu, J G / Lu, X L / Lu, Y / Lu, Y P / Luo, C L / Luo, M X / Luo, T / Luo, X L / Lusso, S / Lyu, X R / Ma, F C / Ma, H L / Ma, L L / Ma, M M / Ma, Q M / Ma, R Q / Ma, R T / Ma, X X / Ma, X Y / Maas, F E / Maggiora, M / Maldaner, S / Malde, S / Malik, Q A / Mangoni, A / Mao, Y J / Mao, Z P / Marcello, S / Meng, Z X / Messchendorp, J G / Mezzadri, G / Min, T J / Mitchell, R E / Mo, X H / Muchnoi, N Yu / Muramatsu, H / Nakhoul, S / Nefedov, Y / Nerling, F / Nikolaev, I B / Ning, Z / Nisar, S / Olsen, S L / Ouyang, Q / Pacetti, S / Pan, X / Pan, Y / Pathak, A / Patteri, P / Pelizaeus, M / Peng, H P / Peters, K / Ping, J L / Ping, R G / Pitka, A / Poling, R / Prasad, V / Qi, H / Qi, H R / Qi, M / Qi, T Y / Qian, S / Qian, W B / Qiao, C F / Qin, L Q / Qin, X P / Qin, X S / Qin, Z H / Qiu, J F / Qu, S Q / Ravindran, K / Redmer, C F / Rivetti, A / Rodin, V / Rolo, M / Rong, G / Rosner, Ch / Sarantsev, A / Schelhaas, Y / Schnier, C / Schoenning, K / Scodeggio, M / Shan, D C / Shan, W / Shan, X Y / Shao, M / Shen, C P / Shen, P X / Shen, X Y / Shi, H C / Shi, R S / Shi, X / Shi, X D / Song, W M / Song, Y X / Sosio, S / Spataro, S / Su, K X / Sun, G X / Sun, J F / Sun, L / Sun, S S / Sun, T / Sun, W Y / Sun, Y J / Sun, Y K / Sun, Y Z / Sun, Z T / Tan, Y H / Tan, Y X / Tang, C J / Tang, G Y / Tang, J / Teng, J X / Thoren, V / Uman, I / Wang, B / Wang, B L / Wang, C W / Wang, D Y / Wang, H P / Wang, K / Wang, L L / Wang, M / Wang, Meng / Wang, W H / Wang, W P / Wang, X / Wang, X F / Wang, X L / Wang, Y / Wang, Y D / Wang, Y F / Wang, Y Q / Wang, Z / Wang, Z Y / Wang, Ziyi / Wang, Zongyuan / Wei, D H / Weidenkaff, P / Weidner, F / Wen, S P / White, D J / Wiedner, U W / Wilkinson, G / Wolke, M / Wollenberg, L / Wu, J F / Wu, L H / Wu, L J / Wu, X / Wu, Z / Xia, L / Xiao, H / Xiao, S Y / Xiao, Z J / Xie, X H / Xie, Y G / Xie, Y H / Xing, T Y / Xu, G F / Xu, J J / Xu, Q J / Xu, W / Xu, X P / Xu, Y C / Yan, F / Yan, L / Yan, W B / Yan, W C / Yan, Xu / Yang, H J / Yang, H X / Yang, L / Yang, S L / Yang, Y H / Yang, Yifan / Ye, M / Ye, M H / Yin, J H / You, Z Y / Yu, B X / Yu, C X / Yu, G / Yu, J S / Yu, T / Yuan, C Z / Yuan, L / Yuan, W / Yuan, Y / Yuan, Z Y / Yue, C X / Zafar, A A / Zeng, Y / Zhang, B X / Zhang, G Y / Zhang, H / Zhang, H H / Zhang, H Y / Zhang, J J / Zhang, J Q / Zhang, J W / Zhang, J Y / Zhang, J Z / Zhang, Jianyu / Zhang, Jiawei / Zhang, Lei / Zhang, S F / Zhang, X D / Zhang, X Y / Zhang, Y / Zhang, Y T / Zhang, Y H / Zhang, Yan / Zhang, Yao / Zhang, Z Y / Zhao, G / Zhao, J / Zhao, J Y / Zhao, J Z / Zhao, Lei / Zhao, Ling / Zhao, M G / Zhao, Q / Zhao, S J / Zhao, Y B / Zhao, Y X / Zhao, Z G / Zhemchugov, A / Zheng, B / Zheng, J P / Zheng, Y H / Zhong, B / Zhong, C / Zhou, L P / Zhou, Q / Zhou, X / Zhou, X K / Zhou, X R / Zhu, A N / Zhu, J / Zhu, K / Zhu, K J / Zhu, S H / Zhu, W J / Zhu, Y C / Zhu, Z A / Zou, B S / Zou, J H

    Physical review letters

    2023  Volume 131, Issue 12, Page(s) 121801

    Abstract: We report on the first search for Λ[over ¯]-Λ oscillations in the decay J/ψ→pK^{-}Λ[over ¯]+c.c. by analyzing 1.31×10^{9}  J/ψ events accumulated with the BESIII detector at the BEPCII collider. The J/ψ events are produced using e^{+}e^{-} collisions at ... ...

    Abstract We report on the first search for Λ[over ¯]-Λ oscillations in the decay J/ψ→pK^{-}Λ[over ¯]+c.c. by analyzing 1.31×10^{9}  J/ψ events accumulated with the BESIII detector at the BEPCII collider. The J/ψ events are produced using e^{+}e^{-} collisions at a center of mass energy sqrt[s]=3.097  GeV. No evidence for hyperon oscillations is observed. The upper limit for the oscillation rate of Λ[over ¯] to Λ hyperons is determined to be P(Λ)=[B(J/ψ→pK^{-}Λ+c.c.)/B(J/ψ→pK^{-}Λ[over ¯]+c.c.)]<4.4×10^{-6} corresponding to an oscillation parameter δm_{ΛΛ[over ¯]} of less than 3.8×10^{-18}  GeV at the 90% confidence level.
    Language English
    Publishing date 2023-10-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.131.121801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: First Measurement of the Decay Asymmetry in the Pure W-Boson-Exchange Decay Λ_{c}^{+}→Ξ^{0}K^{+}.

    Ablikim, M / Achasov, M N / Adlarson, P / Ai, X C / Aliberti, R / Amoroso, A / An, M R / An, Q / Bai, Y / Bakina, O / Balossino, I / Ban, Y / Batozskaya, V / Begzsuren, K / Berger, N / Berlowski, M / Bertani, M / Bettoni, D / Bianchi, F /
    Bianco, E / Bortone, A / Boyko, I / Briere, R A / Brueggemann, A / Cai, H / Cai, X / Calcaterra, A / Cao, G F / Cao, N / Cetin, S A / Chang, J F / Chang, T T / Chang, W L / Che, G R / Chelkov, G / Chen, C / Chen, Chao / Chen, G / Chen, H S / Chen, M L / Chen, S J / Chen, S M / Chen, T / Chen, X R / Chen, X T / Chen, Y B / Chen, Y Q / Chen, Z J / Cheng, W S / Choi, S K / Chu, X / Cibinetto, G / Coen, S C / Cossio, F / Cui, J J / Dai, H L / Dai, J P / Dbeyssi, A / de Boer, R E / Dedovich, D / Deng, Z Y / Denig, A / Denysenko, I / Destefanis, M / De Mori, F / Ding, B / Ding, X X / Ding, Y / Dong, J / Dong, L Y / Dong, M Y / Dong, X / Du, M C / Du, S X / Duan, Z H / Egorov, P / Fan, Y H Y / Fan, Y L / Fang, J / Fang, S S / Fang, W X / Fang, Y / Farinelli, R / Fava, L / Feldbauer, F / Felici, G / Feng, C Q / Feng, J H / Fischer, K / Fritsch, M / Fritzsch, C / Fu, C D / Fu, J L / Fu, Y W / Gao, H / Gao, Y N / Gao, Yang / Garbolino, S / Garzia, I / Ge, P T / Ge, Z W / Geng, C / Gersabeck, E M / Gilman, A / Goetzen, K / Gong, L / Gong, W X / Gradl, W / Gramigna, S / Greco, M / Gu, M H / Guan, C Y / Guan, Z L / Guo, A Q / Guo, L B / Guo, M J / Guo, R P / Guo, Y P / Guskov, A / Han, T T / Han, W Y / Hao, X Q / Harris, F A / He, K K / He, K L / Heinsius, F H H / Heinz, C H / Heng, Y K / Herold, C / Holtmann, T / Hong, P C / Hou, G Y / Hou, X T / Hou, Y R / Hou, Z L / Hu, H M / Hu, J F / Hu, T / Hu, Y / Huang, G S / Huang, K X / Huang, L Q / Huang, X T / Huang, Y P / Hussain, T / Hüsken, N / Imoehl, W / Jackson, J / Jaeger, S / Janchiv, S / Jeong, J H / Ji, Q / Ji, Q P / Ji, X B / Ji, X L / Ji, Y Y / Jia, X Q / Jia, Z K / Jiang, H J / Jiang, P C / Jiang, S S / Jiang, T J / Jiang, X S / Jiang, Y / Jiao, J B / Jiao, Z / Jin, S / Jin, Y / Jing, M Q / Johansson, T / K, X / Kabana, S / Kalantar-Nayestanaki, N / Kang, X L / Kang, X S / Kappert, R / Kavatsyuk, M / Ke, B C / Khoukaz, A / Kiuchi, R / Kliemt, R / Kolcu, O B / Kopf, B / Kuessner, M / Kupsc, A / Kühn, W / Lane, J J / Larin, P / Lavania, A / Lavezzi, L / Lei, T T / Lei, Z H / Leithoff, H / Lellmann, M / Lenz, T / Li, C / Li, C H / Li, Cheng / Li, D M / Li, F / Li, G / Li, H / Li, H B / Li, H J / Li, H N / Li, Hui / Li, J R / Li, J S / Li, J W / Li, K L / Li, Ke / Li, L J / Li, L K / Li, Lei / Li, M H / Li, P R / Li, Q X / Li, S X / Li, T / Li, W D / Li, W G / Li, X H / Li, X L / Li, Xiaoyu / Li, Y G / Li, Z J / Liang, C / Liang, H / Liang, Y F / Liang, Y T / Liao, G R / Liao, L Z / Liao, Y P / Libby, J / Limphirat, A / Lin, D X / Lin, T / Liu, B J / Liu, B X / Liu, C / Liu, C X / Liu, F H / Liu, Fang / Liu, Feng / Liu, G M / Liu, H / Liu, H M / Liu, Huanhuan / Liu, Huihui / Liu, J B / Liu, J L / Liu, J Y / Liu, K / Liu, K Y / Liu, Ke / Liu, L / Liu, L C / Liu, Lu / Liu, M H / Liu, P L / Liu, Q / Liu, S B / Liu, T / Liu, W K / Liu, W M / Liu, X / Liu, Y / Liu, Y B / Liu, Z A / Liu, Z Q / Lou, X C / Lu, F X / Lu, H J / Lu, J G / Lu, X L / Lu, Y / Lu, Y P / Lu, Z H / Luo, C L / Luo, M X / Luo, T / Luo, X L / Lyu, X R / Lyu, Y F / Ma, F C / Ma, H L / Ma, J L / Ma, L L / Ma, M M / Ma, Q M / Ma, R Q / Ma, R T / Ma, X Y / Ma, Y / Ma, Y M / Maas, F E / Maggiora, M / Malde, S / Malik, Q A / Mangoni, A / Mao, Y J / Mao, Z P / Marcello, S / Meng, Z X / Messchendorp, J G / Mezzadri, G / Miao, H / Min, T J / Mitchell, R E / Mo, X H / Muchnoi, N Yu / Muskalla, J / Nefedov, Y / Nerling, F / Nikolaev, I B / Ning, Z / Nisar, S / Niu, Y / Olsen, S L / Ouyang, Q / Pacetti, S / Pan, X / Pan, Y / Pathak, A / Patteri, P / Pei, Y P / Pelizaeus, M / Peng, H P / Peters, K / Ping, J L / Ping, R G / Plura, S / Pogodin, S / Prasad, V / Qi, F Z / Qi, H / Qi, H R / Qi, M / Qi, T Y / Qian, S / Qian, W B / Qiao, C F / Qin, J J / Qin, L Q / Qin, X P / Qin, X S / Qin, Z H / Qiu, J F / Qu, S Q / Redmer, C F / Ren, K J / Rivetti, A / Rodin, V / Rolo, M / Rong, G / Rosner, Ch / Ruan, S N / Salone, N / Sarantsev, A / Schelhaas, Y / Schoenning, K / Scodeggio, M / Shan, K Y / Shan, W / Shan, X Y / Shangguan, J F / Shao, L G / Shao, M / Shen, C P / Shen, H F / Shen, W H / Shen, X Y / Shi, B A / Shi, H C / Shi, J L / Shi, J Y / Shi, Q Q / Shi, R S / Shi, X / Song, J J / Song, T Z / Song, W M / Song, Y J / Song, Y X / Sosio, S / Spataro, S / Stieler, F / Su, Y J / Sun, G B / Sun, G X / Sun, H / Sun, H K / Sun, J F / Sun, K / Sun, L / Sun, S S / Sun, T / Sun, W Y / Sun, Y / Sun, Y J / Sun, Y Z / Sun, Z T / Tan, Y X / Tang, C J / Tang, G Y / Tang, J / Tang, Y A / Tao, L Y / Tao, Q T / Tat, M / Teng, J X / Thoren, V / Tian, W H / Tian, Y / Tian, Z F / Uman, I / Wang, S J / Wang, B / Wang, B L / Wang, Bo / Wang, C W / Wang, D Y / Wang, F / Wang, H J / Wang, H P / Wang, J P / Wang, K / Wang, L L / Wang, M / Wang, Meng / Wang, S / Wang, T / Wang, T J / Wang, W / Wang, W P / Wang, X / Wang, X F / Wang, X J / Wang, X L / Wang, Y / Wang, Y D / Wang, Y F / Wang, Y H / Wang, Y N / Wang, Y Q / Wang, Yaqian / Wang, Yi / Wang, Z / Wang, Z L / Wang, Z Y / Wang, Ziyi / Wei, D / Wei, D H / Weidner, F / Wen, S P / Wenzel, C W / Wiedner, U / Wilkinson, G / Wolke, M / Wollenberg, L / Wu, C / Wu, J F / Wu, L H / Wu, L J / Wu, X / Wu, X H / Wu, Y / Wu, Y J / Wu, Z / Xia, L / Xian, X M / Xiang, T / Xiao, D / Xiao, G Y / Xiao, S Y / Xiao, Y L / Xiao, Z J / Xie, C / Xie, X H / Xie, Y / Xie, Y G / Xie, Y H / Xie, Z P / Xing, T Y / Xu, C F / Xu, C J / Xu, G F / Xu, H Y / Xu, Q J / Xu, Q N / Xu, W / Xu, W L / Xu, X P / Xu, Y C / Xu, Z P / Xu, Z S / Yan, F / Yan, L / Yan, W B / Yan, W C / Yan, X Q / Yang, H J / Yang, H L / Yang, H X / Yang, Tao / Yang, Y / Yang, Y F / Yang, Y X / Yang, Yifan / Yang, Z W / Yao, Z P / Ye, M / Ye, M H / Yin, J H / You, Z Y / Yu, B X / Yu, C X / Yu, G / Yu, J S / Yu, T / Yu, X D / Yuan, C Z / Yuan, L / Yuan, S C / Yuan, X Q / Yuan, Y / Yuan, Z Y / Yue, C X / Zafar, A A / Zeng, F R / Zeng, X / Zeng, Y / Zeng, Y J / Zhai, X Y / Zhai, Y C / Zhan, Y H / Zhang, A Q / Zhang, B L / Zhang, B X / Zhang, D H / Zhang, G Y / Zhang, H / Zhang, H H / Zhang, H Q / Zhang, H Y / Zhang, J / Zhang, J J / Zhang, J L / Zhang, J Q / Zhang, J W / Zhang, J X / Zhang, J Y / Zhang, J Z / Zhang, Jianyu / Zhang, Jiawei / Zhang, L M / Zhang, L Q / Zhang, Lei / Zhang, P / Zhang, Q Y / Zhang, Shuihan / Zhang, Shulei / Zhang, X D / Zhang, X M / Zhang, X Y / Zhang, Xuyan / Zhang, Y / Zhang, Y T / Zhang, Y H / Zhang, Yan / Zhang, Yao / Zhang, Z H / Zhang, Z L / Zhang, Z Y / Zhao, G / Zhao, J / Zhao, J Y / Zhao, J Z / Zhao, Lei / Zhao, Ling / Zhao, M G / Zhao, S J / Zhao, Y B / Zhao, Y X / Zhao, Z G / Zhemchugov, A / Zheng, B / Zheng, J P / Zheng, W J / Zheng, Y H / Zhong, B / Zhong, X / Zhou, H / Zhou, L P / Zhou, X / Zhou, X K / Zhou, X R / Zhou, X Y / Zhou, Y Z / Zhu, J / Zhu, K / Zhu, K J / Zhu, L / Zhu, L X / Zhu, S H / Zhu, S Q / Zhu, T J / Zhu, W J / Zhu, Y C / Zhu, Z A / Zou, J H / Zu, J

    Physical review letters

    2024  Volume 132, Issue 3, Page(s) 31801

    Abstract: Based on 4.4  fb^{-1} of e^{+}e^{-} annihilation data collected at the center-of-mass energies between 4.60 and 4.70 GeV with the BESIII detector at the BEPCII collider, the pure W-boson-exchange decay Λ_{c}^{+}→Ξ^{0}K^{+} is studied with a full angular ... ...

    Abstract Based on 4.4  fb^{-1} of e^{+}e^{-} annihilation data collected at the center-of-mass energies between 4.60 and 4.70 GeV with the BESIII detector at the BEPCII collider, the pure W-boson-exchange decay Λ_{c}^{+}→Ξ^{0}K^{+} is studied with a full angular analysis. The corresponding decay asymmetry is measured for the first time to be α_{Ξ^{0}K^{+}}=0.01±0.16(stat)±0.03(syst). This result reflects the noninterference effect between the S- and P-wave amplitudes. The phase shift between S- and P-wave amplitudes has two solutions, which are δ_{p}-δ_{s}=-1.55±0.25(stat)±0.05(syst)  rad or 1.59±0.25(stat)±0.05(syst)  rad.
    Language English
    Publishing date 2024-01-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.031801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Observation of D_{s}^{+}→η^{'}μ^{+}ν_{μ}, Precision Test of Lepton Flavor Universality with D_{s}^{+}→η^{(')}l^{+}ν_{l}, and First Measurements of D_{s}^{+}→η^{(')}μ^{+}ν_{μ} Decay Dynamics.

    Ablikim, M / Achasov, M N / Adlarson, P / Aliberti, R / Amoroso, A / An, M R / An, Q / Bai, Y / Bakina, O / Balossino, I / Ban, Y / Batozskaya, V / Begzsuren, K / Berger, N / Berlowski, M / Bertani, M / Bettoni, D / Bianchi, F / Bianco, E /
    Bloms, J / Bortone, A / Boyko, I / Briere, R A / Brueggemann, A / Cai, H / Cai, X / Calcaterra, A / Cao, G F / Cao, N / Cetin, S A / Chang, J F / Chang, T T / Chang, W L / Che, G R / Chelkov, G / Chen, C / Chen, Chao / Chen, G / Chen, H S / Chen, M L / Chen, S J / Chen, S M / Chen, T / Chen, X R / Chen, X T / Chen, Y B / Chen, Y Q / Chen, Z J / Cheng, W S / Choi, S K / Chu, X / Cibinetto, G / Coen, S C / Cossio, F / Cui, J J / Dai, H L / Dai, J P / Dbeyssi, A / de Boer, R E / Dedovich, D / Deng, Z Y / Denig, A / Denysenko, I / Destefanis, M / De Mori, F / Ding, B / Ding, X X / Ding, Y / Dong, J / Dong, L Y / Dong, M Y / Dong, X / Du, S X / Duan, Z H / Egorov, P / Fan, Y L / Fang, J / Fang, S S / Fang, W X / Fang, Y / Farinelli, R / Fava, L / Feldbauer, F / Felici, G / Feng, C Q / Feng, J H / Fischer, K / Fritsch, M / Fritzsch, C / Fu, C D / Fu, Y W / Gao, H / Gao, Y N / Gao, Yang / Garbolino, S / Garzia, I / Ge, P T / Ge, Z W / Geng, C / Gersabeck, E M / Gilman, A / Goetzen, K / Gong, L / Gong, W X / Gradl, W / Gramigna, S / Greco, M / Gu, M H / Gu, Y T / Guan, C Y / Guan, Z L / Guo, A Q / Guo, L B / Guo, R P / Guo, Y P / Guskov, A / Hou, X T / Han, W Y / Hao, X Q / Harris, F A / He, K K / He, K L / Heinsius, F H / Heinz, C H / Heng, Y K / Herold, C / Holtmann, T / Hong, P C / Hou, G Y / Hou, Y R / Hou, Z L / Hu, H M / Hu, J F / Hu, T / Hu, Y / Huang, G S / Huang, K X / Huang, L Q / Huang, X T / Huang, Y P / Hussain, T / Hüsken, N / Imoehl, W / Irshad, M / Jackson, J / Jaeger, S / Janchiv, S / Jeong, J H / Ji, Q / Ji, Q P / Ji, X B / Ji, X L / Ji, Y Y / Jia, Z K / Jiang, P C / Jiang, S S / Jiang, T J / Jiang, X S / Jiang, Y / Jiao, J B / Jiao, Z / Jin, S / Jin, Y / Jing, M Q / Johansson, T / Kui, X / Kabana, S / Kalantar-Nayestanaki, N / Kang, X L / Kang, X S / Kappert, R / Kavatsyuk, M / Ke, B C / Khoukaz, A / Kiuchi, R / Kliemt, R / Koch, L / Kolcu, O B / Kopf, B / Kuessner, M / Kupsc, A / Kühn, W / Lane, J J / Lange, J S / Larin, P / Lavania, A / Lavezzi, L / Lei, T T / Lei, Z H / Leithoff, H / Lellmann, M / Lenz, T / Li, C / Li, C H / Li, Cheng / Li, D M / Li, F / Li, G / Li, H / Li, H B / Li, H J / Li, H N / Li, Hui / Li, J R / Li, J S / Li, J W / Li, Ke / Li, L J / Li, L K / Li, Lei / Li, M H / Li, P R / Li, S X / Li, T / Li, W D / Li, W G / Li, X H / Li, X L / Li, Xiaoyu / Li, Y G / Li, Z J / Li, Z X / Li, Z Y / Liang, C / Liang, H / Liang, Y F / Liang, Y T / Liao, G R / Liao, L Z / Libby, J / Limphirat, A / Lin, D X / Lin, T / Liu, B J / Liu, B X / Liu, C / Liu, C X / Liu, D / Liu, F H / Liu, Fang / Liu, Feng / Liu, G M / Liu, H / Liu, H B / Liu, H M / Liu, Huanhuan / Liu, Huihui / Liu, J B / Liu, J L / Liu, J Y / Liu, K / Liu, K Y / Liu, Ke / Liu, L / Liu, L C / Liu, Lu / Liu, M H / Liu, P L / Liu, Q / Liu, S B / Liu, T / Liu, W K / Liu, W M / Liu, X / Liu, Y / Liu, Y B / Liu, Z A / Liu, Z Q / Lou, X C / Lu, F X / Lu, H J / Lu, J G / Lu, X L / Lu, Y / Lu, Y P / Lu, Z H / Luo, C L / Luo, M X / Luo, T / Luo, X L / Lyu, X R / Lyu, Y F / Ma, F C / Ma, H L / Ma, J L / Ma, L L / Ma, M M / Ma, Q M / Ma, R Q / Ma, R T / Ma, X Y / Ma, Y / Maas, F E / Maggiora, M / Maldaner, S / Malde, S / Mangoni, A / Mao, Y J / Mao, Z P / Marcello, S / Meng, Z X / Messchendorp, J G / Mezzadri, G / Miao, H / Min, T J / Mitchell, R E / Mo, X H / Muchnoi, N Yu / Nefedov, Y / Nerling, F / Nikolaev, I B / Ning, Z / Nisar, S / Niu, Y / Olsen, S L / Ouyang, Q / Pacetti, S / Pan, X / Pan, Y / Pathak, A / Pei, Y P / Pelizaeus, M / Peng, H P / Peters, K / Ping, J L / Ping, R G / Plura, S / Pogodin, S / Prasad, V / Qi, F Z / Qi, H / Qi, H R / Qi, M / Qi, T Y / Qian, S / Qian, W B / Qiao, C F / Qin, J J / Qin, L Q / Qin, X P / Qin, X S / Qin, Z H / Qiu, J F / Qu, S Q / Redmer, C F / Ren, K J / Rivetti, A / Rodin, V / Rolo, M / Rong, G / Rosner, Ch / Ruan, S N / Salone, N / Sarantsev, A / Schelhaas, Y / Schoenning, K / Scodeggio, M / Shan, K Y / Shan, W / Shan, X Y / Shangguan, J F / Shao, L G / Shao, M / Shen, C P / Shen, H F / Shen, W H / Shen, X Y / Shi, B A / Shi, H C / Shi, J L / Shi, J Y / Shi, Q Q / Shi, R S / Shi, X / Song, J J / Song, T Z / Song, W M / Song, Y J / Song, Y X / Sosio, S / Spataro, S / Stieler, F / Su, Y J / Sun, G B / Sun, G X / Sun, H / Sun, H K / Sun, J F / Sun, K / Sun, L / Sun, S S / Sun, T / Sun, W Y / Sun, Y / Sun, Y J / Sun, Y Z / Sun, Z T / Tan, Y X / Tang, C J / Tang, G Y / Tang, J / Tang, Y A / Tao, L Y / Tao, Q T / Tat, M / Teng, J X / Thoren, V / Tian, W H / Tian, Y / Tian, Z F / Uman, I / Wang, B / Wang, B L / Wang, Bo / Wang, C W / Wang, D Y / Wang, F / Wang, H J / Wang, H P / Wang, K / Wang, L L / Wang, M / Wang, Meng / Wang, S / Wang, T / Wang, T J / Wang, W / Wang, W H / Wang, W P / Wang, X / Wang, X F / Wang, X J / Wang, X L / Wang, Y / Wang, Y D / Wang, Y F / Wang, Y H / Wang, Y N / Wang, Y Q / Wang, Yaqian / Wang, Yi / Wang, Z / Wang, Z L / Wang, Z Y / Wang, Ziyi / Wei, D / Wei, D H / Weidner, F / Wen, S P / Wenzel, C W / Wiedner, U / Wilkinson, G / Wolke, M / Wollenberg, L / Wu, C / Wu, J F / Wu, L H / Wu, L J / Wu, X / Wu, X H / Wu, Y / Wu, Y J / Wu, Z / Xia, L / Xian, X M / Xiang, T / Xiao, D / Xiao, G Y / Xiao, H / Xiao, S Y / Xiao, Y L / Xiao, Z J / Xie, C / Xie, X H / Xie, Y / Xie, Y G / Xie, Y H / Xie, Z P / Xing, T Y / Xu, C F / Xu, C J / Xu, G F / Xu, H Y / Xu, Q J / Xu, W L / Xu, X P / Xu, Y C / Xu, Z P / Yan, F / Yan, L / Yan, W B / Yan, W C / Yan, X Q / Yang, H J / Yang, H L / Yang, H X / Yang, Tao / Yang, Y / Yang, Y F / Yang, Y X / Yang, Yifan / Yang, Z W / Ye, M / Ye, M H / Yin, J H / You, Z Y / Yu, B X / Yu, C X / Yu, G / Yu, T / Yu, X D / Yuan, C Z / Yuan, L / Yuan, S C / Yuan, X Q / Yuan, Y / Yuan, Z Y / Yue, C X / Zafar, A A / Zeng, F R / Zeng, X / Zeng, Y / Zeng, Y J / Zhai, X Y / Zhan, Y H / Zhang, A Q / Zhang, B L / Zhang, B X / Zhang, D H / Zhang, G Y / Zhang, H / Zhang, H H / Zhang, H Q / Zhang, H Y / Zhang, J J / Zhang, J L / Zhang, J Q / Zhang, J W / Zhang, J X / Zhang, J Y / Zhang, J Z / Zhang, Jiawei / Zhang, L M / Zhang, L Q / Zhang, Lei / Zhang, P / Zhang, Q Y / Zhang, Shuihan / Zhang, Shulei / Zhang, X D / Zhang, X M / Zhang, X Y / Zhang, Y / Zhang, Y T / Zhang, Y H / Zhang, Yan / Zhang, Yao / Zhang, Z H / Zhang, Z L / Zhang, Z Y / Zhao, G / Zhao, J / Zhao, J Y / Zhao, J Z / Zhao, Lei / Zhao, Ling / Zhao, M G / Zhao, S J / Zhao, Y B / Zhao, Y X / Zhao, Z G / Zhemchugov, A / Zheng, B / Zheng, J P / Zheng, W J / Zheng, Y H / Zhong, B / Zhong, X / Zhou, H / Zhou, L P / Zhou, X / Zhou, X K / Zhou, X R / Zhou, X Y / Zhou, Y Z / Zhu, J / Zhu, K / Zhu, K J / Zhu, L / Zhu, L X / Zhu, S H / Zhu, S Q / Zhu, T J / Zhu, W J / Zhu, Y C / Zhu, Z A / Zou, J H / Zu, J

    Physical review letters

    2024  Volume 132, Issue 9, Page(s) 91802

    Abstract: By analyzing 7.33  fb^{-1} of e^{+}e^{-} annihilation data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we report the observation of the semileptonic decay D_{s}^{+}→η^{'}μ^{+}ν_{μ}, with a statistical ... ...

    Abstract By analyzing 7.33  fb^{-1} of e^{+}e^{-} annihilation data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we report the observation of the semileptonic decay D_{s}^{+}→η^{'}μ^{+}ν_{μ}, with a statistical significance larger than 10σ, and the measurements of the D_{s}^{+}→ημ^{+}ν_{μ} and D_{s}^{+}→η^{'}μ^{+}ν_{μ} decay dynamics for the first time. The branching fractions of D_{s}^{+}→ημ^{+}ν_{μ} and D_{s}^{+}→η^{'}μ^{+}ν_{μ} are determined to be (2.235±0.051_{stat}±0.052_{syst})% and (0.801±0.055_{stat}±0.028_{syst})%, respectively, with precision improved by factors of 6.0 and 6.6 compared to the previous best measurements. Combined with the results for the decays D_{s}^{+}→ηe^{+}ν_{e} and D_{s}^{+}→η^{'}e^{+}ν_{e}, the ratios of the decay widths are examined both inclusively and in several ℓ^{+}ν_{ℓ} four-momentum transfer ranges. No evidence for lepton flavor universality violation is found within the current statistics. The products of the hadronic form factors f_{+,0}^{η^{(')}}(0) and the c→s Cabibbo-Kobayashi-Maskawa matrix element |V_{cs}| are determined. The results based on the two-parameter series expansion are f_{+,0}^{η}(0)|V_{cs}|=0.452±0.010_{stat}±0.007_{syst} and f_{+,0}^{η^{'}}(0)|V_{cs}|=0.504±0.037_{stat}±0.012_{syst}, which help to constrain present models on f_{+,0}^{η^{(')}}(0). The forward-backward asymmetries are determined to be ⟨A_{FB}^{η}⟩=-0.059±0.031_{stat}±0.005_{syst} and ⟨A_{FB}^{η^{'}}⟩=-0.064±0.079_{stat}±0.006_{syst} for the first time, which are consistent with the theoretical calculation.
    Language English
    Publishing date 2024-03-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.091802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Determination of the Σ^{+} Timelike Electromagnetic Form Factors.

    Ablikim, M / Achasov, M N / Adlarson, P / Ai, X C / Aliberti, R / Amoroso, A / An, M R / An, Q / Bai, Y / Bakina, O / Balossino, I / Ban, Y / Batozskaya, V / Begzsuren, K / Berger, N / Berlowski, M / Bertani, M / Bettoni, D / Bianchi, F /
    Bianco, E / Bortone, A / Boyko, I / Briere, R A / Brueggemann, A / Cai, H / Cai, X / Calcaterra, A / Cao, G F / Cao, N / Cetin, S A / Chang, J F / Chang, T T / Chang, W L / Che, G R / Chelkov, G / Chen, C / Chen, Chao / Chen, G / Chen, H S / Chen, M L / Chen, S J / Chen, S M / Chen, T / Chen, X R / Chen, X T / Chen, Y B / Chen, Y Q / Chen, Z J / Cheng, W S / Choi, S K / Chu, X / Cibinetto, G / Coen, S C / Cossio, F / Cui, J J / Dai, H L / Dai, J P / Dbeyssi, A / de Boer, R E / Dedovich, D / Deng, Z Y / Denig, A / Denysenko, I / Destefanis, M / De Mori, F / Ding, B / Ding, X X / Ding, Y / Dong, J / Dong, L Y / Dong, M Y / Dong, X / Du, M C / Du, S X / Duan, Z H / Egorov, P / Fan, Y H Y / Fan, Y L / Fang, J / Fang, S S / Fang, W X / Fang, Y / Farinelli, R / Fava, L / Feldbauer, F / Felici, G / Feng, C Q / Feng, J H / Fischer, K / Fritsch, M / Fritzsch, C / Fu, C D / Fu, J L / Fu, Y W / Gao, H / Gao, Y N / Gao, Yang / Garbolino, S / Garzia, I / Ge, P T / Ge, Z W / Geng, C / Gersabeck, E M / Gilman, A / Goetzen, K / Gong, L / Gong, W X / Gradl, W / Gramigna, S / Greco, M / Gu, M H / Gu, Y T / Guan, C Y / Guan, Z L / Guo, A Q / Guo, L B / Guo, M J / Guo, R P / Guo, Y P / Guskov, A / Han, T T / Han, W Y / Hao, X Q / Harris, F A / He, K K / He, K L / Heinsius, F H H / Heinz, C H / Heng, Y K / Herold, C / Holtmann, T / Hong, P C / Hou, G Y / Hou, X T / Hou, Y R / Hou, Z L / Hu, H M / Hu, J F / Hu, T / Hu, Y / Huang, G S / Huang, K X / Huang, L Q / Huang, X T / Huang, Y P / Hussain, T / Hüsken, N / Imoehl, W / In der Wiesche, N / Jackson, J / Jaeger, S / Janchiv, S / Jeong, J H / Ji, Q / Ji, Q P / Ji, X B / Ji, X L / Ji, Y Y / Jia, X Q / Jia, Z K / Jiang, H J / Jiang, P C / Jiang, S S / Jiang, T J / Jiang, X S / Jiang, Y / Jiao, J B / Jiao, Z / Jin, S / Jin, Y / Jing, M Q / Johansson, T / K, X / Kabana, S / Kalantar-Nayestanaki, N / Kang, X L / Kang, X S / Kavatsyuk, M / Ke, B C / Khoukaz, A / Kiuchi, R / Kliemt, R / Kolcu, O B / Kopf, B / Kuessner, M / Kupsc, A / Kühn, W / Lane, J J / Larin, P / Lavania, A / Lavezzi, L / Lei, T T / Lei, Z H / Leithoff, H / Lellmann, M / Lenz, T / Li, C / Li, C H / Li, Cheng / Li, D M / Li, F / Li, G / Li, H / Li, H B / Li, H J / Li, H N / Li, Hui / Li, J R / Li, J S / Li, J W / Li, K L / Li, Ke / Li, L J / Li, L K / Li, Lei / Li, M H / Li, P R / Li, Q X / Li, S X / Li, T / Li, W D / Li, W G / Li, X H / Li, X L / Li, Xiaoyu / Li, Y G / Li, Z J / Li, Z X / Liang, C / Liang, H / Liang, Y F / Liang, Y T / Liao, G R / Liao, L Z / Liao, Y P / Libby, J / Limphirat, A / Lin, D X / Lin, T / Liu, B J / Liu, B X / Liu, C / Liu, C X / Liu, F H / Liu, Fang / Liu, Feng / Liu, G M / Liu, H / Liu, H B / Liu, H M / Liu, Huanhuan / Liu, Huihui / Liu, J B / Liu, J L / Liu, J Y / Liu, K / Liu, K Y / Liu, Ke / Liu, L / Liu, L C / Liu, Lu / Liu, M H / Liu, P L / Liu, Q / Liu, S B / Liu, T / Liu, W K / Liu, W M / Liu, X / Liu, Y / Liu, Y B / Liu, Z A / Liu, Z Q / Lou, X C / Lu, F X / Lu, H J / Lu, J G / Lu, X L / Lu, Y / Lu, Y P / Lu, Z H / Luo, C L / Luo, M X / Luo, T / Luo, X L / Lyu, X R / Lyu, Y F / Ma, F C / Ma, H L / Ma, J L / Ma, L L / Ma, M M / Ma, Q M / Ma, R Q / Ma, R T / Ma, X Y / Ma, Y / Ma, Y M / Maas, F E / Maggiora, M / Malde, S / Malik, Q A / Mangoni, A / Mao, Y J / Mao, Z P / Marcello, S / Meng, Z X / Messchendorp, J G / Mezzadri, G / Miao, H / Min, T J / Mitchell, R E / Mo, X H / Muchnoi, N Yu / Muskalla, J / Nefedov, Y / Nerling, F / Nikolaev, I B / Ning, Z / Nisar, S / Niu, W D / Niu, Y / Olsen, S L / Ouyang, Q / Pacetti, S / Pan, X / Pan, Y / Pathak, A / Patteri, P / Pei, Y P / Pelizaeus, M / Peng, H P / Peters, K / Ping, J L / Ping, R G / Plura, S / Pogodin, S / Prasad, V / Qi, F Z / Qi, H / Qi, H R / Qi, M / Qi, T Y / Qian, S / Qian, W B / Qiao, C F / Qin, J J / Qin, L Q / Qin, X P / Qin, X S / Qin, Z H / Qiu, J F / Qu, S Q / Redmer, C F / Ren, K J / Rivetti, A / Rolo, M / Rong, G / Rosner, Ch / Ruan, S N / Salone, N / Sarantsev, A / Schelhaas, Y / Schoenning, K / Scodeggio, M / Shan, K Y / Shan, W / Shan, X Y / Shangguan, J F / Shao, L G / Shao, M / Shen, C P / Shen, H F / Shen, W H / Shen, X Y / Shi, B A / Shi, H C / Shi, J L / Shi, J Y / Shi, Q Q / Shi, R S / Shi, X / Song, J J / Song, T Z / Song, W M / Song, Y J / Song, Y X / Sosio, S / Spataro, S / Stieler, F / Su, Y J / Sun, G B / Sun, G X / Sun, H / Sun, H K / Sun, J F / Sun, K / Sun, L / Sun, S S / Sun, T / Sun, W Y / Sun, Y / Sun, Y J / Sun, Y Z / Sun, Z T / Tan, Y X / Tang, C J / Tang, G Y / Tang, J / Tang, Y A / Tao, L Y / Tao, Q T / Tat, M / Teng, J X / Thoren, V / Tian, W H / Tian, Y / Tian, Z F / Uman, I / Wang, S J / Wang, B / Wang, B L / Wang, Bo / Wang, C W / Wang, D Y / Wang, F / Wang, H J / Wang, H P / Wang, J P / Wang, K / Wang, L L / Wang, M / Wang, Meng / Wang, S / Wang, T / Wang, T J / Wang, W / Wang, W P / Wang, X / Wang, X F / Wang, X J / Wang, X L / Wang, Y / Wang, Y D / Wang, Y F / Wang, Y H / Wang, Y N / Wang, Y Q / Wang, Yaqian / Wang, Yi / Wang, Z / Wang, Z L / Wang, Z Y / Wang, Ziyi / Wei, D / Wei, D H / Weidner, F / Wen, S P / Wenzel, C W / Wiedner, U / Wilkinson, G / Wolke, M / Wollenberg, L / Wu, C / Wu, J F / Wu, L H / Wu, L J / Wu, X / Wu, X H / Wu, Y / Wu, Y H / Wu, Y J / Wu, Z / Xia, L / Xian, X M / Xiang, T / Xiao, D / Xiao, G Y / Xiao, S Y / Xiao, Y L / Xiao, Z J / Xie, C / Xie, X H / Xie, Y / Xie, Y G / Xie, Y H / Xie, Z P / Xing, T Y / Xu, C F / Xu, C J / Xu, G F / Xu, H Y / Xu, Q J / Xu, Q N / Xu, W / Xu, W L / Xu, X P / Xu, Y C / Xu, Y / Xu, Z P / Xu, Z S / Yan, F / Yan, L / Yan, W B / Yan, W C / Yan, X Q / Yang, H J / Yang, H L / Yang, H X / Yang, Tao / Yang, Y / Yang, Y F / Yang, Y X / Yang, Yifan / Yang, Z W / Yao, Z P / Ye, M / Ye, M H / Yin, J H / You, Z Y / Yu, B X / Yu, C X / Yu, G / Yu, J S / Yu, T / Yu, X D / Yuan, C Z / Yuan, L / Yuan, S C / Yuan, X Q / Yuan, Y / Yuan, Z Y / Yue, C X / Zafar, A A / Zeng, F R / Zeng, X / Zeng, Y / Zeng, Y J / Zhai, X Y / Zhai, Y C / Zhan, Y H / Zhang, A Q / Zhang, B L / Zhang, B X / Zhang, D H / Zhang, G Y / Zhang, H / Zhang, H H / Zhang, H Q / Zhang, H Y / Zhang, J / Zhang, J J / Zhang, J L / Zhang, J Q / Zhang, J W / Zhang, J X / Zhang, J Y / Zhang, J Z / Zhang, Jianyu / Zhang, Jiawei / Zhang, L M / Zhang, L Q / Zhang, Lei / Zhang, P / Zhang, Q Y / Zhang, Shuihan / Zhang, Shulei / Zhang, X D / Zhang, X M / Zhang, X Y / Zhang, Xuyan / Zhang, Y / Zhang, Y T / Zhang, Y H / Zhang, Yan / Zhang, Yao / Zhang, Z H / Zhang, Z L / Zhang, Z Y / Zhao, G / Zhao, J / Zhao, J Y / Zhao, J Z / Zhao, Lei / Zhao, Ling / Zhao, M G / Zhao, S J / Zhao, Y B / Zhao, Y X / Zhao, Z G / Zhemchugov, A / Zheng, B / Zheng, J P / Zheng, W J / Zheng, Y H / Zhong, B / Zhong, X / Zhou, H / Zhou, L P / Zhou, X / Zhou, X K / Zhou, X R / Zhou, X Y / Zhou, Y Z / Zhu, J / Zhu, K / Zhu, K J / Zhu, L / Zhu, L X / Zhu, S H / Zhu, S Q / Zhu, T J / Zhu, W J / Zhu, Y C / Zhu, Z A / Zou, J H / Zu, J

    Physical review letters

    2024  Volume 132, Issue 8, Page(s) 81904

    Abstract: Based on data samples collected with the BESIII detector at the BEPCII collider, the process e^{+}e^{-}→Σ^{+}Σ[over ¯]^{-} is studied at center-of-mass energies sqrt[s]=2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the ...

    Abstract Based on data samples collected with the BESIII detector at the BEPCII collider, the process e^{+}e^{-}→Σ^{+}Σ[over ¯]^{-} is studied at center-of-mass energies sqrt[s]=2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the final state particles, both the relative magnitude and phase information of the Σ^{+} electromagnetic form factors in the timelike region are extracted. The relative phase between the electric and magnetic form factors is determined to be sinΔΦ=-0.67±0.29(stat)±0.18(syst) at sqrt[s]=2.3960  GeV, ΔΦ=55°±19°(stat)±14°(syst) at sqrt[s]=2.6454  GeV, and 78°±22°(stat)±9°(syst) at sqrt[s]=2.9000  GeV. For the first time, the phase of the hyperon electromagnetic form factors is explored in a wide range of four-momentum transfer. The evolution of the phase along with four-momentum transfer is an important input for understanding its asymptotic behavior and the dynamics of baryons.
    Language English
    Publishing date 2024-03-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.081904
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Investigation of the ΔI=1/2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in Ξ^{-} Decays.

    Ablikim, M / Achasov, M N / Adlarson, P / Ai, X C / Aliberti, R / Amoroso, A / An, M R / An, Q / Bai, Y / Bakina, O / Balossino, I / Ban, Y / Batozskaya, V / Begzsuren, K / Berger, N / Berlowski, M / Bertani, M / Bettoni, D / Bianchi, F /
    Bianco, E / Bortone, A / Boyko, I / Briere, R A / Brueggemann, A / Cai, H / Cai, X / Calcaterra, A / Cao, G F / Cao, N / Cetin, S A / Chang, J F / Chang, T T / Chang, W L / Che, G R / Chelkov, G / Chen, C / Chen, Chao / Chen, G / Chen, H S / Chen, M L / Chen, S J / Chen, S L / Chen, S M / Chen, T / Chen, X R / Chen, X T / Chen, Y B / Chen, Y Q / Chen, Z J / Cheng, W S / Choi, S K / Chu, X / Cibinetto, G / Coen, S C / Cossio, F / Cui, J J / Dai, H L / Dai, J P / Dbeyssi, A / de Boer, R E / Dedovich, D / Deng, Z Y / Denig, A / Denysenko, I / Destefanis, M / De Mori, F / Ding, B / Ding, X X / Ding, Y / Dong, J / Dong, L Y / Dong, M Y / Dong, X / Du, M C / Du, S X / Duan, Z H / Egorov, P / Fan, Y H / Fang, J / Fang, S S / Fang, W X / Fang, Y / Farinelli, R / Fava, L / Feldbauer, F / Felici, G / Feng, C Q / Feng, J H / Fischer, K / Fritsch, M / Fu, C D / Fu, J L / Fu, Y W / Gao, H / Gao, Y N / Gao, Yang / Garbolino, S / Garzia, I / Ge, P T / Ge, Z W / Geng, C / Gersabeck, E M / Gilman, A / Goetzen, K / Gong, L / Gong, W X / Gradl, W / Gramigna, S / Greco, M / Gu, M H / Gu, Y T / Guan, C Y / Guan, Z L / Guo, A Q / Guo, L B / Guo, M J / Guo, R P / Guo, Y P / Guskov, A / Han, T T / Han, W Y / Hao, X Q / Harris, F A / He, K K / He, K L / Heinsius, F H H / Heinz, C H / Heng, Y K / Herold, C / Holtmann, T / Hong, P C / Hou, G Y / Hou, X T / Hou, Y R / Hou, Z L / Hu, H M / Hu, J F / Hu, T / Hu, Y / Huang, G S / Huang, K X / Huang, L Q / Huang, X T / Huang, Y P / Hussain, T / Hüsken, N / In der Wiesche, N / Irshad, M / Jackson, J / Jaeger, S / Janchiv, S / Jeong, J H / Ji, Q / Ji, Q P / Ji, X B / Ji, X L / Ji, Y Y / Jia, X Q / Jia, Z K / Jiang, H J / Jiang, P C / Jiang, S S / Jiang, T J / Jiang, X S / Jiang, Y / Jiao, J B / Jiao, Z / Jin, S / Jin, Y / Jing, M Q / Johansson, T / K, X / Kabana, S / Kalantar-Nayestanaki, N / Kang, X L / Kang, X S / Kavatsyuk, M / Ke, B C / Khoukaz, A / Kiuchi, R / Kliemt, R / Kolcu, O B / Kopf, B / Kuessner, M / Kupsc, A / Kühn, W / Lane, J J / Larin, P / Lavania, A / Lavezzi, L / Lei, T T / Lei, Z H / Leithoff, H / Lellmann, M / Lenz, T / Li, C / Li, C H / Li, Cheng / Li, D M / Li, F / Li, G / Li, H / Li, H B / Li, H J / Li, H N / Li, Hui / Li, J R / Li, J S / Li, J W / Li, K L / Li, Ke / Li, L J / Li, L K / Li, Lei / Li, M H / Li, P R / Li, Q X / Li, S X / Li, T / Li, W D / Li, W G / Li, X H / Li, X L / Li, Xiaoyu / Li, Y G / Li, Z J / Li, Z X / Liang, C / Liang, H / Liang, Y F / Liang, Y T / Liao, G R / Liao, L Z / Liao, Y P / Libby, J / Limphirat, A / Lin, D X / Lin, T / Liu, B J / Liu, B X / Liu, C / Liu, C X / Liu, F H / Liu, Fang / Liu, Feng / Liu, G M / Liu, H / Liu, H B / Liu, H M / Liu, Huanhuan / Liu, Huihui / Liu, J B / Liu, J L / Liu, J Y / Liu, K / Liu, K Y / Liu, Ke / Liu, L / Liu, L C / Liu, Lu / Liu, M H / Liu, P L / Liu, Q / Liu, S B / Liu, T / Liu, W K / Liu, W M / Liu, X / Liu, Y / Liu, Y B / Liu, Z A / Liu, Z Q / Lou, X C / Lu, F X / Lu, H J / Lu, J G / Lu, X L / Lu, Y / Lu, Y P / Lu, Z H / Luo, C L / Luo, M X / Luo, T / Luo, X L / Lyu, X R / Lyu, Y F / Ma, F C / Ma, H L / Ma, J L / Ma, L L / Ma, M M / Ma, Q M / Ma, R Q / Ma, R T / Ma, X Y / Ma, Y / Ma, Y M / Maas, F E / Maggiora, M / Malde, S / Malik, Q A / Mangoni, A / Mao, Y J / Mao, Z P / Marcello, S / Meng, Z X / Messchendorp, J G / Mezzadri, G / Miao, H / Min, T J / Mitchell, R E / Mo, X H / Muchnoi, N Yu / Muskalla, J / Nefedov, Y / Nerling, F / Nikolaev, I B / Ning, Z / Nisar, S / Niu, Q L / Niu, W D / Niu, Y / Olsen, S L / Ouyang, Q / Pacetti, S / Pan, X / Pan, Y / Pathak, A / Patteri, P / Pei, Y P / Pelizaeus, M / Peng, H P / Peng, Y Y / Peters, K / Ping, J L / Ping, R G / Plura, S / Prasad, V / Qi, F Z / Qi, H / Qi, H R / Qi, M / Qi, T Y / Qian, S / Qian, W B / Qiao, C F / Qin, J J / Qin, L Q / Qin, X P / Qin, X S / Qin, Z H / Qiu, J F / Qu, S Q / Redmer, C F / Ren, K J / Rivetti, A / Rolo, M / Rong, G / Rosner, Ch / Ruan, S N / Salone, N / Sarantsev, A / Schelhaas, Y / Schoenning, K / Scodeggio, M / Shan, K Y / Shan, W / Shan, X Y / Shangguan, J F / Shao, L G / Shao, M / Shen, C P / Shen, H F / Shen, W H / Shen, X Y / Shi, B A / Shi, H C / Shi, J L / Shi, J Y / Shi, Q Q / Shi, R S / Shi, X / Song, J J / Song, T Z / Song, W M / Song, Y J / Song, Y X / Sosio, S / Spataro, S / Stieler, F / Su, Y J / Sun, G B / Sun, G X / Sun, H / Sun, H K / Sun, J F / Sun, K / Sun, L / Sun, S S / Sun, T / Sun, W Y / Sun, Y / Sun, Y J / Sun, Y Z / Sun, Z T / Tan, Y X / Tang, C J / Tang, G Y / Tang, J / Tang, Y A / Tao, L Y / Tao, Q T / Tat, M / Teng, J X / Thoren, V / Tian, W H / Tian, Y / Tian, Z F / Uman, I / Wang, S J / Wang, B / Wang, B L / Wang, Bo / Wang, C W / Wang, D Y / Wang, F / Wang, H J / Wang, H P / Wang, J P / Wang, K / Wang, L L / Wang, M / Wang, Meng / Wang, S / Wang, T / Wang, T J / Wang, W / Wang, W P / Wang, X / Wang, X F / Wang, X J / Wang, X L / Wang, Y / Wang, Y D / Wang, Y F / Wang, Y H / Wang, Y N / Wang, Y Q / Wang, Yaqian / Wang, Yi / Wang, Z / Wang, Z L / Wang, Z Y / Wang, Ziyi / Wei, D / Wei, D H / Weidner, F / Wen, S P / Wenzel, C W / Wiedner, U / Wilkinson, G / Wolke, M / Wollenberg, L / Wu, C / Wu, J F / Wu, L H / Wu, L J / Wu, X / Wu, X H / Wu, Y / Wu, Y H / Wu, Y J / Wu, Z / Xia, L / Xian, X M / Xiang, T / Xiao, D / Xiao, G Y / Xiao, S Y / Xiao, Y L / Xiao, Z J / Xie, C / Xie, X H / Xie, Y / Xie, Y G / Xie, Y H / Xie, Z P / Xing, T Y / Xu, C F / Xu, C J / Xu, G F / Xu, H Y / Xu, Q J / Xu, Q N / Xu, W / Xu, W L / Xu, X P / Xu, Y C / Xu, Z P / Xu, Z S / Yan, F / Yan, L / Yan, W B / Yan, W C / Yan, X Q / Yang, H J / Yang, H L / Yang, H X / Yang, Tao / Yang, Y / Yang, Y F / Yang, Y X / Yang, Yifan / Yang, Z W / Yao, Z P / Ye, M / Ye, M H / Yin, J H / You, Z Y / Yu, B X / Yu, C X / Yu, G / Yu, J S / Yu, T / Yu, X D / Yuan, C Z / Yuan, L / Yuan, S C / Yuan, X Q / Yuan, Y / Yuan, Z Y / Yue, C X / Zafar, A A / Zeng, F R / Zeng, X / Zeng, Y / Zeng, Y J / Zhai, X Y / Zhai, Y C / Zhan, Y H / Zhang, A Q / Zhang, B L / Zhang, B X / Zhang, D H / Zhang, G Y / Zhang, H / Zhang, H C / Zhang, H H / Zhang, H Q / Zhang, H Y / Zhang, J / Zhang, J J / Zhang, J L / Zhang, J Q / Zhang, J W / Zhang, J X / Zhang, J Y / Zhang, J Z / Zhang, Jianyu / Zhang, Jiawei / Zhang, L M / Zhang, L Q / Zhang, Lei / Zhang, P / Zhang, Q Y / Zhang, Shuihan / Zhang, Shulei / Zhang, X D / Zhang, X M / Zhang, X Y / Zhang, Xuyan / Zhang, Y / Zhang, Y T / Zhang, Y H / Zhang, Yan / Zhang, Yao / Zhang, Z H / Zhang, Z L / Zhang, Z Y / Zhao, G / Zhao, J / Zhao, J Y / Zhao, J Z / Zhao, Lei / Zhao, Ling / Zhao, M G / Zhao, S J / Zhao, Y B / Zhao, Y X / Zhao, Z G / Zhemchugov, A / Zheng, B / Zheng, J P / Zheng, W J / Zheng, Y H / Zhong, B / Zhong, X / Zhou, H / Zhou, L P / Zhou, X / Zhou, X K / Zhou, X R / Zhou, X Y / Zhou, Y Z / Zhu, J / Zhu, K / Zhu, K J / Zhu, L / Zhu, L X / Zhu, S H / Zhu, S Q / Zhu, T J / Zhu, W J / Zhu, Y C / Zhu, Z A / Zou, J H / Zu, J

    Physical review letters

    2024  Volume 132, Issue 10, Page(s) 101801

    Abstract: Using (10087±44)×10^{6}  J/ψ events collected with the BESIII detector, numerous Ξ^{-} and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ^{-}Ξ[over ¯]^{+}→Λ(pπ^{-})π^{-}Λ[over ¯](n[over ¯]π^{0})π^{+} and its charge- ... ...

    Abstract Using (10087±44)×10^{6}  J/ψ events collected with the BESIII detector, numerous Ξ^{-} and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ^{-}Ξ[over ¯]^{+}→Λ(pπ^{-})π^{-}Λ[over ¯](n[over ¯]π^{0})π^{+} and its charge-conjugate channel. The precisions of α_{Λ0} for Λ→nπ^{0} and α[over ¯]_{Λ0} for Λ[over ¯]→n[over ¯]π^{0} compared to world averages are improved by factors of 4 and 1.7, respectively. The ratio of decay asymmetry parameters of Λ→nπ^{0} to that of Λ→pπ^{-}, ⟨α_{Λ0}⟩/⟨α_{Λ-}⟩, is determined to be 0.873±0.012_{-0.010}^{+0.011}, where the first and the second uncertainties are statistical and systematic, respectively. The ratio is smaller than unity more than 5σ, which signifies the existence of the ΔI=3/2 transition in Λ for the first time. Besides, we test for CP symmetry in Ξ^{-}→Λπ^{-} and in Λ→nπ^{0} with the best precision to date.
    Language English
    Publishing date 2024-03-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.101801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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