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  1. Article ; Online: Backscattering of laser radiation on ultrarelativistic electrons in a transverse magnetic field: evidence of MeV-scale photon interference.

    Abakumova, E V / Achasov, M N / Berkaev, D E / Kaminsky, V V / Muchnoi, N Yu / Perevedentsev, E A / Pyata, E E / Shatunov, Yu M

    Physical review letters

    2013  Volume 110, Issue 14, Page(s) 140402

    Abstract: In this Letter we report an observation of interference effects in Compton scattering in the experiment held on the VEPP-2000 collider. Infrared laser radiation was scattered head-on the 990 MeV electrons inside the dipole magnet, where an electron orbit ...

    Abstract In this Letter we report an observation of interference effects in Compton scattering in the experiment held on the VEPP-2000 collider. Infrared laser radiation was scattered head-on the 990 MeV electrons inside the dipole magnet, where an electron orbit radius is about 140 cm. It was observed that the energy spectrum of backscattered photons, measured by a HPGe detector, differs from that defined by the Klein-Nishina cross section and scattering kinematics of free electrons. The explanation of the effect, proposed in terms of classical electrodynamics, is in agreement with QED calculations.
    Language English
    Publishing date 2013-04-05
    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.110.140402
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Measurement of the two-photon exchange contribution to the elastic e(±)p scattering cross sections at the VEPP-3 storage ring.

    Rachek, I A / Arrington, J / Dmitriev, V F / Gauzshtein, V V / Gerasimov, R E / Gramolin, A V / Holt, R J / Kaminskiy, V V / Lazarenko, B A / Mishnev, S I / Muchnoi, N Yu / Neufeld, V V / Nikolenko, D M / Sadykov, R Sh / Shestakov, Yu V / Stibunov, V N / Toporkov, D K / de Vries, H / Zevakov, S A /
    Zhilich, V N

    Physical review letters

    2015  Volume 114, Issue 6, Page(s) 62005

    Abstract: The ratio of the elastic e(+)p to e(-)p scattering cross sections has been measured precisely, allowing the determination of the two-photon exchange contribution to these processes. This neglected contribution is believed to be the cause of the ... ...

    Abstract The ratio of the elastic e(+)p to e(-)p scattering cross sections has been measured precisely, allowing the determination of the two-photon exchange contribution to these processes. This neglected contribution is believed to be the cause of the discrepancy between the Rosenbluth and polarization transfer methods of measuring the proton electromagnetic form factors. The experiment was performed at the VEPP-3 storage ring at beam energies of 1.6 and 1.0 GeV and at lepton scattering angles between 15° and 105°. The data obtained show evidence of a significant two-photon exchange effect. The results are compared with several theoretical predictions.
    Language English
    Publishing date 2015-02-13
    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.114.062005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Two-photon exchange contribution in elastic electron-proton scattering, experiment at the VEPP-3 storage ring

    Nikolenko D.M. / Arrington J. / Barkov L.M. / Dmitriev V.F. / Gauzshtein V.V. / Golovin R.A. / Gramolin A.V. / Holt R.J. / Kaminsky V.V. / Lazarenko B.A. / Mishnev S.I. / Muchnoi N.Yu. / Neufeld V.V. / Rachek I.A. / Sadykov R.Sh. / Shestakov Yu.V. / Stibunov V.N. / Toporkov D.K. / de Vries H. /
    Zevakov S.A. / Zhilich V.N.

    EPJ Web of Conferences, Vol 66, p

    2014  Volume 06002

    Abstract: We describe a precise measurement of the ratio of the (e+ p) to (e− p) elastic scattering cross sections. This comparison is sensitive to the effect of two-photon exchange contributions which may be the cause for inconsistent extractions of the proton ... ...

    Abstract We describe a precise measurement of the ratio of the (e+ p) to (e− p) elastic scattering cross sections. This comparison is sensitive to the effect of two-photon exchange contributions which may be the cause for inconsistent extractions of the proton form factors obtained using different methods. The experiment was performed at storage ring VEPP–3, Novosibirsk at energies of positron/electron beams of 1.0 and 1.6 GeV with electron/positron scattering angles θ = 65÷105° for the first case and 15÷25° and 55÷75° for the second case. Details of the experiment and the preliminary results are presented.
    Keywords Physics ; QC1-999 ; Science ; Q
    Language English
    Publishing date 2014-03-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: New fast beam profile monitor for electron-positron colliders.

    Bogomyagkov, A V / Gurko, V F / Zhuravlev, A N / Zubarev, P V / Kiselev, V A / Meshkov, O I / Muchnoi, N Yu / Selivanov, A N / Smaluk, V V / Khilchenko, A D

    The Review of scientific instruments

    2007  Volume 78, Issue 4, Page(s) 43305

    Abstract: A new fast beam profile monitor has been developed at the Budker Institute of Nuclear Physics. This monitor is based on the Hamamatsu multianode photomultiplier with 16 anode strips and provides turn-by-turn measurement of the transverse beam profile. ... ...

    Abstract A new fast beam profile monitor has been developed at the Budker Institute of Nuclear Physics. This monitor is based on the Hamamatsu multianode photomultiplier with 16 anode strips and provides turn-by-turn measurement of the transverse beam profile. The device is equipped with an internal memory, which has enough capacity to store 131,072 samples of the beam profile. The dynamic range of the beam profile monitor allows us to study turn-by-turn beam dynamics within the bunch charge range from 1 pC up to 10 nC. Using this instrument, we have investigated at the VEPP-4M electron-positron collider a number of beam dynamics effects which cannot be observed by other beam diagnostics tools.
    Language English
    Publishing date 2007-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.2720729
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Study of the process e+e− → 2(π+π−π0) with the CMD-3 detector at VEPP-2000 collider

    Lukin P.A. / Akmetshin R.R. / Anisenkov A.V. / Aulchenko V.M. / Banzarov V.Sh. / Bashtovoy N.S. / Berkaev D.E. / Bondar A.E. / Bragin A.V. / Eidelman S.I. / Epifanov D.A. / Epshteyn L.B. / Erofeev A.L. / Fedotovich G.V. / Gayazov S.E. / Grebenuk A.A. / Grigoriev D.N. / Gromov E.M. / Ignatov F.V. /
    Karpov S.V. / Kazanin V.F. / Khazin B.I. / Koop I.A. / Kovalenko O.A. / Kozyrev A.N. / Kozyrev E.A. / Krokovny P.P. / Kuzmenko A.E. / Kuzmin A.S. / Logashenko I.B. / Mikhailov K.Yu. / Muchnoi N.Yu. / Okhapkin V.S. / Pestov Yu.N. / Perevedentsev E.A. / Popov A.S. / Razuvaev G.P. / Rogovsky Yu.A. / Romanov A.L. / Ruban A.A. / Ryskulov N.M. / Ryzhenenkov A.E. / Shebalin V.E. / Shemyakin D.N. / Shwartz B.A. / Shwartz D.B. / Sibidanov A.L. / Shatunov P.Yu. / Shatunov Yu.M. / Solodov E.P. / Titov V.M. / Talyshev A.A. / Vorobiov A.I. / Yudin Yu.V.

    EPJ Web of Conferences, Vol 81, p

    2014  Volume 02010

    Abstract: Since 2010 the CMD-3 detector has been collecting data at the VEPP-2000 e+e− collider. CMD-3 is a general purpose detector designed to study e+e− annihilation into hadrons in the center-of-mass (c.m.) energy range from 0.3 up to 2 GeV. Preliminary ... ...

    Abstract Since 2010 the CMD-3 detector has been collecting data at the VEPP-2000 e+e− collider. CMD-3 is a general purpose detector designed to study e+e− annihilation into hadrons in the center-of-mass (c.m.) energy range from 0.3 up to 2 GeV. Preliminary results for the e+e− → 2(π+π−π0) cross section were obtained in the c.m. energy range from 1.5 up to 2 GeV. The analysis is based on a data sample of 22 pb−1.
    Keywords Physics ; QC1-999 ; Science ; Q
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Study of the processes e+e− → K+K−π+π−, ϕη with the CMD-3 detector at the e+e− collider VEPP-2000

    Shemyakin D.N. / Akmetshin R.R. / Anisenkov A.V. / Aulchenko V.M. / Banzarov V.Sh. / Bashtovoy N.S. / Berkaev D.E. / Bondar A.E. / Bragin A.V. / Eidelman S.I. / Epifanov D.A. / Epshteyn L.B. / Erofeev A.L. / Fedotovich G.V. / Gayazov S.E. / Grebenuk A.A. / Grigoriev D.N. / Gromov E.M. / Ignatov F.V. /
    Karpov S.V. / Kazanin V.F. / Khazin B.I. / Koop I.A. / Kovalenko O.A. / Kozyrev A.N. / Kozyrev E.A. / Krokovny P.P. / Kuzmenko A.E. / Kuzmin A.S. / Logashenko I.B. / Lukin P.A. / Mikhailov K.Yu. / Muchnoi N.Yu. / Okhapkin V.S. / Pestov Yu.N. / Perevedentsev E.A. / Popov A.S. / Razuvaev G.P. / Rogovsky Yu.A. / Romanov A.L. / Ruban A.A. / Ryskulov N.M. / Ryzhenenkov A.E. / Shebalin V.E. / Shwartz B.A. / Shwartz D.B. / Sibidanov A.L. / Shatunov P.Yu. / Shatunov Yu.M. / Solodov E.P. / Titov V.M. / Talyshev A.A. / Vorobiov A.I. / Yudin Yu.V.

    EPJ Web of Conferences, Vol 81, p

    2014  Volume 02019

    Abstract: We report preliminary results on the measurement of the cross sections of the processes e+e− → K+K−π+π− and e+e− → ϕη in the c.m.energy range from 1.5 GeV to 2 GeV with the CMD-3 detector. The cross sections of these processes agree with BaBar results ... ...

    Abstract We report preliminary results on the measurement of the cross sections of the processes e+e− → K+K−π+π− and e+e− → ϕη in the c.m.energy range from 1.5 GeV to 2 GeV with the CMD-3 detector. The cross sections of these processes agree with BaBar results and have better accuracy.
    Keywords Physics ; QC1-999 ; Science ; Q
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Study of the processes e+e− → K+K−π+π−, ϕη with the CMD-3 detector at the e+e− collider VEPP-2000

    Shemyakin D.N. / Akmetshin R.R. / Anisenkov A.V. / Aulchenko V.M. / Banzarov V.Sh. / Bashtovoy N.S. / Berkaev D.E. / Bondar A.E. / Bragin A.V. / Eidelman S.I. / Epifanov D.A. / Epshteyn L.B. / Erofeev A.L. / Fedotovich G.V. / Gayazov S.E. / Grebenuk A.A. / Grigoriev D.N. / Gromov E.M. / Ignatov F.V. /
    Karpov S.V. / Kazanin V.F. / Khazin B.I. / Koop I.A. / Kovalenko O.A. / Kozyrev A.N. / Kozyrev E.A. / Krokovny P.P. / Kuzmenko A.E. / Kuzmin A.S. / Logashenko I.B. / Lukin P.A. / Mikhailov K.Yu. / Muchnoi N.Yu. / Okhapkin V.S. / Pestov Yu.N. / Perevedentsev E.A. / Popov A.S. / Razuvaev G.P. / Rogovsky Yu.A. / Romanov A.L. / Ruban A.A. / Ryskulov N.M. / Ryzhenenkov A.E. / Shebalin V.E. / Shwartz B.A. / Shwartz D.B. / Sibidanov A.L. / Shatunov P.Yu. / Shatunov Yu.M. / Solodov E.P. / Titov V.M. / Talyshev A.A. / Vorobiov A.I. / Yudin Yu.V.

    EPJ Web of Conferences, Vol 81, p

    2014  Volume 02019

    Abstract: We report preliminary results on the measurement of the cross sections of the processes e+e− → K+K−π+π− and e+e− → ϕη in the c.m.energy range from 1.5 GeV to 2 GeV with the CMD-3 detector. The cross sections of these processes agree with BaBar results ... ...

    Abstract We report preliminary results on the measurement of the cross sections of the processes e+e− → K+K−π+π− and e+e− → ϕη in the c.m.energy range from 1.5 GeV to 2 GeV with the CMD-3 detector. The cross sections of these processes agree with BaBar results and have better accuracy.
    Keywords Physics ; QC1-999 ; Science ; Q
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Study of the process e+e− → 2(π+π−π0) with the CMD-3 detector at VEPP-2000 collider

    Lukin P.A. / Akmetshin R.R. / Anisenkov A.V. / Aulchenko V.M. / Banzarov V.Sh. / Bashtovoy N.S. / Berkaev D.E. / Bondar A.E. / Bragin A.V. / Eidelman S.I. / Epifanov D.A. / Epshteyn L.B. / Erofeev A.L. / Fedotovich G.V. / Gayazov S.E. / Grebenuk A.A. / Grigoriev D.N. / Gromov E.M. / Ignatov F.V. /
    Karpov S.V. / Kazanin V.F. / Khazin B.I. / Koop I.A. / Kovalenko O.A. / Kozyrev A.N. / Kozyrev E.A. / Krokovny P.P. / Kuzmenko A.E. / Kuzmin A.S. / Logashenko I.B. / Mikhailov K.Yu. / Muchnoi N.Yu. / Okhapkin V.S. / Pestov Yu.N. / Perevedentsev E.A. / Popov A.S. / Razuvaev G.P. / Rogovsky Yu.A. / Romanov A.L. / Ruban A.A. / Ryskulov N.M. / Ryzhenenkov A.E. / Shebalin V.E. / Shemyakin D.N. / Shwartz B.A. / Shwartz D.B. / Sibidanov A.L. / Shatunov P.Yu. / Shatunov Yu.M. / Solodov E.P. / Titov V.M. / Talyshev A.A. / Vorobiov A.I. / Yudin Yu.V.

    EPJ Web of Conferences, Vol 81, p

    2014  Volume 02010

    Abstract: Since 2010 the CMD-3 detector has been collecting data at the VEPP-2000 e+e− collider. CMD-3 is a general purpose detector designed to study e+e− annihilation into hadrons in the center-of-mass (c.m.) energy range from 0.3 up to 2 GeV. Preliminary ... ...

    Abstract Since 2010 the CMD-3 detector has been collecting data at the VEPP-2000 e+e− collider. CMD-3 is a general purpose detector designed to study e+e− annihilation into hadrons in the center-of-mass (c.m.) energy range from 0.3 up to 2 GeV. Preliminary results for the e+e− → 2(π+π−π0) cross section were obtained in the c.m. energy range from 1.5 up to 2 GeV. The analysis is based on a data sample of 22 pb−1.
    Keywords Physics ; QC1-999 ; Science ; Q
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: Experimental investigation of high-energy photon splitting in atomic fields.

    Akhmadaliev, Sh Zh / Kezerashvili, G Ya / Klimenko, S G / Lee, R N / Malyshev, V M / Maslennikov, A L / Milov, A M / Milstein, A I / Muchnoi, N Yu / Naumenkov, A I / Panin, V S / Peleganchuk, S V / Pospelov, G E / Protopopov, I Ya / Romanov, L V / Shamov, A G / Shatilov, D N / Simonov, E A / Strakhovenko, V M /
    Tikhonov, Yu A

    Physical review letters

    2002  Volume 89, Issue 6, Page(s) 61802

    Abstract: Data analysis of an experiment in which photon splitting in atomic fields was observed is presented. The experiment was performed at the tagged photon beam of the ROKK-1M facility at the VEPP-4M collider. In the energy region of 120-450 MeV, statistics ... ...

    Abstract Data analysis of an experiment in which photon splitting in atomic fields was observed is presented. The experiment was performed at the tagged photon beam of the ROKK-1M facility at the VEPP-4M collider. In the energy region of 120-450 MeV, statistics of 1.6x10(9) photons incident on the BGO target was collected. About 400 candidate photon-splitting events were reconstructed. Within the attained experimental accuracy, the experimental results are consistent with the calculated exact atomic-field cross section. The predictions obtained in the Born approximation differ significantly from the experimental results.
    Language English
    Publishing date 2002-08-05
    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.89.061802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. 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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