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Article ; Online: Left atrial appendage occlusion in atrial fibrillation patients with previous intracranial bleeding: A national multicenter study.

Casu, Gavino / D'Angelo, Giuseppe / Ugo, Fabrizio / Ronco, Federico / Simonetto, Federico / Barbierato, Marco / Magni, Valeria / Boccuzzi, Giacomo / Margonato, Alberto / Moroni, Francesco / Delitala, Alessandro / Lorenzoni, Giovanni / Beneduce, Alessandro / Rametta, Francesco / Mazzone, Patrizio / Della Bella, Paolo / Montorfano, Matteo / Merella, Pierluigi

International journal of cardiology

2020 Volume 328, Page(s) 75–80

Abstract: Background: Intracranial hemorrhage (ICH) represents the most serious complication of oral anticoagulant therapy (OAT) in patients with atrial fibrillation (AF), and AF patients with previous ICH are a challenge for clinicians. Left atrial appendage ( ... ...

Abstract	Background: Intracranial hemorrhage (ICH) represents the most serious complication of oral anticoagulant therapy (OAT) in patients with atrial fibrillation (AF), and AF patients with previous ICH are a challenge for clinicians. Left atrial appendage (LAA) occlusion has emerged as an alternative option for AF patients not suitable for OAT. Currently, few data are available on long term outcomes after LAA occlusion in this population. We evaluated the safety and efficacy of LAA occlusion in a cohort of patients with AF and previous ICH. Methods: This is a multicenter, observational, retrospective study involving 5 LAA occlusion centers in Italy. It includes all consecutive patients (n = 120) with previous ICH who underwent LAA occlusion for nonvalvular AF and high thromboembolic risk. Procedural outcomes, post-procedural therapies and 12-months follow-up data were analyzed. Results: The device was successfully implanted in 100% of cases, with a 6% of major peri-procedural complications. 59% had a prior ICH during OAT. The sample had a high risk of stroke (5.18%/year) and bleeding (6.62%/year). 30% were discharged on single and 54.2% on dual antiplatelet therapy. The expected annual risk for thromboembolism was 5.1%. Excluding periprocedural ischemic complications, the stroke annual rate was 1.8%. The expected annual risk of bleeding was 6.7%. The observed annual bleeding rate was 5.45%. Conclusions: Percutaneous LAA occlusion is an effective option for AF patients and previous intracranial hemorrhage. After LAA occlusion, a single antiplatelet therapy strategy could be considered for patients with the highest risk of recurrent bleeding.
MeSH term(s)	Anticoagulants/adverse effects ; Atrial Appendage/diagnostic imaging ; Atrial Appendage/surgery ; Atrial Fibrillation/complications ; Atrial Fibrillation/diagnosis ; Atrial Fibrillation/drug therapy ; Humans ; Intracranial Hemorrhages/epidemiology ; Italy/epidemiology ; Retrospective Studies ; Stroke/epidemiology ; Stroke/prevention & control ; Treatment Outcome
Chemical Substances	Anticoagulants
Language	English
Publishing date	2020-11-25
Publishing country	Netherlands
Document type	Journal Article ; Multicenter Study ; Observational Study
ZDB-ID	779519-1
ISSN	1874-1754 ; 0167-5273
ISSN (online)	1874-1754
ISSN	0167-5273
DOI	10.1016/j.ijcard.2020.11.045
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Article ; Online: Surgical redo versus transseptal or transapical transcatheter mitral valve-in-valve implantation for failed mitral valve bioprosthesis.

Simonetto, Federico / Purita, Paola A M / Malerba, Massimiliano / Barbierato, Marco / Pascotto, Andrea / Mangino, Domenico / Zanchettin, Chiara / Tarantini, Giuseppe / Gerosa, Gino / D'Onofrio, Augusto / Cernetti, Carlo / Favero, Luca / Daniotti, Alessandro / Minniti, Giuseppe / Caprioglio, Francesco / Erente, Giovanna / Hinna Danesi, Tommaso / Frigo, Anna Chiara / Ronco, Federico

Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions

2020 Volume 97, Issue 4, Page(s) 714–722

Abstract: Background: Redo surgical mitral valve replacement (SMVR) is the current standard of care for patients with failed bioprosthetic mitral valve (MV). Transcatheter mitral valve-in-valve replacement (TMViV) is arising as an alternative to SMVR in high risk ...

Abstract	Background: Redo surgical mitral valve replacement (SMVR) is the current standard of care for patients with failed bioprosthetic mitral valve (MV). Transcatheter mitral valve-in-valve replacement (TMViV) is arising as an alternative to SMVR in high risk patients. We sought to evaluate procedural safety, early and mid-term outcomes of patients who underwent transseptal TMViV (TS-TMViV), transapical TMViV (TA-TMViV), or redo-SMVR. Methods: We identified patients with failed bioprosthetic MV who underwent TS-TMViV, TA-TMViV, or SMVR at four Italian Centers. Clinical and echocardiographic data were codified according to Mitral Valve Academic Research Consortium definition (MVARC), except for significant valve stenosis. Results: Between December 2012 and September 27, 2019 patients underwent TS-TMViV, 22 TA-TMViV, and 29 redo-SMVR. TS-TMViV and TA-TMViV patients presented higher mean age and surgical risk scores compared with SMVR group (77.8 ± 12 years, 77.3 ± 7.3 years, 67.8 ± 9.4 years, p < .001; STS PROM 8.5 ± 7.2; 8.9 ± 4.7; 3.6 ± 2.6, p < .001). TS-TMViV procedure was associated with shorter intensive care unit time and total length of stay (LOS) compared with TA-TMViV and SMVR group. There were no differences in MVARC procedural success at 30-days (74.1, 72.7, and 51.7%, p = .15) and one-year all-cause mortality between groups (14.8, 18.2, and 17.2%, p = 1.0). MV mean gradient was similar between TS-TMViV, TA-TMViV, and SMVR groups at 30 days and 12 months. Conclusions: For the selected patients, TS-TMViV and TA-TMViV are to be considered a valid alternative to redo-SMVR with comparable 1-year survival. TS-TMViV is the less invasive strategy and has the advantage of shortening the LOS compared with TA-TMViV.
MeSH term(s)	Bioprosthesis ; Cardiac Catheterization/adverse effects ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/adverse effects ; Humans ; Mitral Valve/diagnostic imaging ; Mitral Valve/surgery ; Treatment Outcome
Language	English
Publishing date	2020-10-13
Publishing country	United States
Document type	Journal Article
ZDB-ID	1459995-8
ISSN	1522-726X ; 1522-1946
ISSN (online)	1522-726X
ISSN	1522-1946
DOI	10.1002/ccd.29324
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Article ; Online: Search for Evidence of Baryogenesis and Dark Matter in B^{+}→ψ_{D}+p Decays at BABAR.

Lees, J P / Poireau, V / Tisserand, V / Grauges, E / Palano, A / Eigen, G / Brown, D N / Kolomensky, Yu G / Fritsch, M / Koch, H / Cheaib, R / Hearty, C / Mattison, T S / McKenna, J A / So, R Y / Blinov, V E / Buzykaev, A R / Druzhinin, V P / Kozyrev, E A /

Kravchenko, E A / Serednyakov, S I / Skovpen, Yu I / Solodov, E P / Todyshev, K Yu / Lankford, A J / Dey, B / Gary, J W / Long, O / Eisner, A M / Lockman, W S / Panduro Vazquez, W / Chao, D S / Cheng, C H / Echenard, B / Flood, K T / Hitlin, D G / Li, Y / Lin, D X / Middleton, S / Miyashita, T S / Ongmongkolkul, P / Oyang, J / Porter, F C / Röhrken, M / Meadows, B T / Sokoloff, M D / Smith, J G / Wagner, S R / Bernard, D / Verderi, M / Bettoni, D / Bozzi, C / Calabrese, R / Cibinetto, G / Fioravanti, E / Garzia, I / Luppi, E / Santoro, V / Calcaterra, A / de Sangro, R / Finocchiaro, G / Martellotti, S / Patteri, P / Peruzzi, I M / Piccolo, M / Rotondo, M / Zallo, A / Passaggio, S / Patrignani, C / Shuve, B J / Lacker, H M / Bhuyan, B / Mallik, U / Chen, C / Cochran, J / Prell, S / Gritsan, A V / Arnaud, N / Davier, M / Le Diberder, F / Lutz, A M / Wormser, G / Lange, D J / Wright, D M / Coleman, J P / Hutchcroft, D E / Payne, D J / Touramanis, C / Bevan, A J / Di Lodovico, F / Cowan, G / Banerjee, Sw / Davis, C L / Denig, A G / Gradl, W / Griessinger, K / Hafner, A / Schubert, K R / Barlow, R J / Lafferty, G D / Cenci, R / Jawahery, A / Roberts, D A / Cowan, R / Robertson, S H / Seddon, R M / Neri, N / Palombo, F / Cremaldi, L / Godang, R / Summers, D J / De Nardo, G / Sciacca, C / Jessop, C P / LoSecco, J M / Honscheid, K / Gaz, A / Margoni, M / Simi, G / Simonetto, F / Stroili, R / Akar, S / Ben-Haim, E / Bomben, M / Bonneaud, G R / Calderini, G / Chauveau, J / Marchiori, G / Ocariz, J / Biasini, M / Manoni, E / Rossi, A / Batignani, G / Bettarini, S / Carpinelli, M / Casarosa, G / Chrzaszcz, M / Forti, F / Giorgi, M A / Lusiani, A / Oberhof, B / Paoloni, E / Rama, M / Rizzo, G / Walsh, J J / Zani, L / Smith, A J S / Anulli, F / Faccini, R / Ferrarotto, F / Ferroni, F / Pilloni, A / Bünger, C / Dittrich, S / Grünberg, O / Leddig, T / Voß, C / Waldi, R / Adye, T / Wilson, F F / Emery, S / Vasseur, G / Aston, D / Cartaro, C / Convery, M R / Dunwoodie, W / Ebert, M / Field, R C / Fulsom, B G / Graham, M T / Hast, C / Kim, P / Luitz, S / MacFarlane, D B / Muller, D R / Neal, H / Ratcliff, B N / Roodman, A / Sullivan, M K / Va'vra, J / Wisniewski, W J / Purohit, M V / Wilson, J R / Sekula, S J / Ahmed, H / Tasneem, N / Bellis, M / Burchat, P R / Puccio, E M T / Ernst, J A / Gorodeisky, R / Guttman, N / Peimer, D R / Soffer, A / Spanier, S M / Ritchie, J L / Izen, J M / Lou, X C / Bianchi, F / De Mori, F / Filippi, A / Lanceri, L / Vitale, L / Martinez-Vidal, F / Oyanguren, A / Albert, J / Beaulieu, A / Bernlochner, F U / King, G J / Kowalewski, R / Lueck, T / Miller, C / Nugent, I M / Roney, J M / Sobie, R J / Gershon, T J / Harrison, P F / Latham, T E / Wu, S L

Physical review letters

2023 Volume 131, Issue 20, Page(s) 201801

Abstract: A new dark sector antibaryon, denoted ψ_{D}, could be produced in decays of B mesons. This Letter presents a search for B^{+}→ψ_{D}+p (and the charge conjugate) decays in e^{+}e^{-} annihilations at 10.58 GeV, using data collected in the BABAR experiment. ...

Abstract	A new dark sector antibaryon, denoted ψ_{D}, could be produced in decays of B mesons. This Letter presents a search for B^{+}→ψ_{D}+p (and the charge conjugate) decays in e^{+}e^{-} annihilations at 10.58 GeV, using data collected in the BABAR experiment. Data corresponding to an integrated luminosity of 398 fb^{-1} are analyzed. No evidence for a signal is observed. Branching fraction upper limits in the range from 10^{-7}-10^{-5} are obtained at 90% confidence level for masses of 1.0<m_{ψ_{D}}<4.3 GeV/c^{2}. The result is also reinterpreted to provide the first limits on a supersymmetric model with R-parity violation and a light neutralino.<br />
Language	English
Publishing date	2023-12-01
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.131.201801
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Book ; Online: Model-independent extraction of form factors and $|V_{cb}|$ in $\overline{B} \rightarrow D \ell^- \overline{\nu}_\ell$ with hadronic tagging at BaBar

BaBar Collaboration / Lees, J. P. / Poireau, V. / Tisserand, V. / Grauges, E. / Palano, A. / Eigen, G. / Brown, D. N. / Kolomensky, Yu. G. / Fritsch, M. / Koch, H. / Cheaib, R. / Hearty, C. / Mattison, T. S. / McKenna, J. A. / So, R. Y. / Blinov, V. E. / Buzykaev, A. R. / Druzhinin, V. P. /

Kozyrev, E. A. / Kravchenko, E. A. / Serednyakov, S. I. / Skovpen, Yu. I. / Solodov, E. P. / Todyshev, K. Yu. / Lankford, A. J. / Gary, J. W. / Long, O. / Eisner, A. M. / Lockman, W. S. / Vazquez, W. Panduro / Chao, D. S. / Cheng, C. H. / Echenard, B. / Flood, K. T. / Hitlin, D. G. / Li, Y. / Middleton, S. / Miyashita, T. S. / Ongmongkolkul, P. / Oyang, J. / Porter, F. C. / Röhrken, M. / Meadows, B. T. / Sokoloff, M. D. / Smith, J. G. / Wagner, S. R. / Bernard, D. / Verderi, M. / Bettoni, D. / Bozzi, C. / Calabrese, R. / Cibinetto, G. / Fioravanti, E. / Garzia, I. / Luppi, E. / Santoro, V. / Calcaterra, A. / de Sangro, R. / Finocchiaro, G. / Martellotti, S. / Patteri, P. / Peruzzi, I. M. / Piccolo, M. / Rotondo, M. / Zallo, A. / Passaggio, S. / Shuve, B. J. / Lacker, H. M. / Bhuyan, B. / Mallik, U. / Chen, C. / Cochran, J. / Prell, S. / Gritsan, A. V. / Arnaud, N. / Davier, M. / Diberder, F. Le / Lutz, A. M. / Wormser, G. / Lange, D. J. / Wright, D. M. / Coleman, J. P. / Hutchcroft, D. E. / Payne, D. J. / Touramanis, C. / Bevan, A. J. / Cowan, G. / Banerjee, Sw. / Davis, C. L. / Denig, A. G. / Gradl, W. / Griessinger, K. / Hafner, A. / Schubert, K. R. / Lafferty, G. D. / Cenci, R. / Jawahery, A. / Roberts, D. A. / Cowan, R. / Robertson, S. H. / Seddon, R. M. / Neri, N. / Palombo, F. / Cremaldi, L. / Summers, D. J. / De Nardo, G. / Sciacca, C. / Jessop, C. P. / LoSecco, J. M. / Honscheid, K. / Gaz, A. / Margoni, M. / Simi, G. / Simonetto, F. / Stroili, R. / Akar, S. / Ben-Haim, E. / Bomben, M. / Bonneaud, G. R. / Calderini, G. / Chauveau, J. / Marchiori, G. / Ocariz, J. / Biasini, M. / Manoni, E. / Rossi, A. / Batignani, G. / Bettarini, S. / Casarosa, G. / Chrzaszcz, M. / Forti, F. / Giorgi, M. A. / Lusiani, A. / Oberhof, B. / Paoloni, E. / Rama, M. / Rizzo, G. / Walsh, J. J. / Zani, L. / Smith, A. J. S. / Anulli, F. / Faccini, R. / Ferrarotto, F. / Pilloni, A. / Bünger, C. / Dittrich, S. / Grünberg, O. / Leddig, T. / Voß, C. / Waldi, R. / Adye, T. / Wilson, F. F. / Emery, S. / Vasseur, G. / Aston, D. / Cartaro, C. / Convery, M. R. / Dunwoodie, W. / Ebert, M. / Field, R. C. / Fulsom, B. G. / Graham, M. T. / Hast, C. / Kim, P. / Luitz, S. / MacFarlane, D. B. / Muller, D. R. / Neal, H. / Ratcliff, B. N. / Roodman, A. / Sullivan, M. K. / Va'vra, J. / Wisniewski, W. J. / Purohit, M. V. / Wilson, J. R. / Ahmed, H. / Tasneem, N. / Bellis, M. / Burchat, P. R. / Puccio, E. M. T. / Ernst, J. A. / Gorodeisky, R. / Guttman, N. / Peimer, D. R. / Soffer, A. / Spanier, S. M. / Ritchie, J. L. / Izen, J. M. / Lou, X. C. / Bianchi, F. / De Mori, F. / Filippi, A. / Lanceri, L. / Vitale, L. / Martinez-Vidal, F. / Oyanguren, A. / Albert, J. / Beaulieu, A. / Bernlochner, F. U. / King, G. J. / Kowalewski, R. / Lueck, T. / Miller, C. / Nugent, I. M. / Roney, J. M. / Sobie, R. J. / Gershon, T. J. / Harrison, P. F. / Latham, T. E. / Wu, S. L.

2023

Abstract: Using the entire BaBar $\Upsilon(4S)$ data set, the first two-dimensional unbinned angular analysis of the semileptonic decay $\overline{B} \rightarrow D \ell^- \overline{\nu}_\ell$ is performed, employing hadronic reconstruction of the tag-side $B$ ... ...

Abstract	Using the entire BaBar $\Upsilon(4S)$ data set, the first two-dimensional unbinned angular analysis of the semileptonic decay $\overline{B} \rightarrow D \ell^- \overline{\nu}_\ell$ is performed, employing hadronic reconstruction of the tag-side $B$ meson from $\Upsilon(4S)\to B\overline{B}$. Here, $\ell$ denotes the light charged leptons $e$ and $\mu$. A novel data-driven signal-background separation procedure with minimal dependence on simulation is developed. This procedure preserves all multi-dimensional correlations present in the data. The expected $\sin^2\theta_\ell$ dependence of the differential decay rate in the Standard Model is demonstrated, where $\theta_\ell$ is the lepton helicity angle. Including input from the latest lattice QCD calculations and previously available experimental data, the underlying form factors are extracted using both model-independent (BGL) and dependent (CLN) methods. Comparisons with lattice calculations show flavor SU(3) symmetry to be a good approximation in the $B_{(s)}\to D_{(s)}$ sector. Using the BGL results, the CKM matrix element $\|V_{cb}\|=(41.09\pm 1.16)\times 10^{-3}$ and the Standard Model prediction of the lepton-flavor universality violation variable $\mathcal{R}(D)=0.300\pm 0.004$, are extracted. The value of $\|V_{cb}\|$ from $\overline{B} \rightarrow D \ell^- \overline{\nu}_\ell$ tends to be higher than that extracted using $\overline{B} \rightarrow D \ell^- \overline{\nu}_\ell$. The Standard Model $\mathcal{R}(D)$ calculation is at a $1.97\sigma$ tension with the latest HFLAV experimental average.
Keywords	High Energy Physics - Experiment
Subject code	612
Publishing date	2023-11-25
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Search for an Axionlike Particle in B Meson Decays.

Lees, J P / Poireau, V / Tisserand, V / Grauges, E / Palano, A / Eigen, G / Brown, D N / Kolomensky, Yu G / Fritsch, M / Koch, H / Schroeder, T / Cheaib, R / Hearty, C / Mattison, T S / McKenna, J A / So, R Y / Blinov, V E / Buzykaev, A R / Druzhinin, V P /

Golubev, V B / Kozyrev, E A / Kravchenko, E A / Onuchin, A P / Serednyakov, S I / Skovpen, Yu I / Solodov, E P / Todyshev, K Yu / Lankford, A J / Dey, B / Gary, J W / Long, O / Eisner, A M / Lockman, W S / Panduro Vazquez, W / Chao, D S / Cheng, C H / Echenard, B / Flood, K T / Hitlin, D G / Kim, J / Li, Y / Lin, D X / Middleton, S / Miyashita, T S / Ongmongkolkul, P / Oyang, J / Porter, F C / Röhrken, M / Huard, Z / Meadows, B T / Pushpawela, B G / Sokoloff, M D / Sun, L / Smith, J G / Wagner, S R / Bernard, D / Verderi, M / Bettoni, D / Bozzi, C / Calabrese, R / Cibinetto, G / Fioravanti, E / Garzia, I / Luppi, E / Santoro, V / Calcaterra, A / de Sangro, R / Finocchiaro, G / Martellotti, S / Patteri, P / Peruzzi, I M / Piccolo, M / Rotondo, M / Zallo, A / Passaggio, S / Patrignani, C / Flood, I / Nguyen, N / Shuve, B J / Lacker, H M / Bhuyan, B / Mallik, U / Chen, C / Cochran, J / Prell, S / Gritsan, A V / Arnaud, N / Davier, M / Le Diberder, F / Lutz, A M / Wormser, G / Lange, D J / Wright, D M / Coleman, J P / Gabathuler, E / Hutchcroft, D E / Payne, D J / Touramanis, C / Bevan, A J / Di Lodovico, F / Sacco, R / Cowan, G / Banerjee, Sw / Davis, C L / Denig, A G / Gradl, W / Griessinger, K / Hafner, A / Schubert, K R / Barlow, R J / Lafferty, G D / Cenci, R / Jawahery, A / Roberts, D A / Cowan, R / Robertson, S H / Seddon, R M / Neri, N / Palombo, F / Cremaldi, L / Godang, R / Summers, D J / Taras, P / De Nardo, G / Sciacca, C / Raven, G / Jessop, C P / LoSecco, J M / Honscheid, K / Kass, R / Gaz, A / Margoni, M / Posocco, M / Simi, G / Simonetto, F / Stroili, R / Akar, S / Ben-Haim, E / Bomben, M / Bonneaud, G R / Calderini, G / Chauveau, J / Marchiori, G / Ocariz, J / Biasini, M / Manoni, E / Rossi, A / Batignani, G / Bettarini, S / Carpinelli, M / Casarosa, G / Chrzaszcz, M / De Nuccio, M / Forti, F / Giorgi, M A / Lusiani, A / Oberhof, B / Paoloni, E / Rama, M / Rizzo, G / Walsh, J J / Zani, L / Smith, A J S / Anulli, F / Faccini, R / Ferrarotto, F / Ferroni, F / Pilloni, A / Piredda, G / Bünger, C / Dittrich, S / Grünberg, O / Heß, M / Leddig, T / Voß, C / Waldi, R / Adye, T / Wilson, F F / Emery, S / Vasseur, G / Aston, D / Cartaro, C / Convery, M R / Dorfan, J / Dunwoodie, W / Ebert, M / Field, R C / Fulsom, B G / Graham, M T / Hast, C / Innes, W R / Kim, P / Leith, D W G S / Luitz, S / MacFarlane, D B / Muller, D R / Neal, H / Ratcliff, B N / Roodman, A / Sullivan, M K / Va'vra, J / Wisniewski, W J / Purohit, M V / Wilson, J R / Randle-Conde, A / Sekula, S J / Ahmed, H / Tasneem, N / Bellis, M / Burchat, P R / Puccio, E M T / Alam, M S / Ernst, J A / Gorodeisky, R / Guttman, N / Peimer, D R / Soffer, A / Spanier, S M / Ritchie, J L / Schwitters, R F / Izen, J M / Lou, X C / Bianchi, F / De Mori, F / Filippi, A / Gamba, D / Lanceri, L / Vitale, L / Martinez-Vidal, F / Oyanguren, A / Albert, J / Beaulieu, A / Bernlochner, F U / King, G J / Kowalewski, R / Lueck, T / Miller, C / Nugent, I M / Roney, J M / Sobie, R J / Gershon, T J / Harrison, P F / Latham, T E / Prepost, R / Wu, S L

Physical review letters

2022 Volume 128, Issue 13, Page(s) 131802

Abstract: Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in flavor-changing ...

Abstract	Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in flavor-changing B meson decays. We report herein a search for an ALP, a, in the reaction B^{±}→K^{±}a, a→γγ using data collected by the BABAR experiment at SLAC. No significant signal is observed, and 90% confidence level upper limits on the ALP coupling to electroweak bosons are derived as a function of ALP mass, improving current constraints by several orders of magnitude in the range 0.175 GeV<m_{a}<4.78 GeV.<br />
Language	English
Publishing date	2022-04-15
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.128.131802
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for Lepton Flavor Violation in ϒ(3S)→e^{±}μ^{∓}.

Golubev, V B / Kozyrev, E A / Kravchenko, E A / Onuchin, A P / Serednyakov, S I / Skovpen, Yu I / Solodov, E P / Todyshev, K Yu / Lankford, A J / Dey, B / Gary, J W / Long, O / Eisner, A M / Lockman, W S / Panduro Vazquez, W / Chao, D S / Cheng, C H / Echenard, B / Flood, K T / Hitlin, D G / Kim, J / Li, Y / Lin, D X / Middleton, S / Miyashita, T S / Ongmongkolkul, P / Oyang, J / Porter, F C / Röhrken, M / Huard, Z / Meadows, B T / Pushpawela, B G / Sokoloff, M D / Sun, L / Smith, J G / Wagner, S R / Bernard, D / Verderi, M / Bettoni, D / Bozzi, C / Calabrese, R / Cibinetto, G / Fioravanti, E / Garzia, I / Luppi, E / Santoro, V / Calcaterra, A / de Sangro, R / Finocchiaro, G / Martellotti, S / Patteri, P / Peruzzi, I M / Piccolo, M / Rotondo, M / Zallo, A / Passaggio, S / Patrignani, C / Shuve, B J / Lacker, H M / Bhuyan, B / Mallik, U / Chen, C / Cochran, J / Prell, S / Gritsan, A V / Arnaud, N / Davier, M / Le Diberder, F / Lutz, A M / Wormser, G / Lange, D J / Wright, D M / Coleman, J P / Gabathuler, E / Hutchcroft, D E / Payne, D J / Touramanis, C / Bevan, A J / Di Lodovico, F / Sacco, R / Cowan, G / Banerjee, Sw / Davis, C L / Denig, A G / Gradl, W / Griessinger, K / Hafner, A / Schubert, K R / Barlow, R J / Lafferty, G D / Cenci, R / Jawahery, A / Roberts, D A / Cowan, R / Robertson, S H / Seddon, R M / Neri, N / Palombo, F / Cremaldi, L / Godang, R / Summers, D J / Taras, P / De Nardo, G / Sciacca, C / Raven, G / Jessop, C P / LoSecco, J M / Honscheid, K / Kass, R / Gaz, A / Margoni, M / Posocco, M / Simi, G / Simonetto, F / Stroili, R / Akar, S / Ben-Haim, E / Bomben, M / Bonneaud, G R / Calderini, G / Chauveau, J / Marchiori, G / Ocariz, J / Biasini, M / Manoni, E / Rossi, A / Batignani, G / Bettarini, S / Carpinelli, M / Casarosa, G / Chrzaszcz, M / Forti, F / Giorgi, M A / Lusiani, A / Oberhof, B / Paoloni, E / Rama, M / Rizzo, G / Walsh, J J / Zani, L / Smith, A J S / Anulli, F / Faccini, R / Ferrarotto, F / Ferroni, F / Pilloni, A / Piredda, G / Bünger, C / Dittrich, S / Grünberg, O / Heß, M / Leddig, T / Voß, C / Waldi, R / Adye, T / Wilson, F F / Emery, S / Vasseur, G / Aston, D / Cartaro, C / Convery, M R / Dorfan, J / Dunwoodie, W / Ebert, M / Field, R C / Fulsom, B G / Graham, M T / Hast, C / Innes, W R / Kim, P / Leith, D W G S / Luitz, S / MacFarlane, D B / Muller, D R / Neal, H / Ratcliff, B N / Roodman, A / Sullivan, M K / Va'vra, J / Wisniewski, W J / Purohit, M V / Wilson, J R / Randle-Conde, A / Sekula, S J / Ahmed, H / Bellis, M / Burchat, P R / Puccio, E M T / Alam, M S / Ernst, J A / Gorodeisky, R / Guttman, N / Peimer, D R / Soffer, A / Spanier, S M / Ritchie, J L / Schwitters, R F / Izen, J M / Lou, X C / Bianchi, F / De Mori, F / Filippi, A / Gamba, D / Lanceri, L / Vitale, L / Martinez-Vidal, F / Oyanguren, A / Albert, J / Beaulieu, A / Bernlochner, F U / King, G J / Kowalewski, R / Lueck, T / Nugent, I M / Roney, J M / Sobie, R J / Tasneem, N / Gershon, T J / Harrison, P F / Latham, T E / Prepost, R / Wu, S L

Physical review letters

2022 Volume 128, Issue 9, Page(s) 91804

Abstract: We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a b quark and b antiquark bound state. We look for the LFV decay ϒ(3S)→e^{±}μ^{∓} in a sample of 118 million ϒ(3S) mesons from 27 fb^{-1} of data collected ... ...

Abstract	We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a b quark and b antiquark bound state. We look for the LFV decay ϒ(3S)→e^{±}μ^{∓} in a sample of 118 million ϒ(3S) mesons from 27 fb^{-1} of data collected with the BABAR detector at the SLAC PEP-II e^{+}e^{-} collider operating with a 10.36 GeV center-of-mass energy. No evidence for a signal is found, and we set a limit on the branching fraction B[ϒ(3S)→e^{±}μ^{∓}]<3.6×10^{-7} at 90% C. L. This result can be interpreted as a limit Λ_{NP}/g_{NP}^{2}>80 TeV on the energy scale Λ_{NP} divided by the coupling-squared g_{NP}^{2} of relevant new physics (NP).
Language	English
Publishing date	2022-03-18
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.128.091804
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Article ; Online: Search for Darkonium in e^{+}e^{-} Collisions.

Golubev, V B / Kozyrev, E A / Kravchenko, E A / Onuchin, A P / Serednyakov, S I / Skovpen, Yu I / Solodov, E P / Todyshev, K Yu / Lankford, A J / Dey, B / Gary, J W / Long, O / Eisner, A M / Lockman, W S / Panduro Vazquez, W / Chao, D S / Cheng, C H / Echenard, B / Flood, K T / Hitlin, D G / Kim, J / Li, Y / Lin, D X / Miyashita, T S / Ongmongkolkul, P / Oyang, J / Porter, F C / Röhrken, M / Huard, Z / Meadows, B T / Pushpawela, B G / Sokoloff, M D / Sun, L / Smith, J G / Wagner, S R / Bernard, D / Verderi, M / Bettoni, D / Bozzi, C / Calabrese, R / Cibinetto, G / Fioravanti, E / Garzia, I / Luppi, E / Santoro, V / Calcaterra, A / de Sangro, R / Finocchiaro, G / Martellotti, S / Patteri, P / Peruzzi, I M / Piccolo, M / Rotondo, M / Zallo, A / Passaggio, S / Patrignani, C / Shuve, B J / Lacker, H M / Bhuyan, B / Mallik, U / Chen, C / Cochran, J / Prell, S / Gritsan, A V / Arnaud, N / Davier, M / Le Diberder, F / Lutz, A M / Wormser, G / Lange, D J / Wright, D M / Coleman, J P / Gabathuler, E / Hutchcroft, D E / Payne, D J / Touramanis, C / Bevan, A J / Di Lodovico, F / Sacco, R / Cowan, G / Banerjee, Sw / Davis, C L / Denig, A G / Gradl, W / Griessinger, K / Hafner, A / Schubert, K R / Barlow, R J / Lafferty, G D / Cenci, R / Jawahery, A / Roberts, D A / Cowan, R / Robertson, S H / Seddon, R M / Neri, N / Palombo, F / Cremaldi, L / Godang, R / Summers, D J / Taras, P / De Nardo, G / Sciacca, C / Raven, G / Jessop, C P / LoSecco, J M / Honscheid, K / Kass, R / Gaz, A / Margoni, M / Posocco, M / Simi, G / Simonetto, F / Stroili, R / Akar, S / Ben-Haim, E / Bomben, M / Bonneaud, G R / Calderini, G / Chauveau, J / Marchiori, G / Ocariz, J / Biasini, M / Manoni, E / Rossi, A / Batignani, G / Bettarini, S / Carpinelli, M / Casarosa, G / Chrzaszcz, M / Forti, F / Giorgi, M A / Lusiani, A / Oberhof, B / Paoloni, E / Rama, M / Rizzo, G / Walsh, J J / Zani, L / Smith, A J S / Anulli, F / Faccini, R / Ferrarotto, F / Ferroni, F / Pilloni, A / Piredda, G / Bünger, C / Dittrich, S / Grünberg, O / Heß, M / Leddig, T / Voß, C / Waldi, R / Adye, T / Wilson, F F / Emery, S / Vasseur, G / Aston, D / Cartaro, C / Convery, M R / Dorfan, J / Dunwoodie, W / Ebert, M / Field, R C / Fulsom, B G / Graham, M T / Hast, C / Innes, W R / Kim, P / Leith, D W G S / Luitz, S / MacFarlane, D B / Muller, D R / Neal, H / Ratcliff, B N / Roodman, A / Sullivan, M K / Va'vra, J / Wisniewski, W J / Purohit, M V / Wilson, J R / Randle-Conde, A / Sekula, S J / Ahmed, H / Bellis, M / Burchat, P R / Puccio, E M T / Alam, M S / Ernst, J A / Gorodeisky, R / Guttman, N / Peimer, D R / Soffer, A / Spanier, S M / Ritchie, J L / Schwitters, R F / Izen, J M / Lou, X C / Bianchi, F / De Mori, F / Filippi, A / Gamba, D / Lanceri, L / Vitale, L / Martinez-Vidal, F / Oyanguren, A / Albert, J / Beaulieu, A / Bernlochner, F U / King, G J / Kowalewski, R / Lueck, T / Nugent, I M / Roney, J M / Sobie, R J / Tasneem, N / Gershon, T J / Harrison, P F / Latham, T E / Prepost, R / Wu, S L

Physical review letters

2022 Volume 128, Issue 2, Page(s) 21802

Abstract: Collider searches for dark sectors, new particles interacting only feebly with ordinary matter, have largely focused on identifying signatures of new mediators, leaving much of dark sector structures unexplored. In particular, the existence of dark ... ...

Abstract	Collider searches for dark sectors, new particles interacting only feebly with ordinary matter, have largely focused on identifying signatures of new mediators, leaving much of dark sector structures unexplored. In particular, the existence of dark matter bound states (darkonia) remains to be investigated. This possibility could arise in a simple model in which a dark photon (A^{'}) is light enough to generate an attractive force between dark fermions. We report herein a search for a J^{PC}=1^{--} darkonium state, the ϒ_{D}, produced in the reaction e^{+}e^{-}→γϒ_{D}, ϒ_{D}→A^{'}A^{'}A^{'}, where the dark photons subsequently decay into pairs of leptons or pions, using 514 fb^{-1} of data collected with the BABAR detector. No significant signal is observed, and we set bounds on the γ-A^{'} kinetic mixing as a function of the dark sector coupling constant for 0.001<m_{A^{'}}<3.16 GeV and 0.05<m_{ϒ_{D}}<9.5 GeV.<br />
Language	English
Publishing date	2022-01-28
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.128.021802
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Precision Measurement of the Ratio B(ϒ(3S)→τ^{+}τ^{-})/B(ϒ(3S)→μ^{+}μ^{-}).

Golubev, V B / Kozyrev, E A / Kravchenko, E A / Onuchin, A P / Serednyakov, S I / Skovpen, Yu I / Solodov, E P / Todyshev, K Yu / Lankford, A J / Dey, B / Gary, J W / Long, O / Eisner, A M / Lockman, W S / Panduro Vazquez, W / Chao, D S / Cheng, C H / Echenard, B / Flood, K T / Hitlin, D G / Kim, J / Li, Y / Lin, D X / Miyashita, T S / Ongmongkolkul, P / Oyang, J / Porter, F C / Röhrken, M / Huard, Z / Meadows, B T / Pushpawela, B G / Sokoloff, M D / Sun, L / Smith, J G / Wagner, S R / Bernard, D / Verderi, M / Bettoni, D / Bozzi, C / Calabrese, R / Cibinetto, G / Fioravanti, E / Garzia, I / Luppi, E / Santoro, V / Calcaterra, A / de Sangro, R / Finocchiaro, G / Martellotti, S / Patteri, P / Peruzzi, I M / Piccolo, M / Rotondo, M / Zallo, A / Passaggio, S / Patrignani, C / Shuve, B J / Lacker, H M / Bhuyan, B / Mallik, U / Chen, C / Cochran, J / Prell, S / Gritsan, A V / Arnaud, N / Davier, M / Le Diberder, F / Lutz, A M / Wormser, G / Lange, D J / Wright, D M / Coleman, J P / Gabathuler, E / Hutchcroft, D E / Payne, D J / Touramanis, C / Bevan, A J / Di Lodovico, F / Sacco, R / Cowan, G / Banerjee, Sw / Davis, C L / Denig, A G / Gradl, W / Griessinger, K / Hafner, A / Schubert, K R / Barlow, R J / Lafferty, G D / Cenci, R / Jawahery, A / Roberts, D A / Cowan, R / Robertson, S H / Seddon, R M / Neri, N / Palombo, F / Cremaldi, L / Godang, R / Summers, D J / Taras, P / De Nardo, G / Sciacca, C / Raven, G / Jessop, C P / LoSecco, J M / Honscheid, K / Kass, R / Gaz, A / Margoni, M / Posocco, M / Simi, G / Simonetto, F / Stroili, R / Akar, S / Ben-Haim, E / Bomben, M / Bonneaud, G R / Calderini, G / Chauveau, J / Marchiori, G / Ocariz, J / Biasini, M / Manoni, E / Rossi, A / Batignani, G / Bettarini, S / Carpinelli, M / Casarosa, G / Chrzaszcz, M / Forti, F / Giorgi, M A / Lusiani, A / Oberhof, B / Paoloni, E / Rama, M / Rizzo, G / Walsh, J J / Zani, L / Smith, A J S / Anulli, F / Faccini, R / Ferrarotto, F / Ferroni, F / Pilloni, A / Piredda, G / Bünger, C / Dittrich, S / Grünberg, O / Heß, M / Leddig, T / Voß, C / Waldi, R / Adye, T / Wilson, F F / Emery, S / Vasseur, G / Aston, D / Cartaro, C / Convery, M R / Dorfan, J / Dunwoodie, W / Ebert, M / Field, R C / Fulsom, B G / Graham, M T / Hast, C / Innes, W R / Kim, P / Leith, D W G S / Luitz, S / MacFarlane, D B / Muller, D R / Neal, H / Ratcliff, B N / Roodman, A / Sullivan, M K / Va'vra, J / Wisniewski, W J / Purohit, M V / Wilson, J R / Randle-Conde, A / Sekula, S J / Ahmed, H / Bellis, M / Burchat, P R / Puccio, E M T / Alam, M S / Ernst, J A / Gorodeisky, R / Guttman, N / Peimer, D R / Soffer, A / Spanier, S M / Ritchie, J L / Schwitters, R F / Izen, J M / Lou, X C / Bianchi, F / De Mori, F / Filippi, A / Gamba, D / Lanceri, L / Vitale, L / Martinez-Vidal, F / Oyanguren, A / Albert, J / Beaulieu, A / Bernlochner, F U / King, G J / Kowalewski, R / Lueck, T / Nugent, I M / Roney, J M / Sibidanov, A / Sobie, R J / Tasneem, N / Gershon, T J / Harrison, P F / Latham, T E / Prepost, R / Wu, S L

Physical review letters

2021 Volume 125, Issue 24, Page(s) 241801

Abstract: We report on a precision measurement of the ratio R_{τμ}^{ϒ(3S)}=B(ϒ(3S)→τ^{+}τ^{-})/B(ϒ(3S)→μ^{+}μ^{-}) using data collected with the BABAR detector at the SLAC PEP-II e^{+}e^{-} collider. The measurement is based on a 28 fb^{-1} data sample collected ... ...

Abstract	We report on a precision measurement of the ratio R_{τμ}^{ϒ(3S)}=B(ϒ(3S)→τ^{+}τ^{-})/B(ϒ(3S)→μ^{+}μ^{-}) using data collected with the BABAR detector at the SLAC PEP-II e^{+}e^{-} collider. The measurement is based on a 28 fb^{-1} data sample collected at a center-of-mass energy of 10.355 GeV corresponding to a sample of 122 million ϒ(3S) mesons. The ratio is measured to be R_{τμ}^{ϒ(3S)}=0.966±0.008_{stat}±0.014_{syst} and is in agreement with the standard model prediction of 0.9948 within 2 standard deviations. The uncertainty in R_{τμ}^{ϒ(3S)} is almost an order of magnitude smaller than the only previous measurement.
Language	English
Publishing date	2021-01-04
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.125.241801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Measurements of the Absolute Branching Fractions of B^{±}→K^{±}X_{cc[over ¯]}.

Golubev, V B / Kozyrev, E A / Kravchenko, E A / Onuchin, A P / Serednyakov, S I / Skovpen, Yu I / Solodov, E P / Todyshev, K Yu / Lankford, A J / Dey, B / Gary, J W / Long, O / Eisner, A M / Lockman, W S / Panduro Vazquez, W / Chao, D S / Cheng, C H / Echenard, B / Flood, K T / Hitlin, D G / Kim, J / Li, Y / Miyashita, T S / Ongmongkolkul, P / Porter, F C / Röhrken, M / Huard, Z / Meadows, B T / Pushpawela, B G / Sokoloff, M D / Sun, L / Smith, J G / Wagner, S R / Bernard, D / Verderi, M / Bettoni, D / Bozzi, C / Calabrese, R / Cibinetto, G / Fioravanti, E / Garzia, I / Luppi, E / Santoro, V / Calcaterra, A / de Sangro, R / Finocchiaro, G / Martellotti, S / Patteri, P / Peruzzi, I M / Piccolo, M / Rotondo, M / Zallo, A / Passaggio, S / Patrignani, C / Shuve, B J / Lacker, H M / Bhuyan, B / Mallik, U / Chen, C / Cochran, J / Prell, S / Gritsan, A V / Arnaud, N / Davier, M / Le Diberder, F / Lutz, A M / Wormser, G / Lange, D J / Wright, D M / Coleman, J P / Gabathuler, E / Hutchcroft, D E / Payne, D J / Touramanis, C / Bevan, A J / Di Lodovico, F / Sacco, R / Cowan, G / Banerjee, Sw / Davis, C L / Denig, A G / Gradl, W / Griessinger, K / Hafner, A / Schubert, K R / Barlow, R J / Lafferty, G D / Cenci, R / Jawahery, A / Roberts, D A / Cowan, R / Robertson, S H / Seddon, R M / Neri, N / Palombo, F / Cremaldi, L / Godang, R / Summers, D J / Taras, P / De Nardo, G / Sciacca, C / Raven, G / Jessop, C P / LoSecco, J M / Honscheid, K / Kass, R / Gaz, A / Margoni, M / Posocco, M / Simi, G / Simonetto, F / Stroili, R / Akar, S / Ben-Haim, E / Bomben, M / Bonneaud, G R / Calderini, G / Chauveau, J / Marchiori, G / Ocariz, J / Biasini, M / Manoni, E / Rossi, A / Batignani, G / Bettarini, S / Carpinelli, M / Casarosa, G / Chrzaszcz, M / Forti, F / Giorgi, M A / Lusiani, A / Oberhof, B / Paoloni, E / Rama, M / Rizzo, G / Walsh, J J / Zani, L / Smith, A J S / Anulli, F / Faccini, R / Ferrarotto, F / Ferroni, F / Pilloni, A / Piredda, G / Bünger, C / Dittrich, S / Grünberg, O / Heß, M / Leddig, T / Voß, C / Waldi, R / Adye, T / Wilson, F F / Emery, S / Vasseur, G / Aston, D / Cartaro, C / Convery, M R / Dorfan, J / Dunwoodie, W / Ebert, M / Field, R C / Fulsom, B G / Graham, M T / Hast, C / Innes, W R / Kim, P / Leith, D W G S / Luitz, S / MacFarlane, D B / Muller, D R / Neal, H / Ratcliff, B N / Roodman, A / Sullivan, M K / Va'vra, J / Wisniewski, W J / Purohit, M V / Wilson, J R / Randle-Conde, A / Sekula, S J / Ahmed, H / Bellis, M / Burchat, P R / Puccio, E M T / Alam, M S / Ernst, J A / Gorodeisky, R / Guttman, N / Peimer, D R / Soffer, A / Spanier, S M / Ritchie, J L / Schwitters, R F / Izen, J M / Lou, X C / Bianchi, F / De Mori, F / Filippi, A / Gamba, D / Lanceri, L / Vitale, L / Martinez-Vidal, F / Oyanguren, A / Albert, J / Beaulieu, A / Bernlochner, F U / King, G J / Kowalewski, R / Lueck, T / Nugent, I M / Roney, J M / Sobie, R J / Tasneem, N / Gershon, T J / Harrison, P F / Latham, T E / Prepost, R / Wu, S L

Physical review letters

2020 Volume 124, Issue 15, Page(s) 152001

Abstract: A study of the two-body decays B^{±}→X_{cc[over ¯]}K^{±}, where X_{cc[over ¯]} refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of 424 fb^{-1}. The absolute determination of branching fractions for these decays ... ...

Abstract	A study of the two-body decays B^{±}→X_{cc[over ¯]}K^{±}, where X_{cc[over ¯]} refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of 424 fb^{-1}. The absolute determination of branching fractions for these decays are significantly improved compared to previous BABAR measurements. Evidence is found for the decay B^{+}→X(3872)K^{+} at the 3σ level. The absolute branching fraction B[B^{+}→X(3872)K^{+}]=[2.1±0.6(stat)±0.3(syst)]×10^{-4} is measured for the first time. It follows that B[X(3872)→J/ψπ^{+}π^{-}]=(4.1±1.3)%, supporting the hypothesis of a molecular component for this resonance.
Language	English
Publishing date	2020-05-01
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.124.152001
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for a Dark Leptophilic Scalar in e^{+}e^{-} Collisions.

Golubev, V B / Kozyrev, E A / Kravchenko, E A / Onuchin, A P / Serednyakov, S I / Skovpen, Yu I / Solodov, E P / Todyshev, K Yu / Lankford, A J / Dey, B / Gary, J W / Long, O / Eisner, A M / Lockman, W S / Panduro Vazquez, W / Chao, D S / Cheng, C H / Echenard, B / Flood, K T / Hitlin, D G / Kim, J / Li, Y / Lin, D X / Miyashita, T S / Ongmongkolkul, P / Oyang, J / Porter, F C / Röhrken, M / Huard, Z / Meadows, B T / Pushpawela, B G / Sokoloff, M D / Sun, L / Smith, J G / Wagner, S R / Bernard, D / Verderi, M / Bettoni, D / Bozzi, C / Calabrese, R / Cibinetto, G / Fioravanti, E / Garzia, I / Luppi, E / Santoro, V / Calcaterra, A / de Sangro, R / Finocchiaro, G / Martellotti, S / Patteri, P / Peruzzi, I M / Piccolo, M / Rotondo, M / Zallo, A / Passaggio, S / Patrignani, C / Shuve, B J / Lacker, H M / Bhuyan, B / Mallik, U / Chen, C / Cochran, J / Prell, S / Gritsan, A V / Arnaud, N / Davier, M / Le Diberder, F / Lutz, A M / Wormser, G / Lange, D J / Wright, D M / Coleman, J P / Gabathuler, E / Hutchcroft, D E / Payne, D J / Touramanis, C / Bevan, A J / Di Lodovico, F / Sacco, R / Cowan, G / Banerjee, Sw / Davis, C L / Denig, A G / Gradl, W / Griessinger, K / Hafner, A / Schubert, K R / Barlow, R J / Lafferty, G D / Cenci, R / Jawahery, A / Roberts, D A / Cowan, R / Robertson, S H / Seddon, R M / Neri, N / Palombo, F / Cremaldi, L / Godang, R / Summers, D J / Taras, P / De Nardo, G / Sciacca, C / Raven, G / Jessop, C P / LoSecco, J M / Honscheid, K / Kass, R / Gaz, A / Margoni, M / Posocco, M / Simi, G / Simonetto, F / Stroili, R / Akar, S / Ben-Haim, E / Bomben, M / Bonneaud, G R / Calderini, G / Chauveau, J / Marchiori, G / Ocariz, J / Biasini, M / Manoni, E / Rossi, A / Batignani, G / Bettarini, S / Carpinelli, M / Casarosa, G / Chrzaszcz, M / Forti, F / Giorgi, M A / Lusiani, A / Oberhof, B / Paoloni, E / Rama, M / Rizzo, G / Walsh, J J / Zani, L / Smith, A J S / Anulli, F / Faccini, R / Ferrarotto, F / Ferroni, F / Pilloni, A / Piredda, G / Bünger, C / Dittrich, S / Grünberg, O / Heß, M / Leddig, T / Voß, C / Waldi, R / Adye, T / Wilson, F F / Emery, S / Vasseur, G / Aston, D / Cartaro, C / Convery, M R / Dorfan, J / Dunwoodie, W / Ebert, M / Field, R C / Fulsom, B G / Graham, M T / Hast, C / Innes, W R / Kim, P / Leith, D W G S / Luitz, S / MacFarlane, D B / Muller, D R / Neal, H / Ratcliff, B N / Roodman, A / Sullivan, M K / Va'vra, J / Wisniewski, W J / Purohit, M V / Wilson, J R / Randle-Conde, A / Sekula, S J / Ahmed, H / Bellis, M / Burchat, P R / Puccio, E M T / Alam, M S / Ernst, J A / Gorodeisky, R / Guttman, N / Peimer, D R / Soffer, A / Spanier, S M / Ritchie, J L / Schwitters, R F / Izen, J M / Lou, X C / Bianchi, F / De Mori, F / Filippi, A / Gamba, D / Lanceri, L / Vitale, L / Martinez-Vidal, F / Oyanguren, A / Albert, J / Beaulieu, A / Bernlochner, F U / King, G J / Kowalewski, R / Lueck, T / Nugent, I M / Roney, J M / Sobie, R J / Tasneem, N / Gershon, T J / Harrison, P F / Latham, T E / Prepost, R / Wu, S L

Physical review letters

2020 Volume 125, Issue 18, Page(s) 181801

Abstract: Many scenarios of physics beyond the standard model predict the existence of new gauge singlets, which might be substantially lighter than the weak scale. The experimental constraints on additional scalars with masses in the MeV to GeV range could be ... ...

Abstract	Many scenarios of physics beyond the standard model predict the existence of new gauge singlets, which might be substantially lighter than the weak scale. The experimental constraints on additional scalars with masses in the MeV to GeV range could be significantly weakened if they interact predominantly with leptons rather than quarks. At an e^{+}e^{-} collider, such a leptophilic scalar (ϕ_{L}) would be produced predominantly through radiation from a τ lepton. We report herein a search for e^{+}e^{-}→τ^{+}τ^{-}ϕ_{L}, ϕ_{L}→ℓ^{+}ℓ^{-} (ℓ=e, μ) using data collected by the BABAR experiment at SLAC. No significant signal is observed, and we set limits on the ϕ_{L} coupling to leptons in the range 0.04<m_{ϕ_{L}}<7.0 GeV. These bounds significantly improve upon the current constraints, excluding almost entirely the parameter space favored by the observed discrepancy in the muon anomalous magnetic moment below 4 GeV at 90% confidence level.<br />
Language	English
Publishing date	2020-11-16
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.125.181801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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