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Test of lepton flavor universality with B0s β†’ πœ™β„“+β’β„“βˆ’ decays

Lepton flavor universality in rare 𝑏 →𝑠 transitions is tested for the first time using 𝐡0𝑠 meson decays. The measurements are performed using 𝑝⁒𝑝 collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of 9 fbβˆ’1. Branching fraction ratios...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Celani, Sara (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Dittmann, Lucas (Author) , Esen, Sevda (Author) , Glaser, Fabian (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Roy, Shreya (Author) , Ruiz Diaz, Miguel (Author) , Schiller, Manuel (Author) , Tat, Martin Duy (Author) , Tuci, Giulia (Author) , Uecker, Lennart Henning (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 27 March, 2025
In: Physical review letters
Year: 2025, Volume: 134, Issue: 12, Pages: 1-15
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.121803
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.134.121803
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.134.121803
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Author Notes:R. Aaij et al.* (LHCb Collaboration)
Description
Summary:Lepton flavor universality in rare 𝑏 →𝑠 transitions is tested for the first time using 𝐡0𝑠 meson decays. The measurements are performed using 𝑝⁒𝑝 collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of 9 fbβˆ’1. Branching fraction ratios between the 𝐡0π‘ β†’πœ™β’π‘’+β’π‘’βˆ’ and 𝐡0𝑠 β†’πœ™β’πœ‡+β’πœ‡βˆ’ decays are measured in three regions of dilepton mass squared, π‘ž2, with 0.1<π‘ž2<1.1, 1.1 <π‘ž2 <6.0, and 15<π‘ž2<19 GeV2/𝑐4. The results agree with the standard model expectation of lepton flavor universality.
Item Description:Im Text ist "0", "+" und "-" hochgestellt, "3" tiefgestellt
LHCb Collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, M. De Cian, L. Dittmann, S. Esen, F.C. Glaser, P.A. Günther, X. Han, S. Hansmann-Menzemer, P. Herrero Gascón, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, S.R. Roy, M. Ruiz Diaz, M. Schiller, M.D. Tat, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov [und viele weitere]
Gesehen am 07.01.2026
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.121803

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