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Measurement of 𝐢⁒𝑃 violation in 𝐡0β†’ πœ“(β†’β„“+β’β„“βˆ’)⁒𝐾0 𝑆⁑(β†’πœ‹+β’πœ‹βˆ’) decays

A measurement of time-dependent 𝐢⁒𝑃 violation in the decays of 𝐡0 and ¯𝐡0 mesons to the final states 𝐽/πœ“β’(β†’πœ‡+β’πœ‡βˆ’)⁒𝐾0𝑆, πœ“β‘(2⁒𝑆)⁒(β†’πœ‡+β’πœ‡βˆ’)⁒𝐾0𝑆 and 𝐽/πœ“β’( →𝑒+β’π‘’βˆ’)⁒𝐾0𝑆 with 𝐾0𝑆 β†’πœ‹+β’πœ‹βˆ’ is presented. The data correspond to an integrated luminosity of 6 fbβˆ’1 collected at a center-of-mass energy of βˆšπ‘  =13 TeV...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Borsato, Martino (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Frau, Giulia (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Pais, Preema (Author) , Tuci, Giulia (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: 2024
In: Physical review letters
Year: 2024, Volume: 132, Issue: 2, Pages: 1-12
ISSN:1079-7114
DOI:10.1103/PhysRevLett.132.021801
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.132.021801
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.132.021801
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Author Notes:R. Aaij et al. (LHCb Collaboration*)
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Summary:A measurement of time-dependent 𝐢⁒𝑃 violation in the decays of 𝐡0 and ¯𝐡0 mesons to the final states 𝐽/πœ“β’(β†’πœ‡+β’πœ‡βˆ’)⁒𝐾0𝑆, πœ“β‘(2⁒𝑆)⁒(β†’πœ‡+β’πœ‡βˆ’)⁒𝐾0𝑆 and 𝐽/πœ“β’( →𝑒+β’π‘’βˆ’)⁒𝐾0𝑆 with 𝐾0𝑆 β†’πœ‹+β’πœ‹βˆ’ is presented. The data correspond to an integrated luminosity of 6 fbβˆ’1 collected at a center-of-mass energy of βˆšπ‘  =13 TeV with the LHCb detector. The 𝐢⁒𝑃-violation parameters are measured to be π‘†πœ“β’πΎ0𝑆=0.717Β±0.013⁒(stat)Β±0.008⁒(syst) and πΆπœ“β’πΎ0𝑆=0.008Β±0.012⁒(stat)Β±0.003⁒(syst). This measurement of π‘†πœ“β’πΎ0𝑆 represents the most precise single measurement of the CKM angle 𝛽 to date and is more precise than the current world average. In addition, measurements of the 𝐢⁒𝑃-violation parameters of the individual channels are reported and a combination with the LHCb Run 1 measurements is performed.
Item Description:Gesehen am 30.06.2025
Veröffentlicht: 8. Januar 2024
*LHCb Collaboration: R. Aaij, S. Bachmann, M. Borsato, L. Carus, R. Caspary, C. Cocha Toapaxi, M. De Cian, G. Frau, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, P.R. Pais, G. Tuci, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov [und 1080 weitere Personen]
Im Titel sind die Zahl 0 sowie die Plus- und Minuszeichen hochgestellt, der Buchstabe S ist tiefgestellt
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.132.021801

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