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Search for direct CP violation in charged charmless B β†’ PV decays

Measurements of 𝐢⁒𝑃 asymmetry in charmless 𝐡→𝑃⁒𝑉 decays are presented, where 𝑃 and 𝑉 denote a pseudoscalar and a vector meson, respectively. Five different 𝐡→𝑃⁒𝑉 decays from four final states, π΅Β±β†’πœ‹Β±β’πœ‹+β’πœ‹βˆ’, π΅Β±β†’πΎΒ±β’πœ‹+β’πœ‹βˆ’, 𝐡±→𝐾±⁒𝐾+β’πΎβˆ’ and π΅Β±β†’πœ‹Β±β’πΎ+β’πΎβˆ’ are analyzed. The measurements are based on a method...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Caspary, Rowina (Author) , Frau, Giulia (Author) , Grabowski, Jascha (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Marks, Jörg (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 20 July 2023
In: Physical review
Year: 2023, Volume: 108, Issue: 1, Pages: 1-13
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.012013
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.108.012013
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.108.012013
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Author Notes:R. Aaij et al. (LHCb Collaboration)
Description
Summary:Measurements of 𝐢⁒𝑃 asymmetry in charmless 𝐡→𝑃⁒𝑉 decays are presented, where 𝑃 and 𝑉 denote a pseudoscalar and a vector meson, respectively. Five different 𝐡→𝑃⁒𝑉 decays from four final states, π΅Β±β†’πœ‹Β±β’πœ‹+β’πœ‹βˆ’, π΅Β±β†’πΎΒ±β’πœ‹+β’πœ‹βˆ’, 𝐡±→𝐾±⁒𝐾+β’πΎβˆ’ and π΅Β±β†’πœ‹Β±β’πΎ+β’πΎβˆ’ are analyzed. The measurements are based on a method that does not require full amplitude analyses, and are performed using proton-proton collision data at a center-of-mass energy of 13 TeV collected by LHCb between 2015 and 2018, corresponding to an integrated luminosity of 5.9 fbβˆ’1. In the πœ‹+β’πœ‹βˆ’ 𝑃-wave, in the region dominated by the π΅Β±β†’πœŒβ’(770)0⁒𝐾± decay, a 𝐢⁒𝑃 asymmetry of 𝐴𝐢⁒𝑃=+0.150Β±0.019Β±0.011 is measured, where the first uncertainty is statistical and the second is systematic. This is the first observation of 𝐢⁒𝑃 violation in this process. For the other four decay channels, in regions dominated by the π΅Β±β†’πœŒβ’(770)0β’πœ‹Β±, 𝐡±→(Β― )𝐾⁒ *⁒(892)0β’πœ‹Β±, 𝐡±→(Β― )𝐾⁒ *⁒(892)0⁒𝐾± and π΅Β±β†’πœ™β‘(1020)⁒𝐾± decays, 𝐢⁒𝑃 asymmetries in the 𝑃-wave compatible with zero are measured.
Item Description:Gesehen am 12.07.2024
LHCb Collaboration: R. Aaij, F. Archilli, S. Bachmann, D. Berninghoff, M. Borsato, R. Caspary, G. Frau, J.P. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecna, B. Leverington, P. Li, J. Marks, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, A. Zhelezov [und viele weitere]
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.012013

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