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Measurement of CP violation in the decay B+→K+π0

A measurement of CP violation in the decay B+→K+π0 is reported using data corresponding to an integrated luminosity of 5.4 fb−1 collected with the LHCb experiment at a center-of-mass energy of √s=13 TeV. The CP asymmetry is measured to be 0.025±0.015±0.006±0.003, where the uncertainties are statisti...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Dziewiecki, Michal (Author) , Frau, Giulia (Author) , Gerick, David (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) , Malygina, Hanna (Author) , Marks, Jörg (Author) , Meinert, Nis (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Viemann, Harald (Author) , Waldi, Roland (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 4 March 2021
In: Physical review letters
Year: 2021, Volume: 126, Issue: 9, Pages: 1-11
ISSN:1079-7114
DOI:10.1103/PhysRevLett.126.091802
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.126.091802
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.126.091802
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Author Notes:R. Aaij et al. (LHCb collaboration)
Description
Summary:A measurement of CP violation in the decay B+→K+π0 is reported using data corresponding to an integrated luminosity of 5.4 fb−1 collected with the LHCb experiment at a center-of-mass energy of √s=13 TeV. The CP asymmetry is measured to be 0.025±0.015±0.006±0.003, where the uncertainties are statistical, systematic, and due to an external input. This is the most precise measurement of this quantity. It confirms and significantly enhances the observed anomalous difference between the direct CP asymmetries of the B0→K+π− and B+→K+π0 decays, known as the Kπ puzzle.
Item Description:Im Titel sind "+" und "0" hochgestellt
Gesehen am 13.04.2021
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.126.091802

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