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Search for direct CP violation in charged charmless B → PV decays

Measurements of 𝐶⁢𝑃 asymmetry in charmless 𝐵→𝑃⁢𝑉 decays are presented, where 𝑃 and 𝑉 denote a pseudoscalar and a vector meson, respectively. Five different 𝐵→𝑃⁢𝑉 decays from four final states, 𝐵±→𝜋±⁢𝜋+⁢𝜋−, 𝐵±→𝐾±⁢𝜋+⁢𝜋−, 𝐵±→𝐾±⁢𝐾+⁢𝐾− and 𝐵±→𝜋±⁢𝐾+⁢𝐾− are analyzed. The measurements are based on a method...

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Hauptverfasser: Aaij, Roel (Verfasst von) , Archilli, Flavio (Verfasst von) , Bachmann, Sebastian (Verfasst von) , Berninghoff, Daniel (Verfasst von) , Borsato, Martino (Verfasst von) , Caspary, Rowina (Verfasst von) , Frau, Giulia (Verfasst von) , Grabowski, Jascha (Verfasst von) , Günther, Paul André (Verfasst von) , Han, Xiaoxue (Verfasst von) , Hansmann-Menzemer, Stephanie (Verfasst von) , Hu, Jiangqiao (Verfasst von) , Kopecná, Renata (Verfasst von) , Leverington, Blake (Verfasst von) , Li, Peilian (Verfasst von) , Marks, Jörg (Verfasst von) , Unverzagt, Daniel Joachim (Verfasst von) , Uwer, Ulrich (Verfasst von) , Wang, Chishuai (Verfasst von) , Witola, Lukas (Verfasst von) , Zhelezov, Alexey (Verfasst von)
Körperschaft: LHCb Collaboration (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 20 July 2023
In: Physical review
Year: 2023, Jahrgang: 108, Heft: 1, Pages: 1-13
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.012013
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.108.012013
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.108.012013
Volltext
Verfasserangaben:R. Aaij et al. (LHCb Collaboration)
Beschreibung
Zusammenfassung:Measurements of 𝐶⁢𝑃 asymmetry in charmless 𝐵→𝑃⁢𝑉 decays are presented, where 𝑃 and 𝑉 denote a pseudoscalar and a vector meson, respectively. Five different 𝐵→𝑃⁢𝑉 decays from four final states, 𝐵±→𝜋±⁢𝜋+⁢𝜋−, 𝐵±→𝐾±⁢𝜋+⁢𝜋−, 𝐵±→𝐾±⁢𝐾+⁢𝐾− and 𝐵±→𝜋±⁢𝐾+⁢𝐾− 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 fb−1. In the 𝜋+⁢𝜋− 𝑃-wave, in the region dominated by the 𝐵±→𝜌⁢(770)0⁢𝐾± decay, a 𝐶⁢𝑃 asymmetry of 𝐴𝐶⁢𝑃=+0.150±0.019±0.011 is measured, where the first uncertainty is statistical and the second is systematic. This is the first observation of 𝐶⁢𝑃 violation in this process. For the other four decay channels, in regions dominated by the 𝐵±→𝜌⁢(770)0⁢𝜋±, 𝐵±→(¯ )𝐾⁢ *⁢(892)0⁢𝜋±, 𝐵±→(¯ )𝐾⁢ *⁢(892)0⁢𝐾± and 𝐵±→𝜙⁡(1020)⁢𝐾± decays, 𝐶⁢𝑃 asymmetries in the 𝑃-wave compatible with zero are measured.
Beschreibung: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]
Beschreibung:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.012013

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