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

LHCb Collaboration, Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinén, F., Ackernley, T., et al. (2023). Search for direct CP violation in charged charmless B→PV decays. Physical Review D, 108(1): 012013. doi:10.1103/PhysRevD.108.012013.

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 Creators:
LHCb Collaboration, Author              
Aaij, R., Author
Abdelmotteleb, A. S. W., Author
Abellan Beteta, C., Author
Abudinén, F., Author
Ackernley, T., Author
Adeva, B., Author
Adinolfi, M., Author
Afsharnia, H., Author
Agapopoulou, C., Author
Aidala, C. A., Author
Aiola, S., Author
Ajaltouni, Z., Author
Akar, S., Author
Akiba, K., Author
Albrecht, J., Author
Alessio, F., Author
Alexander, M., Author
Alfonso Albero, A., Author
Aliouche, Z., Author
more..
Affiliations:
1Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society, ou_2074298              

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Free keywords: Mesons, CP violation
 MPINP: LHCb - Abteilung Hinton
 Abstract: Measurements of CP asymmetry in charmless B→PV decays are presented, where P and V denote a pseudoscalar and a vector meson, respectively. Five different B→PV 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)0K± decay, a CP asymmetry of ACP=+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 CP violation in this process. For the other four decay channels, in regions dominated by the B±→ρ(770)0π±, B±→K-∗(892)0π±, B±→K-∗(892)0K± and B±→ϕ(1020)K± decays, CP asymmetries in the P-wave compatible with zero are measured.

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 Dates: 2023-07-20
 Publication Status: Published online
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevD.108.012013
 Degree: -

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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 108 (1) Sequence Number: 012013 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258