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Article
Report number arXiv:2204.12228 ; CERN-EP-2022-035 ; LHCb-PAPER-2021-051
Title Measurement of CP asymmetries in D+(s)ηπ+D+(s)ηπ+ and D+(s)ηπ+D+(s)ηπ+ decays
Author(s) LHCb Collaboration  Показване на всичките 1014 автора
Corporate Author(s) LHCb Collaboration
Publication 2023-04-18
Imprint 2022-04-26
Number of pages 16
Note All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-051.html (LHCb public pages)
In: JHEP 04 (2023) 081
DOI 10.1007/JHEP04(2023)081
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; charm physics
Abstract Searches for CPCP violation in the decays D+(s)ηπ+D+(s)ηπ+ and D+(s)ηπ+D+(s)ηπ+ are performed using pppp collision data corresponding to 6 fb11 of integrated luminosity collected by the LHCb experiment. The calibration channels D+(s)ϕπ+D+(s)ϕπ+ are used to remove production and detection asymmetries. The resulting CPCP-violating asymmetries are ACP(D+ηπ+)=(0.34±0.66±0.16±0.05)%ACP(D+ηπ+)=(0.34±0.66±0.16±0.05)%, ACP(D+sηπ+)=(0.32±0.51±0.12)%ACP(D+sηπ+)=(0.32±0.51±0.12)%, ACP(D+ηπ+)=(0.49±0.18±0.06±0.05)%ACP(D+ηπ+)=(0.49±0.18±0.06±0.05)%, ACP(D+sηπ+)=(0.01±0.12±0.08)%ACP(D+sηπ+)=(0.01±0.12±0.08)%, where the first uncertainty is statistical, the second is systematic and the third, relevant for the D+ channels, is due to the uncertainty on ACP(D+ϕπ+). These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of CP violation. A combination of these results with previous LHCb measurements is presented.
Copyright/License Publication: © 2023-2025 CERN (License: CC-BY-4.0), sponsored by SCOAP³
Preprint: © 2022-2025 CERN (License: CC-BY-4.0)



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Email contact: lhcb.secretariat@cern.ch


 Записът е създаден на 2022-04-28, последна промяна на 2024-08-17


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