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Report number arXiv:2105.01565 ; LHCb-PAPER-2020-047 ; CERN-EP-2021-058 ; LHCB-PAPER-2020-047
Title Measurement of CP asymmetry in D0KS0KS0 decays
Author(s) LHCb Collaboration  Visualizza tutti i 968 autori
Corporate Author(s) LHCb Collaboration
Publication 2021-08-01
Imprint 05 May 2021
Number of pages 11
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-2020-047.html (LHCb public pages)
In: Phys. Rev. D 104 (2021) L031102
DOI 10.1103/PhysRevD.104.L031102 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; charm physics ; CP violation
Abstract A measurement of the CP asymmetry in D0KS0KS0 decays is reported, based on a data sample of proton-proton collisions collected by the LHCb experiment from 2015 to 2018, corresponding to an integrated luminosity of 6 fb1. The flavor of the D0 candidate is determined using the charge of the D± meson, from which the decay is required to originate. The D0K+K decay is used as a calibration channel. The time-integrated CP asymmetry for the D0KS0KS0 mode is measured to be: ACP(D0KS0KS0)=(3.1±1.2±0.4±0.2)%, where the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty on the CP asymmetry of the calibration channel. This is the most precise determination of this quantity to date.
Copyright/License publication: © 2021-2024 CERN (License: CC BY 4.0), sponsored by SCOAP³
preprint: © 2021-2024 CERN (License: CC BY 4.0)



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 Record creato 2021-05-05, modificato l'ultima volta il 2024-08-17


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