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Article
Report number arXiv:2409.01414 ; CERN-EP-2024-204 ; LHCb-PAPER-2024-019
Title Measurement of CP violation observables in D+KK+π+ decays
Author(s) LHCb Collaboration  顯示全部 1142 名作者
Corporate Author(s) LHCb Collaboration
Publication 2024-12-16
Imprint 06 Sep 2024
Number of pages 13
Note All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/1616 (LHCb public pages)
In: Phys. Rev. Lett. 133 (2024) 251801
DOI 10.1103/PhysRevLett.133.251801 (publication)
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; charm physics ; CP violation
Abstract A search for violation of the charge-parity (CP) symmetry in the D+KK+π+ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used to compare the D+ and D phase-space distributions, with instrumental asymmetries subtracted using the D+sKK+π+ decay as a control channel. The p-value for the hypothesis of CP conservation is 8.1%. The CP asymmetry observables ACP|Sϕπ+=(0.95±0.43stat±0.26syst)×103 and ACP|SK¯0K+=(0.26±0.56stat±0.18syst)×103 are also measured. These results show no evidence of CP violation and represent the most sensitive search performed through the phase space of a multibody decay.
Copyright/License Preprint: © 2024 CERN (License: CC-BY-4.0)
Publication: © 2024 CERN (License: CC BY 4.0), sponsored by SCOAP³



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 記錄創建於2024-09-06,最後更新在2024-12-20


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