• Open Access

Search for CP Violation in Ds+KS0π+, D+KS0K+, and D+ϕπ+ Decays

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. Lett. 122, 191803 – Published 17 May 2019

Abstract

A search for charge-parity (CP) violation in Cabibbo-suppressed Ds+KS0π+, D+KS0K+, and D+ϕπ+ decays is reported using proton-proton collision data, corresponding to an integrated luminosity of 3.8fb1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. High-yield samples of kinematically and topologically similar Cabibbo-favored D(s)+ decays are analyzed to subtract nuisance asymmetries due to production and detection effects, including those induced by CP violation in the neutral kaon system. The results are ACP(Ds+KS0π+)=(1.3±1.9±0.5)×103,ACP(D+KS0K+)=(0.09±0.65±0.48)×103,ACP(D+ϕπ+)=(0.05±0.42±0.29)×103,where the first uncertainties are statistical and the second systematic. They are the most precise measurements of these quantities to date, and are consistent with CP symmetry. A combination with previous LHCb measurements, based on data collected at 7 and 8 TeV, is also reported.

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  • Received 5 March 2019

DOI:https://doi.org/10.1103/PhysRevLett.122.191803

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

© 2019 CERN, for the LHCb Collaboration

Physics Subject Headings (PhySH)

  1. Physical Systems
  1. Properties
Particles & Fields

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Vol. 122, Iss. 19 — 17 May 2019

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