Search for <i>CP</i> Violation in <i>D<sub>s</sub></i><SUP>+</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP>π<SUP>+</SUP>, <i>D</i><SUP>+</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP><i>K</i><SUP>+</SUP>, and <i>D</i><SUP>+</SUP> → φπ<SUP>+</SUP> Decays



Aaij, R, Beteta, C Abellan, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 840 more authors) (2019) Search for <i>CP</i> Violation in <i>D<sub>s</sub></i><SUP>+</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP>π<SUP>+</SUP>, <i>D</i><SUP>+</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP><i>K</i><SUP>+</SUP>, and <i>D</i><SUP>+</SUP> → φπ<SUP>+</SUP> Decays. PHYSICAL REVIEW LETTERS, 122 (19). 191803-.

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Abstract

A search for charge-parity (CP) violation in Cabibbo-suppressed D_{s}^{+}→K_{S}^{0}π^{+}, D^{+}→K_{S}^{0}K^{+}, and D^{+}→ϕπ^{+} decays is reported using proton-proton collision data, corresponding to an integrated luminosity of 3.8  fb^{-1}, 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 areA_{CP}(D_{s}^{+}→K_{S}^{0}π^{+})=(1.3±1.9±0.5)×10^{-3},A_{CP}(D^{+}→K_{S}^{0}K^{+})=(-0.09±0.65±0.48)×10^{-3},A_{CP}(D^{+}→ϕπ^{+})=(0.05±0.42±0.29)×10^{-3},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.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-002.html
Uncontrolled Keywords: LHCb Collaboration
Depositing User: Symplectic Admin
Date Deposited: 23 Jan 2020 11:21
Last Modified: 17 Oct 2023 04:05
DOI: 10.1103/PhysRevLett.122.191803
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3071707