A search for direct CP violation in the Cabibbo-suppressed decay Ds+ → K − K + K + and in the doubly Cabibbo-suppressed decay D + → K − K + K + is reported. The analysis is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb −1. The search is conducted by comparing the D(s)+ and D(s)− Dalitz-plot distributions through a model-independent binned technique, based on fits to the K − K + K + invariant-mass distributions, with a total of 0.97 (1.27) million Ds+ (D +) signal candidates. The results are given as p-values for the hypothesis of CP conservation and are found to be 13.3% for the Ds+ → K − K + K + decay and 31.6% for the D + → K − K + K + decay. No evidence for CP violation is observed in these decays. [Figure not available: see fulltext.]

Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). Search for CP violation in D(s)+ → K− K+ K+ decays. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7) [10.1007/JHEP07(2023)067].

Search for CP violation in D(s)+ → K− K+ K+ decays

Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Kirsebom V. S.;Martinazzoli L.;Martinelli M.;Meloni S.;Minotti A.;Petruzzo M.;Pizzichemi M.;Salomoni M.;Shields E. B.;
2023

Abstract

A search for direct CP violation in the Cabibbo-suppressed decay Ds+ → K − K + K + and in the doubly Cabibbo-suppressed decay D + → K − K + K + is reported. The analysis is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb −1. The search is conducted by comparing the D(s)+ and D(s)− Dalitz-plot distributions through a model-independent binned technique, based on fits to the K − K + K + invariant-mass distributions, with a total of 0.97 (1.27) million Ds+ (D +) signal candidates. The results are given as p-values for the hypothesis of CP conservation and are found to be 13.3% for the Ds+ → K − K + K + decay and 31.6% for the D + → K − K + K + decay. No evidence for CP violation is observed in these decays. [Figure not available: see fulltext.]
Articolo in rivista - Articolo scientifico
Charm Physics; CP Violation; Flavour Physics; Hadron-Hadron Scattering;
English
7-lug-2023
2023
2023
7
67
none
Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). Search for CP violation in D(s)+ → K− K+ K+ decays. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7) [10.1007/JHEP07(2023)067].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/455678
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