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.

Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, 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), 0-24 [10.1007/jhep07(2023)067].

Search for CP Violation in D(s)+ → K− K+ K+ Decays

Carbone, A.;Ferrari, F.;Galli, D.;Manuzzi, D.;Patrignani, C.;Spedicato, E.;Villa, A.;Zucchelli, S.;
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.
2023
Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, 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), 0-24 [10.1007/jhep07(2023)067].
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/952030
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