A measurement of time-dependent CP violation in D0→π+π-π0 decays using a pp collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb-1, is presented. The initial flavor of each D0 candidate is determined from the charge of the pion produced in the D∗(2010)+→D0π+ decay. The decay D0→K-π+π0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent CP asymmetry ΔY in D0→π+π-π0 decays is measured to be ΔY=(-1.3±6.3±2.4)×10-4, where the first uncertainty is statistical and the second is systematic, which is compatible with CP conservation.

Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen, F., Ackernley, T., Adefisoye, A., et al. (2024). Search for Time-Dependent CP Violation in D0 →π+π-π0 Decays. PHYSICAL REVIEW LETTERS, 133(10) [10.1103/PhysRevLett.133.101803].

Search for Time-Dependent CP Violation in D0 →π+π-π0 Decays

Anelli A.;Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Gotti C.;Kirsebom V. S.;Malentacca L.;Martinazzoli L.;Martinelli M.;Minotti A.;Pizzichemi M.;Salomoni M.;Shields E. B.;
2024

Abstract

A measurement of time-dependent CP violation in D0→π+π-π0 decays using a pp collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb-1, is presented. The initial flavor of each D0 candidate is determined from the charge of the pion produced in the D∗(2010)+→D0π+ decay. The decay D0→K-π+π0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent CP asymmetry ΔY in D0→π+π-π0 decays is measured to be ΔY=(-1.3±6.3±2.4)×10-4, where the first uncertainty is statistical and the second is systematic, which is compatible with CP conservation.
Articolo in rivista - Articolo scientifico
Control channels; CP violations; Data sample; Integrated luminosity; Measurement procedures; Measurements of; Time dependent; Time-dependent CP asymmetry; Uncertainty
English
5-set-2024
2024
133
10
101803
none
Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen, F., Ackernley, T., Adefisoye, A., et al. (2024). Search for Time-Dependent CP Violation in D0 →π+π-π0 Decays. PHYSICAL REVIEW LETTERS, 133(10) [10.1103/PhysRevLett.133.101803].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/526205
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