A search for CP violation in the Cabibbo-suppressed D 0 → K + K − π + π − decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb −1 . The D 0 mesons are reconstructed from semileptonic b-hadron decays into D 0 μ − X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D 0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered.[Figure not available: see fulltext.]

Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., et al. (2019). Search for CP violation through an amplitude analysis of D0 → K+ K− π+ π− decays. JOURNAL OF HIGH ENERGY PHYSICS, 2019(2) [10.1007/JHEP02(2019)126].

Search for CP violation through an amplitude analysis of D0 → K+ K− π+ π− decays

Belloli N.;Calvi M.;Carniti P.;Cassina L.;Fazzini D.;Gotti C.;Martinelli M.;
2019

Abstract

A search for CP violation in the Cabibbo-suppressed D 0 → K + K − π + π − decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb −1 . The D 0 mesons are reconstructed from semileptonic b-hadron decays into D 0 μ − X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D 0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered.[Figure not available: see fulltext.]
Articolo in rivista - Articolo scientifico
Charm physics; CP violation; Flavor physics; Hadron-Hadron scattering (experiments)
English
2019
Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., et al. (2019). Search for CP violation through an amplitude analysis of D0 → K+ K− π+ π− decays. JOURNAL OF HIGH ENERGY PHYSICS, 2019(2) [10.1007/JHEP02(2019)126].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/242898
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