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.;Borsato M.;Calvi M.;Carniti P.;Cassina L.;Fazzini D.;Gotti C.;Martinelli M.;Petruzzo 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
2019
2
126
open
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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