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A search for time-integrated CP violation in D0 -> h- h+ decays

The preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi-...

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Autor principal: Charles, M.J.
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:https://dx.doi.org/10.1051/epjconf/20122804007
http://cds.cern.ch/record/1420457
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author Charles, M.J.
author_facet Charles, M.J.
author_sort Charles, M.J.
collection CERN
description The preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi- decay chains. The difference in CP asymmetry between D0 -> K- K+ and D0 -> pi- pi+, Delta ACP = ACP(K- K+) - ACP(pi- pi+), is measured to be Delta ACP = [ -0.82 +- 0.21 (stat.) +- 0.11 (syst.) ] %. This differs from the hypothesis of CP conservation by 3.5 sigma.
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spelling cern-14204572023-03-15T19:12:36Zdoi:10.1051/epjconf/20122804007http://cds.cern.ch/record/1420457engCharles, M.J.A search for time-integrated CP violation in D0 -> h- h+ decaysParticle Physics - ExperimentThe preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi- decay chains. The difference in CP asymmetry between D0 -> K- K+ and D0 -> pi- pi+, Delta ACP = ACP(K- K+) - ACP(pi- pi+), is measured to be Delta ACP = [ -0.82 +- 0.21 (stat.) +- 0.11 (syst.) ] %. This differs from the hypothesis of CP conservation by 3.5 sigma.The preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi- decay chains. The difference in CP asymmetry between D0 -> K- K+ and D0 -> pi- pi+, Delta ACP = ACP(K- K+) - ACP(pi- pi+), is measured to be Delta ACP = [ -0.82 +- 0.21 (stat.) +- 0.11 (syst.) ] %. This differs from the hypothesis of CP conservation by 3.5 sigma.arXiv:1201.6268oai:cds.cern.ch:14204572012-01-31
spellingShingle Particle Physics - Experiment
Charles, M.J.
A search for time-integrated CP violation in D0 -> h- h+ decays
title A search for time-integrated CP violation in D0 -> h- h+ decays
title_full A search for time-integrated CP violation in D0 -> h- h+ decays
title_fullStr A search for time-integrated CP violation in D0 -> h- h+ decays
title_full_unstemmed A search for time-integrated CP violation in D0 -> h- h+ decays
title_short A search for time-integrated CP violation in D0 -> h- h+ decays
title_sort search for time-integrated cp violation in d0 -> h- h+ decays
topic Particle Physics - Experiment
url https://dx.doi.org/10.1051/epjconf/20122804007
http://cds.cern.ch/record/1420457
work_keys_str_mv AT charlesmj asearchfortimeintegratedcpviolationind0hhdecays
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