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dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorBadalov, Alexey
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2021-04-26T17:33:33Z
dc.date.accessioned2023-10-02T06:49:14Z
dc.date.available2021-04-26T17:33:33Z
dc.date.available2023-10-02T06:49:14Z
dc.date.created2014-05
dc.date.issued2014-07
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3494
dc.description.abstractTime-integrated CP asymmetries in D0 decays to the final states K−K+ and π −π + are measured using proton-proton collisions corresponding to 3 fb−1 of integrated luminosity collected at centre-of-mass energies of 7 TeV and 8 TeV. The D0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial flavour of the charm meson. The difference in CP asymmetries between the two final states is measured to be ∆ACP = ACP (K−K+) − ACP (π −π +) = (+0.14 ± 0.16 (stat) ± 0.08 (syst))% . A measurement of ACP (K−K+) is obtained assuming negligible CP violation in charm mixing and in Cabibbo-favoured D decays. It is found to be ACP (K−K+) = (−0.06 ± 0.15 (stat) ± 0.10 (syst))% , where the correlation coefficient between ∆ACP and ACP (K−K+) is ρ = 0.28. By combining these results, the CP asymmetry in the D0 → π −π + channel is ACP (π −π +) = (−0.20 ± 0.19 (stat) ± 0.10 (syst))%.eng
dc.format.extent25 p.cat
dc.language.isoengcat
dc.publisherSpringercat
dc.relation.ispartofJournal of High Energy Physics, 2014, No. 41cat
dc.rightsAttribution 4.0 International
dc.rights© CERN
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceRECERCAT (Dipòsit de la Recerca de Catalunya)
dc.subject.otherGran col·lisionador d'hadrons (França i Suïssa)cat
dc.subject.otherInteraccions d'hadronscat
dc.titleMeasurement of CP asymmetry in D0 → K−K+ and D0 → π −π + decayscat
dc.typeinfo:eu-repo/semantics/articlecat
dc.typeinfo:eu-repo/semantics/publishedVersioncat
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapcat
dc.subject.udc539
dc.identifier.doihttps://doi.org/10.1007/JHEP07(2014)041cat


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/
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