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dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorLHCb Collaboration - CERN
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorGolobardes, Elisabet
dc.contributor.authorVilasís Cardona, Xavier
dc.date.accessioned2021-07-26T12:49:41Z
dc.date.accessioned2023-10-02T06:25:08Z
dc.date.available2021-07-26T12:49:41Z
dc.date.available2023-10-02T06:25:08Z
dc.date.issued2021-03
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3051
dc.description.abstractThe time-dependent CP asymmetries of B0 → π+π− and B0s → K+K− decays are measured using a data sample of pp collisions corresponding to an integrated luminosity of 1.9 fb−1, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. The results are: ππ=−0.311±0.045±0.015 Sππ=−0.706±0.042±0.013 CKK=0.123±0.034±0.015 SKK=0.164±0.034±0.014 AΔΓKK=−0.83±0.05±0.09 where the first uncertainties are statistical and the second systematic. The same data sample is used to measure the time-integrated CP asymmetries of B0 → K + π− and B0s → K−π+ decays and the results are: B0CP=−0.0824±0.0033±0.0033 AB0sCP=0.236±0.013±0.011 All results are consistent with earlier measurements. A combination of LHCb measurements provides the first observation of time-dependent CP violation in B0s decays.eng
dc.format.extent43 p.cat
dc.language.isoengcat
dc.publisherSpringercat
dc.relation.ispartofJournal of High Energy Physics, 2021, No. 75cat
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.subject.otherProtonscat
dc.subject.otherPartícules (Física nuclear)cat
dc.titleObservation of CP violation in two-body B0(s) -meson decays to charged pions and kaonscat
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


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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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