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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.accessioned2021-07-20T18:00:29Z
dc.date.accessioned2023-10-02T06:25:27Z
dc.date.available2021-07-20T18:00:29Z
dc.date.available2023-10-02T06:25:27Z
dc.date.issued2021-03
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3074
dc.description.abstractThe CKM angle γ is measured for the first time from mixing-induced CP violation between B0s→D∓sK±π±π∓ and B¯¯¯¯0s→D±sK∓π∓π± decays reconstructed in proton-proton collision data corresponding to an integrated luminosity of 9 fb−1 recorded with the LHCb detector. A time-dependent amplitude analysis is performed to extract the CP-violating weak phase γ − 2βs and, subsequently, γ by taking the B0s-B¯¯¯¯0s mixing phase βs as an external input. The measurement yields γ = (44 ± 12)° modulo 180°, where statistical and systematic uncertainties are combined. An alternative model-independent measurement, integrating over the five-dimensional phase space of the decay, yields γ=(44+20−13)∘ modulo 180°. Moreover, the B0s-B¯¯¯¯0s oscillation frequency is measured from the flavour-specific control channel B0s→D−sπ+π+π− to be ∆ms = (17.757 ± 0.007(stat) ± 0.008(syst)) ps−1, consistent with and more precise than the current world-average value.eng
dc.format.extent46 p.cat
dc.language.isoengcat
dc.publisherSpringercat
dc.relation.ispartofJournal of High Energy Physics, 2021, Vol.3, No. 137cat
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.otherPartícules (Física nuclear)cat
dc.subject.otherProtonscat
dc.titleMeasurement of the CKM angle γ and B0s-B¯¯¯¯0s mixing frequency with B0s→D∓sh±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


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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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