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dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorAbellan Beteta, Carlos
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorDomingo Bonal, Francesc
dc.contributor.authorRoselló Canal, Mar
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2021-05-07T04:53:06Z
dc.date.accessioned2023-10-02T06:47:41Z
dc.date.available2021-05-07T04:53:06Z
dc.date.available2023-10-02T06:47:41Z
dc.date.issued2012-09
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3478
dc.description.abstractThe ratio of branching fractions of the radiative B decays B0→K∗0γ andB0s→φγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of √s=7 TeV. The value obtained is B(B0→K∗0γ)B(B0s→φγ )=1.23±0.06 (stat.)±0.04 (syst.)±0.10(fs/fd), where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the thirdis associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K∗0γ), the branching fractionB(B0s→φγ ) is measured to be(3.5±0.4)×10−5.The direct CP asymmetry in B0→K∗0γ decays has also been measured with the same data and found to be ACP(B0→K∗0γ)=(0.8±1.7(stat.)±0.9 (syst.))%. Both measurements are the most precise to date and are in agreement with the previous experimentalresults and theoretical expectations.eng
dc.format.extent18 p.cat
dc.language.isoengcat
dc.publisherElseviercat
dc.relation.ispartofNuclear Physics B, 2012, Vol. 867cat
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights© CERN
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/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.otherCol·lisions (Física nuclear)cat
dc.subject.otherPartícules (Física nuclear)cat
dc.titleMeasurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γcat
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/10.1016/j.nuclphysb.2012.09.013cat


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