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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.accessioned2020-06-19T17:43:46Z
dc.date.accessioned2023-10-02T06:31:52Z
dc.date.available2020-06-19T17:43:46Z
dc.date.available2023-10-02T06:31:52Z
dc.date.created2014
dc.date.issued2014-04-22
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3284
dc.description.abstractThis Letter presents a study of the flavor-changing neutral current radiative B±→K±π∓π±γ decays performed using data collected in proton-proton collisions with the LHCb detector at 7 and 8 TeV center-of-mass energies. In this sample, corresponding to an integrated luminosity of 3  fb−1, nearly 14 000 signal events are reconstructed and selected, containing all possible intermediate resonances with a K±π∓π± final state in the [1.1,1.9]  GeV/c2 mass range. The distribution of the angle of the photon direction with respect to the plane defined by the final-state hadrons in their rest frame is studied in intervals of K±π∓π± mass and the asymmetry between the number of signal events found on each side of the plane is obtained. The first direct observation of the photon polarization in the b→sγ transition is reported with a significance of 5.2σ.eng
dc.format.extent8 p.cat
dc.language.isoengcat
dc.publisherAmerican Physical Societycat
dc.relation.ispartofPhysical Review Letters, 2014, Vol. 112, No. 16 (Abril)cat
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.otherPartícules (Física nuclear)cat
dc.subject.otherProtonscat
dc.subject.otherCol·lisions (Física nuclear)cat
dc.titleObservation of Photon Polarization in the b→sγ Transitioncat
dc.typeinfo:eu-repo/semantics/articlecat
dc.typeinfo:eu-repo/semantics/publishedVersioncat
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapcat
dc.subject.udc53
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.112.161801cat


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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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