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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.accessioned2020-11-19T13:38:03Z
dc.date.accessioned2023-10-02T06:27:14Z
dc.date.available2020-11-19T13:38:03Z
dc.date.available2023-10-02T06:27:14Z
dc.date.created2014
dc.date.issued2014-04-16
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3167
dc.description.abstractMeasurements of b-hadron lifetimes are reported using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb detector at a centre-of-mass energy of 7 TeV. Using the exclusive decays B + → J/ψK +, B 0 → J/ψK ∗(892)0, B0→J/ψK0s, Λ0b→J/ψΛ and B0s→J/ψϕ the average decay times in these modes are measured to be $ τB+→J/ψK+=1.637±0.004±0.003ps,τB0→J/ψK∗0=1.524±0.006±0.004ps,τB0→J/ψK0s=1.499±0.013±0.005ps,τΛ0b→J/ψΛ=1.415±0.027±0.006ps,τB0s→J/ψϕ=1.480±0.011±0.005ps, $ where the first uncertainty is statistical and the second is systematic. These represent the most precise lifetime measurements in these decay modes. In addition, ratios of these lifetimes, and the ratio of the decay-width difference, ΔΓ d , to the average width, Γ d , in the B 0 system, ΔΓ d /Γ d = −0.044 ± 0.025 ± 0.011, are reported. All quantities are found to be consistent with Standard Model expectations.eng
dc.format.extent26 p.
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of High Energy Physics, 2014, Vol. 2014, No.a (Abril)
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)
dc.subject.otherPartícules (Física nuclear)
dc.subject.otherCol·lisions (Física nuclear)
dc.titleMeasurements of the B +, B 0, B0s meson and Λ0b baryon lifetimes
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscap
dc.subject.udc539
dc.identifier.doihttps://doi.org/10.1007/JHEP04(2014)114


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Attribution 4.0 International
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