Show simple item record

dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2020-11-21T09:45:32Z
dc.date.accessioned2023-10-02T06:25:43Z
dc.date.available2020-11-21T09:45:32Z
dc.date.available2023-10-02T06:25:43Z
dc.date.created2012
dc.date.issued2012-02-24
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3093
dc.description.abstractMeasurements of b hadron production ratios in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of 3  pb−1 are presented. We study the ratios of strange B meson to light B meson production fs/(fu+fd) and Λ0b baryon to light B meson production fΛb/(fu+fd) as a function of the charmed hadron-muon pair transverse momentum pT and the b hadron pseudorapidity η, for pT between 0 and 14 GeV and η between 2 and 5. We find that fs/(fu+fd) is consistent with being independent of pT and η, and we determine fs/(fu+fd)=0.134±0.004+0.011−0.010, where the first error is statistical and the second systematic. The corresponding ratio fΛb/(fu+fd) is found to be dependent upon the transverse momentum of the charmed hadron-muon pair, fΛb/(fu+fd)=(0.404±0.017(stat)±0.027(syst)±0.105(Br))×[1−(0.031±0.004(stat)±0.003(syst))×pT(GeV)], where Br reflects an absolute scale uncertainty due to the poorly known branching fraction B(Λ+c→pK−π+). We extract the ratio of strange B meson to light neutral B meson production fs/fd by averaging the result reported here with two previous measurements derived from the relative abundances of ¯¯¯B0s→D+sπ− to ¯¯¯B0→D+K− and ¯¯¯B0→D+π−. We obtain fs/fd=0.267+0.021−0.020.
dc.format.extent16 p.cat
dc.language.isoengcat
dc.publisherAmerican Physical Societycat
dc.relation.ispartofPhysiccal Review D , 2012, Vol. 85, No.3 (Febrer)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.otherCol·lisions (Física nuclear)cat
dc.subject.otherProtonscat
dc.titleMeasurement of b hadron production fractions in 7 TeV pp collisionscat
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/10.1103/PhysRevD.85.032008cat


Files in this item

 

This item appears in the following Collection(s)

Show simple item record

Attribution 4.0 International
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/
Share on TwitterShare on LinkedinShare on FacebookShare on TelegramShare on WhatsappPrint