Observation of a New Ξb Baryon

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dc.citation.firstpage252002en_US
dc.citation.issueNumber25en_US
dc.citation.journalTitlePhysical Review Lettersen_US
dc.citation.volumeNumber108en_US
dc.contributor.authorAdair, A.en_US
dc.contributor.authorBoulahouache, C.en_US
dc.contributor.authorEcklund, K.M.en_US
dc.contributor.authorGeurts, F.J.M.en_US
dc.contributor.authorPadley, B.P.en_US
dc.contributor.authorRedjimi, R.en_US
dc.contributor.authorRoberts, J.en_US
dc.contributor.authorZabel, J.en_US
dc.date.accessioned2015-09-03T14:48:30Zen_US
dc.date.available2015-09-03T14:48:30Zen_US
dc.date.issued2012en_US
dc.description.abstractThe observation of a new b baryon via its strong decay into Ξ−bπ+ (plus charge conjugates) is reported. The measurement uses a data sample of pp collisions at √s=7  TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3  fb−1. The known Ξ−b baryon is reconstructed via the decay chain Ξ−b→J/ψΞ−→μ+μ−Λ0π−, with Λ0→pπ−. A peak is observed in the distribution of the difference between the mass of the Ξ−bπ+ system and the sum of the masses of the Ξ−b and π+, with a significance exceeding 5 standard deviations. The mass difference of the peak is 14.84±0.74(stat)±0.28(syst)  MeV. The new state most likely corresponds to the JP=3/2+ companion of the Ξb.en_US
dc.identifier.citationAdair, A., Boulahouache, C., Ecklund, K.M., et al.. "Observation of a New Ξb Baryon." <i>Physical Review Letters,</i> 108, no. 25 (2012) American Physical Society: 252002. http://dx.doi.org/10.1103/PhysRevLett.108.252002.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevLett.108.252002en_US
dc.identifier.urihttps://hdl.handle.net/1911/81620en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en_US
dc.titleObservation of a New Ξb Baryonen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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