Observation of an Excited B_c ^{±} Meson State with the ATLAS Detector

dc.contributor.ORCID0000-0003-0867-2189 (Lou, X)
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdallah, J.en_US
dc.contributor.authorAbdel Khalek, S.en_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAben, R.en_US
dc.contributor.authorAbi, B.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorLeyton, Michaelen_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorNamasivayam, Harisankaren_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorLeyton, Michaelen_US
dc.contributor.utdAuthorNamasivayam, Harisankaren_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.date.accessioned2015-01-14T23:14:08Z
dc.date.available2015-01-14T23:14:08Z
dc.date.created2014-11-21en_US
dc.date.issued2014-11-21en_US
dc.description.abstractA search for excited states of theB(±)(c) meson is performed using 4.9 fb⁻¹ of 7 TeV and 19.2 fb⁻¹ of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay B(±)(c) → J/ψπ±. The state appears in the m(B(±)(c)π⁺π⁻) − mB(±)(c) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842 ±4±5  MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B(±)(c) meson, B(±)(c) (2S).en_US
dc.identifier.bibliographicCitationAad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, et al. 2014. "Observation of an excited B(±)(c) meson state with the ATLAS detector." Physical Review Letters 113(21): 212004.en_US
dc.identifier.issn1079-7114en_US
dc.identifier.issue21en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4267
dc.identifier.volume113en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevLett.113.212004
dc.rightsCC BY 3.0 (Attribution)en_US
dc.rights©2014 CERN for the ATLAS Collaborationen_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en_US
dc.sourcePhysical Review Letters
dc.subjectB mesonsen_US
dc.subjectUnbinned maximum likelihooden_US
dc.subjectProton-proton interactionsen_US
dc.titleObservation of an Excited B_c ^{±} Meson State with the ATLAS Detectoren_US
dc.typeTexten_US
dc.type.genreArticleen_US

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