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dc.contributor.authorSirunyan, A.M.
dc.contributor.authorChatrchyan, S. A.
dc.contributor.authorKhachatryan, Vardan
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorWolfgang, Adam
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorDorney, B.
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorKalakhety, H.
dc.contributor.authorVodopiyanov, Igor B.
dc.date.accessioned2018-01-05T20:52:26Z
dc.date.available2018-01-05T20:52:26Z
dc.date.issued2012-11-26
dc.identifier.citationChatrchyan, S., Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Aguilo, E., . . . Swanson, J. (2012). Observation of sequential Υ suppression in PbPb collisions. Physical Review Letters, 109(22)en_US
dc.identifier.urihttp://hdl.handle.net/11141/2251
dc.descriptionMass spectrometry, Tellurium compounds, Center-of-mass energies, Confidence levels, Data sets, Integrated luminosity, Invariant-mass spectra, Nucleon-nucleon collisions, Pb-Pb collisions, Nuclear physicsen_US
dc.description.abstractThe suppression of the individual ðnSÞ states in PbPb collisions with respect to their yields in pp data has been measured. The PbPb and pp data sets used in the analysis correspond to integrated luminosities of 150 b 1 and 230 nb 1, respectively, collected in 2011 by the CMS experiment at the LHC, at a center-of-mass energy per nucleon pair of 2.76 TeV. The ðnSÞ yields are measured from the dimuon invariant mass spectra. The suppression of the ðnSÞ yields in PbPb relative to the yields in pp, scaled by the number of nucleon-nucleon collisions, RAA, is measured as a function of the collision centrality. Integrated over centrality, the RAA values are 0:56 0:08ðstatÞ 0:07ðsystÞ, 0:12 0:04ðstatÞ 0:02ðsystÞ, and lower than 0.10 (at 95% confidence level), for the ð1SÞ, ð2SÞ, and ð3SÞ states, respectively. The results demonstrate the sequential suppression of the ðnSÞ states in PbPb collisions at LHC energies. DOen_US
dc.language.isoen_USen_US
dc.rights© 2015 American Physical Society (APS)en_US
dc.rights.urihttps://journals.aps.org/authors/transfer-of-copyright-agreementen_US
dc.titleObservation of sequential Υ suppression in PbPb collisionsen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevLett.109.222301


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