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dc.contributor.authorKhachatryan, Vardan
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorWolfgang, Adam
dc.contributor.authorBergauer, Thomas
dc.contributor.authorDragicevic, Marko
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorKalakhety, H.
dc.contributor.authorYumiceva, Francisco X.
dc.date.accessioned2018-01-05T19:51:04Z
dc.date.available2018-01-05T19:51:04Z
dc.date.issued2014-12-31
dc.identifier.citationKhachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., . . . Woods, N. (2014). Measurement of prompt ψ (2S) to J /ψ yield ratios in pb-pb and p - p collisions at sNN =2.76 TeV. Physical Review Letters, 113(26)en_US
dc.identifier.urihttp://hdl.handle.net/11141/2246
dc.descriptionTellurium compound, Forward rapidity, Integrated luminosity, Kinematic range, Large Hadron Collider, Mid-rapidity, Pb-Pb collisions, Transverse momenta, Yield ratios, Leaden_US
dc.description.abstractThe ratio between the prompt ψð2SÞ and J=ψ yields, reconstructed via their decays into μþμ−, is measured in Pb-Pb and p-p collisions at ffiffiffiffiffiffiffiffi sNN p ¼ 2.76 TeV. The analysis is based on Pb-Pb and p-p data samples collected by CMS at the Large Hadron Collider, corresponding to integrated luminosities of 150 μb−1 and 5.4 pb−1, respectively. The double ratio of measured yields ðNψð2SÞ=NJ=ψ ÞPb-Pb= ðNψð2SÞ=NJ=ψ Þp-p is computed in three Pb-Pb collision centrality bins and two kinematic ranges: one at midrapidity, jyj < 1.6, covering the transverse momentum range 6.5 < pT < 30 GeV=c, and the other at forward rapidity, 1.6 < jyj < 2.4, extending to lower pT values, 3 < pT < 30 GeV=c. The centralityintegrated double ratio changes from 0.45 0.13ðstatÞ 0.07ðsystÞ in the first range to 1.67 0.34ðstatÞ 0.27ðsystÞ in the second. This difference is most pronounced in the most central collisions. 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.titleMeasurement of prompt ψ (2S) to J /ψ yield ratios in Pb-Pb and p - p collisions at sNN =2.76 TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevLett.113.262301


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