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- W2252281887 abstract "Debye screening of inter-quark potentials leading to suppression of heavy quarkonia has long been a studied signature of the onset of partonic deconnement. We report on the production of (1S+2S+3S) mesons at p s NN = 200 GeV in p + p , d + Au, and Au + Au collisions as measured by the Solenoidal Tracker At RHIC. We compare our measured yield in p + p collisions to those in d + Au and Au + Au collisions to obtain nuclear modication factors and quantify suppression eects from both hot and cold nuclear matter. We separate our Au + Au measurements into three centrality classes. We obtain a nuclear modication factor for (1S+2S+3S) in the rapidity range j y j < 1 in d + Au collisions of R d Au = 0 : 79 0 : 24(stat : ) 0 : 03(sys : ) 0 : 10( p + p sys : ). A comparison with models including shadowing and initial-state parton energy loss as well as nal- state nuclear absorption indicates the presence of additional cold-nuclear matter suppression. In the top 10% most-central Au + Au collisions, we measure a nuclear modication factor of R AA = 0 : 49 0 : 1(stat : ) 0 : 02(sys : ) 0 : 06( p + p sys : ), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of the excited (2S+3S) states and we calculate an upper limit of R AA (2S + 3S) < 0 : 32 with 95% condence for the 0-60% centrality bin. The additional suppression seen in Au + Au collisions is consistent with model calculations using initial temperatures ranging from 330 to 442 MeV. However, a better understanding of the suppression seen in d + Au collisions is needed before any denitive statements about suppression in Au + Au collisions can be made." @default.
- W2252281887 created "2016-06-24" @default.
- W2252281887 creator A5039167608 @default.
- W2252281887 date "2014-01-01" @default.
- W2252281887 modified "2023-09-27" @default.
- W2252281887 title "Upsilon Production and Suppression as Measured by STAR in p + p, d + Au, and Au + Au Collisions at √sNN = 200 GeV" @default.
- W2252281887 hasPublicationYear "2014" @default.
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