Measurement of Υ(1S+2S+3S) production in p+p and Au + Au collisions at √sNN=200 GeV

, Itzhak Tserruya

Research output: Contribution to journalArticlepeer-review

Abstract

Measurements of bottomonium production in heavy-ion and p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The inclusive yield of the three Υ states, Υ(1S+2S+3S), was measured in the PHENIX experiment via electron-positron decay pairs at midrapidity for Au+Au and p+p collisions at sNN=200 GeV. The Υ(1S+2S+3S)→e+e- differential cross section at midrapidity was found to be Beedσ/dy=108±38(stat)±15(syst)±11(luminosity) pb in p+p collisions. The nuclear modification factor in the 30% most central Au+Au collisions indicates a suppression of the total Υ state yield relative to the extrapolation from p+p collision data. The suppression is consistent with measurements made by STAR at RHIC and at higher energies by the CMS experiment at the Large Hadron Collider.

Original languageEnglish
Article number024913
JournalPhysical Review C
Volume91
Issue number2
DOIs
StatePublished - 24 Feb 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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