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Measurement of Υ(1S+2S+3S) production in p+p and Au + Au collisions at sqrt(s_NN)=200 GeV (CROSBI ID 226423)

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(PHENIX Collaboration) Adare, A. ; ... ; Makek, Mihael ; ... ; Zolin, L. Measurement of Υ(1S+2S+3S) production in p+p and Au + Au collisions at sqrt(s_NN)=200 GeV // Physical review. C, Nuclear physics, 91 (2015), 2; 024913, 16. doi: 10.1103/PhysRevC.91.024913

Podaci o odgovornosti

Adare, A. ; ... ; Makek, Mihael ; ... ; Zolin, L.

PHENIX Collaboration

engleski

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

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 sqrt(s_NN)=200 GeV. The Υ(1S+2S+3S)→e+e− differential cross section at midrapidity was found to be B_ee dσ/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.

QGP ; Quarkonia ; Upsilon ; Raa ; PHENIX

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Podaci o izdanju

91 (2)

2015.

024913

16

objavljeno

0556-2813

1089-490X

10.1103/PhysRevC.91.024913

Povezanost rada

Fizika

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