2015
DOI: 10.1103/physrevc.92.044909
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ϕmeson production ind+Aucollisions atsNN

Abstract: The PHENIX collaboration has measured φ meson production in d+Au collisions at √ s N N = 200 GeV using the dimuon and dielectron decay channels. The φ meson is measured in the forward (backward) d-going (Au-going) direction, 1.2 < y < 2.2 (−2.2 < y < −1.2) in the transversemomentum (pT ) range from 1-7 GeV/c, and at midrapidity |y| < 0.35 in the pT range below 7 GeV/c. The φ meson invariant yields and nuclear-modification factors as a function of pT , rapidity, and centrality are reported. An enhancement of φ … Show more

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Cited by 18 publications
(14 citation statements)
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“…The dilepton angular distribution in In-In collisions has been measured by the NA60 experiment [12] at the CERN-SPS in the primary kinematical range 0.4 < M l + l − < 0.9 GeV, in which production of dileptons by hadronic sources such as π + π − annihilation dominates Drell-Yan dileptons; the results are consistent with λ = µ = ν = 0. On the other hand, in ultrarelativistic heavy-ion collisions we expect the momentum-space anisotropy of the QGP to be detected most readily in dilepton production in the range 1 GeV < q T < 3 GeV and M l + l − < ∼ 0.3 GeV where the excess of direct photons is seen experimentally [1]. In this paper, we present a general framework for analyzing the angular distribution of dileptons emitted from a QGP, which can be used to extract quark and gluon momentum anisotropies in the collision.…”
Section: Introductionmentioning
confidence: 99%
See 2 more Smart Citations
“…The dilepton angular distribution in In-In collisions has been measured by the NA60 experiment [12] at the CERN-SPS in the primary kinematical range 0.4 < M l + l − < 0.9 GeV, in which production of dileptons by hadronic sources such as π + π − annihilation dominates Drell-Yan dileptons; the results are consistent with λ = µ = ν = 0. On the other hand, in ultrarelativistic heavy-ion collisions we expect the momentum-space anisotropy of the QGP to be detected most readily in dilepton production in the range 1 GeV < q T < 3 GeV and M l + l − < ∼ 0.3 GeV where the excess of direct photons is seen experimentally [1]. In this paper, we present a general framework for analyzing the angular distribution of dileptons emitted from a QGP, which can be used to extract quark and gluon momentum anisotropies in the collision.…”
Section: Introductionmentioning
confidence: 99%
“…Direct photons, both real and virtual, are an important probe of the dynamics of ultrarelativistic heavy-ion collisions. An average temperature of the quark-gluon plasma (QGP) formed in high-energy collisions has been extracted from the transverse momentum spectrum of direct photons in the range q T ∼ 1-3 GeV [1][2][3]. Theoretically, measurements of the photon polarization through the angular distribution of dileptons (l + l − ) have been proposed to provide information on the early stages of collisions, before the onset of thermalization [4][5][6].…”
Section: Introductionmentioning
confidence: 99%
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“…Newly published heavy flavor cross-section measurements in √ s NN = 200 GeV p+p and d+Au collisions were shown by the PHENIX experiment. [14] The cross-sections are obtained by fitting the dielectron…”
Section: Dilepton Continuum Measurementsmentioning
confidence: 99%
“…the Ultra Relativistic Quantum Molecular Dynamics Model (UrQMD) [2,3,4,5] was used to simulate the ion collisions. The calculated femtoscopic radii for Au+Au collisions were compared to the STAR [6] and PHENIX experimental data [7].…”
Section: Introductionmentioning
confidence: 99%