Direct photon production in d+Au collisions at sqrt(s_NN)=200 GeV

Abstract

Direct photons have been measured in sqrt(s_NN)=200 GeV d+Au collisions at midrapidity. A wide p_T range is covered by measurements of nearly-real virtual photons (1<p_T<6 GeV/c) and real photons (5<p_T<16 GeV/c). The invariant yield of the direct photons in d+Au collisions over the scaled p+p cross section is consistent with unity. Theoretical calculations assuming standard cold nuclear matter effects describe the data well for the entire p_T range. This indicates that the large enhancement of direct photons observed in Au+Au collisions for 1.0<p_T<2.5 GeV/c is due to a source other than the initial-state nuclear effects.

547 authors, 7 pages, 4 figures. Submitted to Phys. Rev. Lett.. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

References in corpus (11)

• Glauber Modeling in High Energy Nuclear Collisions
• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Common Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Centrality Dependence of pi^0 and eta Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d+Au Collisions
• Measurement of direct photon production in p + p collisions at sqrt(s) = 200 GeV
• A Detailed Study of High-pT Neutral Pion Suppression and Azimuthal Anisotropy in Au+Au Collisions at \sqrt{s_{NN}} = 200 GeV
• Measurement of Direct Photons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Nuclear Effects on Hadron Production in d+Au and p+p Collisions at sqrt(s_NN)=200 GeV
• A systematic study of direct photon production in heavy ion collisions
• Direct-Photon Production in p+p Collisions at sqrt(s)=200 GeV at Midrapidity
• J/psi suppression at forward rapidity in Au+Au collisions at sqrt(s_NN)=39 and 62.4 GeV

Cited by in corpus (38)

• Collectivity and electromagnetic radiation in small systems
• The smallest fluid on earth
• Direct real photons in relativistic heavy ion collisions
• Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions
• Can Tsallis distribution fit all the particle spectra produced at RHIC and LHC?
• Thermal photon radiation in high multiplicity p+Pb collisions at the Large Hadron Collider
• Direct photon production at low transverse momentum in proton-proton collisions at $\sqrt{s}$ = 2.76 and 8 TeV
• Geometrical Scaling of Direct-Photon Production in Hadron Collisions from RHIC to the LHC
• Jet charge modification in dense QCD matter
• Applicability of transverse mass scaling in hadronic collisions at the LHC
• Photon from the annihilation process with CGC in the $pA$ collision
• Measurement of prompt photon production in $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV $p$+Pb collisions with ATLAS
• Centrality dependence of inclusive prompt photon production in d+Au, Au+Au, p+Pb, and Pb+Pb collisions
• Nonprompt direct-photon production in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Low-momentum direct photon measurement in Cu$+$Cu collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Dielectron production in proton-proton collisions at $\sqrt{s}$ = 7 TeV
• New information on photon fragmentation functions
• Study of isolated prompt photon production in $p$-Pb collisions for the ALICE kinematics
• Disentangling centrality bias and final-state effects in the production of high-$p_T$ ${\pi }^0$ using direct $\gamma$ in $d$$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Photons and low-mass dileptons: results from PHENIX
• PHENIX measurements of low momentum direct photon radiation
• Contribution to differential ${\pi }^0$ and ${\gamma }_{\mathrm{dir}}$ modification in small systems from color fluctuation effects
• Photons from thermalizing matter in heavy ion collisions
• Prompt photon production in high-energy $pA$ collisions at forward rapidity
• Direct photon production in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV at STAR
• Highlights from BNL-RHIC 2011-2013
• Probing nuclear modifications of parton distribution functions through the isolated prompt photon production at the LHC
• Electromagnetic Radiation from QCD Matter: Theory Overview
• Direct Photons in Hydrodynamic Modeling of Relativistic Nuclear Collisions
• Predictions for the isolated prompt photon production at the LHC at $\sqrt{s}=$13 TeV
• Photon and dilepton production in high energy heavy ion collisions
• Direct photon production and jet energy-loss in small systems
• Direct-photon production in inelastic and high-multiplicity proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Overview of electromagnetic probes in ultra-relativistic heavy-ion collisions
• Prompt photon production and photon-hadron jet correlations with POWHEG
• The Strongly Interacting Quark Gluon Plasma at RHIC and LHC
• Highlights from BNL-RHIC-2012
• Shining a Light on the QGP - Electroweak Probes Experimental Summary