About: Direct Photon Production in Proton-Nucleus and Nucleus-Nucleus Collisions     Goto   Sponge   NotDistinct   Permalink

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Description
  • Prompt photons produced in a hard reaction are not accompanied with any final state interaction, either energy loss or absorption. Therefore, besides the Cronin enhancement at medium transverse momenta pT and small isotopic corrections at larger pT, one should not expect any nuclear effects. However, data from PHENIX experiment exhibits a significant large-pT suppression in central d+Au and Au+Au collisions that cannot be accompanied by coherent phenomena. We demonstrate that such an unexpected result is subject to the energy sharing problem near the kinematic limit and is universally induced by multiple initial state interactions.
  • Prompt photons produced in a hard reaction are not accompanied with any final state interaction, either energy loss or absorption. Therefore, besides the Cronin enhancement at medium transverse momenta pT and small isotopic corrections at larger pT, one should not expect any nuclear effects. However, data from PHENIX experiment exhibits a significant large-pT suppression in central d+Au and Au+Au collisions that cannot be accompanied by coherent phenomena. We demonstrate that such an unexpected result is subject to the energy sharing problem near the kinematic limit and is universally induced by multiple initial state interactions. (en)
Title
  • Direct Photon Production in Proton-Nucleus and Nucleus-Nucleus Collisions
  • Direct Photon Production in Proton-Nucleus and Nucleus-Nucleus Collisions (en)
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  • Direct Photon Production in Proton-Nucleus and Nucleus-Nucleus Collisions
  • Direct Photon Production in Proton-Nucleus and Nucleus-Nucleus Collisions (en)
skos:notation
  • RIV/68407700:21340/11:00182765!RIV13-MSM-21340___
http://linked.open...avai/riv/aktivita
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  • P(LA08015), P(LC07048), S, Z(MSM6840770039)
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  • 194757
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  • RIV/68407700:21340/11:00182765
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  • direct photons; Cronin enhancement; large-pT suppression; energy sharing (en)
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  • [A482F8408F77]
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  • Nemčík, Ján
  • Čepila, Jan
http://linked.open...n/vavai/riv/zamer
http://bibframe.org/vocab/doi
  • 10.1016/j.nuclphysa.2011.06.004
http://localhost/t...ganizacniJednotka
  • 21340
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