TY - JOUR
T1 - Nuclear effects in prompt photon production at the Large Hadron Collider
AU - Jalilian-Marian, J.
AU - Orginos, K.
AU - Sarcevic, I.
N1 - Funding Information:
We would like to thank P. Aurenche and M. Werlen for providing us with the Fortran routines for calculating double differential distributions for photon production in hadronic collisions and for many useful discussions. J.J.-M. would like to thank S. Jeon, M. Tannenbaum and X.-N. Wang for many helpful discussions. J.J.-M. is grateful to LBNL nuclear theory group for the use of their computing resources. This work was supported in part through US Department of Energy Grants Nos. DE-FG03-93ER40792 and DE-FG02-95ER40906.
PY - 2002/3/25
Y1 - 2002/3/25
N2 - We present a detailed study of prompt photon production cross section in heavy-ion collisions in the central rapidity region at energy of √s = 5.5 TeV, appropriate to LHC experiment. We include the next-to-leading order radiative corrections, O(αemα2s), nuclear shadowing and the parton energy-loss effects. We find that the nuclear effects can reduce the invariant cross section for prompt photon production by an order of magnitude at pt = 3 GeV. We discuss theoretical uncertainties due to parton energy loss and nuclear shadowing parameters. We show that the K-factor, which signifies the importance of next-to-leading order corrections, is large and has a strong pt dependence.
AB - We present a detailed study of prompt photon production cross section in heavy-ion collisions in the central rapidity region at energy of √s = 5.5 TeV, appropriate to LHC experiment. We include the next-to-leading order radiative corrections, O(αemα2s), nuclear shadowing and the parton energy-loss effects. We find that the nuclear effects can reduce the invariant cross section for prompt photon production by an order of magnitude at pt = 3 GeV. We discuss theoretical uncertainties due to parton energy loss and nuclear shadowing parameters. We show that the K-factor, which signifies the importance of next-to-leading order corrections, is large and has a strong pt dependence.
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U2 - 10.1016/S0375-9474(01)01309-4
DO - 10.1016/S0375-9474(01)01309-4
M3 - Article
AN - SCOPUS:0037170727
VL - 700
SP - 523
EP - 538
JO - Nuclear Physics A
JF - Nuclear Physics A
SN - 0375-9474
IS - 1-2
ER -