TY - JOUR
T1 - Observations on dA scattering at forward rapidities
AU - Guzey, V.
AU - Strikman, M.
AU - Vogelsang, W.
N1 - Funding Information:
We are grateful to D. de Florian, B. Jäger, and M. Stratmann for valuable help, and to L. Frankfurt, D. Kharzeev, S. Kretzer, K. Tuchin, and R. Venugopalan for useful discussions and comments. V.G. is supported by Sofia Kovalevskaya Program of the Alexander von Humboldt Foundation. M.S.'s research was supported by the DOE grant No. DE-FG02-93ER40771. W.V. is grateful to RIKEN, Brookhaven National Laboratory and the US Department of Energy (contract number DE-AC02-98CH10886) for providing the facilities essential for the completion of this work.
PY - 2004/12/9
Y1 - 2004/12/9
N2 - We point out that the suppression in the ratio R dAu recently observed by the BRAHMS Collaboration in forward scattering is stronger than usually appreciated. This is related to the fact that at forward rapidities BRAHMS measures negatively charged hadrons and that R dAu is defined from the ratio of dA and pp scattering cross sections. We also investigate the influence of standard shadowing on R dAu, and the typical values of partonic momentum fractions relevant in forward scattering. We find that x Au≥0.02 dominate in the cross section.
AB - We point out that the suppression in the ratio R dAu recently observed by the BRAHMS Collaboration in forward scattering is stronger than usually appreciated. This is related to the fact that at forward rapidities BRAHMS measures negatively charged hadrons and that R dAu is defined from the ratio of dA and pp scattering cross sections. We also investigate the influence of standard shadowing on R dAu, and the typical values of partonic momentum fractions relevant in forward scattering. We find that x Au≥0.02 dominate in the cross section.
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U2 - 10.1016/j.physletb.2004.10.033
DO - 10.1016/j.physletb.2004.10.033
M3 - Article
AN - SCOPUS:8444228992
SN - 0370-2693
VL - 603
SP - 173
EP - 183
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -