Abstract.
Dilepton production is investigated in proton-nucleus collisions in the forward region using the color glass condensate approach. The transverse momentum distribution (pT), more precisely the ratio between proton-nucleus and proton-proton differential cross section for LHC energies is evaluated, showing the effects of saturation at small pT, and presenting a suppression of the Cronin type peak at moderate pT. These features indicate the dilepton as the most suitable probe to study the properties of the saturated regime and the Cronin effect in these systems.
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D. Kharzeev, E. Levin, Phys. Lett. B 523, 79 (2001); D. Kharzeev, E. Levin, L. McLerran, Phys. Lett. B 561, 93 (2003)
Y.V. Kovchegov, A.H. Mueller, Nucl. Phys. B 529, 451 (1998)
L.V. Gribov, E.M. Levin, M.G. Ryskin, Phys. Rep. 100, 1 (1983)
A.L. Ayala, M.B. Gay Ducati, E.M. Levin, Nucl. Phys. B 493, 305 (1997); B 511, 355 (1998)
A.L. Ayala, M.B. Gay Ducati, E.M. Levin, Phys. Lett. B 388, 188 (1996)
L. McLerran, R. Venugopalan, Phys. Rev. D 49, 2233 (1994); D 49, 3352 (1994)
J. Jalilian-Marian, A. Kovner, A. Leonidov, H. Weigert, Nucl. Phys. B 504, 415 (1997); Phys. Rev. D 59, 014014 (1999)
E. Iancu, A. Leonidov, L.D. McLerran, Nucl. Phys. A 692, 583 (2001); Phys. Lett. B 510, 133 (2001)
E. Ferreiro, E. Iancu, A. Leonidov, L. McLerran, Nucl. Phys. A 703, 489 (2002)
E. Iancu, R. Venugopalan, hep-ph/0303204
E. Iancu, K. Itakura, L. McLerran, Nucl. Phys. A 724, 181 (2003)
F. Gelis, A. Peshier, Nucl. Phys. A 697, 879 (2002)
E. Iancu, K. Itakura, L. McLerran, Nucl. Phys. A 724, 181 (2003)
J.P. Blaizot, F. Gelis, R. Venugopalan, Nucl. Phys. A 743, 13 (2004)
M.A. Betemps, M.B. Gay Ducati, Phys. Rev. D 70, 116005 (2004)
B.Z. Kopeliovich, in Proceedings Workshop Hirschegg’95: Dynamical Properties of Hadrons in Nuclear Matter, edited by H. Feldmeier, W. Nörenberg, GSI, Darmstadt, p. 102 (1995) [hep-ph/9609385]; S.J. Brodsky, A. Hebecker, E. Quack, Phys. Rev. D 55, 2584 (1997)
B.Z. Kopeliovich, J. Raufeisen, A.V. Tarasov, Phys. Lett. B 503, 91 (2001)
F. Gelis, J. Jalilian-Marian, Phys. Rev. D 66, 094014 (2002)
J. Pumplin, D.R. Stump, J. Huston, H.L. Lai, P. Nadolsky, W.K. Tung, JHEP 0207, 012 (2002)
K. Golec-Biernat, M. Wüsthoff, Phys. Rev. D 59, 014017 (1999); D 60, 114023 (1999); Eur. Phys. J C 20, 313 (2001)
E. Iancu, K. Itakura, S. Munier, Phys. Lett. B 590, 199 (2004)
J.W. Cronin et al. , Phys. Rev. D 11, 3105 (1975)
A. Accardi, nucl-th/0405046
BRAHMS Collaboration, R. Debbe, J. Phys. G 30, S759 (2004)
BRAHMS Collaboration, I. Arsene et al. , Phys. Rev. Lett. 93, 242303 (2004) nucl-ex/0403005
R.C. Hwa, C.B. Yang, Phys. Rev. Lett. 93, 082302 (2004)
ALICE Collaboration, CERN/LHCC-99-22, August 1999; K. Safarik, private communication
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Arrival of the final proofs: 4 July 2005
PACS:
11.15.Kc, 24.85. + p
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Betemps, M.A., Ducati, M.B.G. Dilepton pT suppression in the color glass condensate. Eur. Phys. J. C 43, 365–369 (2005). https://doi.org/10.1140/epjc/s2005-02264-3
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DOI: https://doi.org/10.1140/epjc/s2005-02264-3