Running coupling corrections to high energy inclusive gluon production

被引:30
|
作者
Horowitz, W. A. [1 ,2 ]
Kovchegov, Yuri V. [1 ]
机构
[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[2] Univ Cape Town, Dept Phys, ZA-7701 Rondebosch, South Africa
关键词
Running coupling; Gluon production; Color Glass Condensate; COLOR GLASS CONDENSATE; HEAVY-QUARK PRODUCTION; EVOLUTION; NUCLEUS; SATURATION; COLLISIONS; MODEL; QCD; UNITARITY; MOMENTUM;
D O I
10.1016/j.nuclphysa.2010.10.014
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
We calculate running coupling corrections for the lowest-order gluon production cross section in high energy hadronic and nuclear scattering using the BLM scale-setting prescription. In the final answer for the cross section the three powers of fixed coupling are replaced by seven factors of running coupling, five in the numerator and two in the denominator, forming a 'septumvirate' of running couplings, analogous to the 'triumvirate' of running couplings found earlier for the small-x BFKL/BK/JIMWLK evolution equations. It is interesting to note that the two running couplings in the denominator of the 'septumvirate' run with complex-valued momentum scales, which are complex conjugates of each other, such that the production cross section is indeed real. We use our lowest-order result to conjecture how running coupling corrections may enter the full fixed-coupling k(T)-factorization formula for gluon production which includes nonlinear small-x evolution. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:72 / 97
页数:26
相关论文
共 50 条
  • [1] Running coupling corrections to inclusive gluon production
    Horowitz, W. A.
    Kovchegov, Y. V.
    [J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2011, 38 (12)
  • [2] Collinear singularities and running coupling corrections to gluon production in CGC
    Kovchegov, Yuri V.
    Weigert, Heribert
    [J]. NUCLEAR PHYSICS A, 2008, 807 (3-4) : 158 - 189
  • [3] Testing the running coupling kT-factorization formula for the inclusive gluon production
    Duraes, F. O.
    Giannini, A. V.
    Goncalves, V. P.
    Navarra, F. S.
    [J]. PHYSICAL REVIEW D, 2016, 94 (05)
  • [4] DOUBLE-LOGARITHMIC CORRECTIONS TO INCLUSIVE SINGLE GLUON PRODUCTION IN QUARK ANTIQUARK HIGH-ENERGY SCATTERING
    ERMOLAEV, BI
    [J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1992, 55 (02): : 325 - 330
  • [5] Inclusive gluon production in high energy onium-onium scattering
    Kovchegov, YV
    [J]. PHYSICAL REVIEW D, 2005, 72 (09):
  • [6] Solving the high energy evolution equation including running coupling corrections
    Albacete, Javier L.
    Kovchegov, Yuri V.
    [J]. PHYSICAL REVIEW D, 2007, 75 (12):
  • [7] Ghost-gluon running coupling, power corrections, and the determination of Λ(MS)over-bar
    Boucaud, Ph.
    De Soto, F.
    Leroy, J. P.
    Le Yaouanc, A.
    Micheli, J.
    Pene, O.
    Rodriguez-Quintero, J.
    [J]. PHYSICAL REVIEW D, 2009, 79 (01):
  • [8] Power corrections and running coupling
    Marchesini, G
    [J]. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 1999, 71 : 85 - 89
  • [9] Power corrections and running coupling
    Marchesini, G
    [J]. DEEP INELASTIC SCATTERING AND QCD - 5TH INTERNATIONAL WORKSHOP, 1997, (407): : 983 - 987
  • [10] Running coupling and power corrections in non-linear evolution at the high-energy limit
    Gardi, Einan
    Kuokkanen, Janne
    Rummukainen, Kari
    Weigert, Heribert
    [J]. NUCLEAR PHYSICS A, 2007, 784 : 282 - 340