Implementation of NLO high energy factorization in single inclusive forward hadron production

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Ducloue , B , Lappi , T & Zhu , Y 2017 , ' Implementation of NLO high energy factorization in single inclusive forward hadron production ' , Physical Review D , vol. 95 , no. 11 , 114007 . https://doi.org/10.1103/PhysRevD.95.114007

Title: Implementation of NLO high energy factorization in single inclusive forward hadron production
Author: Ducloue, B.; Lappi, T.; Zhu, Y.
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Date: 2017-06-12
Language: eng
Number of pages: 11
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/234432
Abstract: Single inclusive particle production cross sections in high energy hadron collisions at forward rapidity are an important benchmark process for the Color Glass Condensate picture of small x QCD. Recent calculations of this process have not led to a stable perturbative expansion for this quantity at high transverse momenta. We consider the quark channel production cross section using the new rapidity factorization procedure proposed by Iancu et al. We show that for fixed coupling one does indeed obtain a physically meaningful cross section which is positive and reduces in a controlled way to previous leading order calculations. We also consider a running coupling that depends on the transverse momentum of the produced particle. This gives a stable result which, however, is not fully consistent with previous leading order calculations that use a coordinate space running coupling.
Subject: EVOLUTION
114 Physical sciences
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