6533b82bfe1ef96bd128d619
RESEARCH PRODUCT
On the implementation of NLO high energy factorization in single inclusive forward hadron production
Yan ZhuYan ZhuB. DuclouéB. DuclouéTuomas LappiTuomas Lappisubject
QuarkParticle physicsNuclear TheoryHadronFOS: Physical sciences01 natural sciences114 Physical scienceshigh energy physicsNuclear Theory (nucl-th)Nuclear physicsCross section (physics)High Energy Physics - Phenomenology (hep-ph)Factorization0103 physical sciencesnuclear theoryRapidityCoordinate space010306 general physicsPhysicsCouplingQuantum chromodynamicsta114010308 nuclear & particles physicsfenomenologiaEVOLUTIONHigh Energy Physics - Phenomenologyphenomenologydescription
Single inclusive particle production cross sections in high energy hadron collisions at forward rapidity are an important benchmark process for the CGC 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-06-12 |