On the implementation of NLO high energy factorization in single inclusive forward hadron production
| Autor: | Yan Zhu, B. Ducloué, Tuomas Lappi |
|---|---|
| Přispěvatelé: | Helsinki Institute of Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Quark
Particle physics Nuclear Theory Hadron FOS: Physical sciences 01 natural sciences 114 Physical sciences high energy physics Nuclear Theory (nucl-th) Nuclear physics Cross section (physics) High Energy Physics - Phenomenology (hep-ph) Factorization 0103 physical sciences nuclear theory Rapidity Coordinate space 010306 general physics Physics Coupling Quantum chromodynamics ta114 010308 nuclear & particles physics fenomenologia EVOLUTION High Energy Physics - Phenomenology phenomenology |
| Zdroj: | Physical Review D |
| Popis: | 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. REVTeX, 11 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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