Matching collinear and small x factorization calculations for inclusive hadron production in pA collisions

Anna M. Staśto, Bo Wen Xiao, Feng Yuan, David Zaslavsky

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We construct a theoretical framework to match the formulas for forward inclusive hadron productions in pA collisions in the small x saturation formalism and collinear factorization. The small x calculation can be viewed as a power series in Qs2/k 2, in which the collinear factorization result corresponds to the leading term. At high transverse momentum, the subleading correction terms are insignificant, whereas at low p, the power corrections become important and the small x resummation is essential to describe the differential cross section. We show that the familiar collinear factorization calculation can smoothly match the results from small x factorization at next-to-leading order in αs when we use exact kinematics, as opposed to the approximate kinematics in previous work. With this matching, we can describe the experimental data from the RHIC very well at high p.

Original languageEnglish (US)
Article number014047
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume90
Issue number1
DOIs
StatePublished - Jul 24 2014

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Matching collinear and small x factorization calculations for inclusive hadron production in pA collisions'. Together they form a unique fingerprint.

Cite this