Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9953908 | Physics Letters B | 2018 | 6 Pages |
Abstract
Horowitz and Kovchegov have derived a kT-factorization formula for particle production at small x which includes running coupling corrections. We perform a first numerical analysis to confront the theory with data on the energy and centrality dependence of particle multiplicities at midrapidity in high-energy p+A (and A+A) collisions. Moreover, we point out a strikingly different dependence of the multiplicity per participant on Npart in p+Pb vs. Pb+Pb collisions at LHC energies, and argue that the observed behavior follows rather naturally from the convolution of the gluon distributions of an asymmetric vs. symmetric projectile and target.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Adrian Dumitru, Andre V. Giannini, Matthew Luzum, Yasushi Nara,