arXiv:1706.08585·v2·High Energy Physics — Phenomenology
Rapidity distribution of particle multiplicity in DIS at small x
B. Blok (1) · Yu. Dokshitzer (2) · M. Strikman (3) ((1) Technion · (2) LPTHE · (3) Penn State)
Abstract
Analytical study of the rapidity distribution of the final state particles in deep inelastic scattering at small x is presented. We separate and analyse three sources of particle production: fragmentation of the quark-antiquark pair, accompanying coherent soft gluon radiation due to octet color exchange in the t-channel, and fragmentation of gluons that form parton distribution functions. Connection to Catani-Ciafaloni-Fiorani-Marchesini (CCFM) equations and the role of gluon reggezation are also discussed.
Comments: 14 pages, 6 Figures. Abstract extended, minor misprints corrected, derivations improved and explanations are streamlined. Published in Physics Letters, B/