Unintegrated parton distributions and particle production in hadronic collisions

2003/11/13 by Antoni Szczurek
Physics and Astronomy · #hep-ph #nucl-th

paper · pdf

published as Acta Phys.Polon. B35 (2004) 161-168 · 8 pages, 4 figures, a talk presented at the XXXIII International Symposium on Multiparticle Dynamics, 5-11 September 2003, Cracow, Poland

arxiv created 2003/11/13 · arxiv updated 2009/12/01

Abstract

The inclusive distributions of gluons and pions for high-energy NN collisions are calculated. The results for several unintegrated gluon distributions (UGD's) from the literature are compared. We find huge differences in both rapidity and p_t of gluons and π's in NN collisions for different models of UGD's. The Karzeev-Levin UGD gives good description of momentum distribution of charged hadrons at midrapidities. We find, however, that the gluonic mechanism discussed does not describe the inclusive spectra of charged particles in the fragmentation region. Some of the missing mechanisms are calculated with the help of unintegrated parton distributions from the solution of the CCFM equation.

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