Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-07-31
Phys.Rev.D79:034009,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 11 figures
Scientific paper
10.1103/PhysRevD.79.034009
We discuss production of nonphotonic electrons in proton-proton scattering at RHIC. The distributions in rapidity and transverse momentum of charm and bottom quarks/antiquarks are calculated in the $k_t$-factorization approach. We use different unintegrated gluon distributions from the literature. The hadronization of heavy quarks is done by means of Peterson and Braaten et al. fragmentation functions. The semileptonic decay functions are found by fitting recent semileptonic data obtained by the CLEO and BABAR collaborations. We get good description of the data at large transverse momenta of electrons and find a missing strength concentrated at small transverse momenta of electrons. Plausible missing mechanisms are discussed.
Luszczak Marta
Maciula Rafal
Szczurek Antoni
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