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Intrinsic Parton Transverse Momentum in Next-to-leading-order Pion Production by Papp, G.; Barnafoldi, G. G.; Levai, P.; Fai, G. is a scholarly article available to read on EtoBox.

What is Intrinsic Parton Transverse Momentum in Next-to-leading-order Pion Production about?

We study pion production in proton-proton collisions within a pQCD-improved parton model in next-to-leading order augmented by intrinsic transverse momentum ($k_\perp$) of the partons. We find the introduction of $k_\perp$ necessary to reproduce the experimental data in the CERN SPS to RHIC energy range. We study the influence of intrinsic $k_\perp$ on the so-called $K$ factor, the ratio of the NLO cross section to the Born term. A strong $p_T$ dependence is seen, especially in the 3-6 GeV transverse momentum region of the outgoing pion, where nuclear effects (e.g. the Cronin effect) play an important role.

Author

Papp, G.; Barnafoldi, G. G.; Levai, P.; Fai, G.

Published

2002

Language

EN