Threshold Resummation for the Inclusive-Hadron Cross-Section in pp Collisions

Details Threshold Resummation for the Inclusive-Hadron Cross-Section in pp Collisions Threshold Resummation for the Inclusive-Hadron Cross-Section in pp Collisions

2005-01-27

arxiv.org/abs/hep-ph/0501258v1

Phys.Rev. D71 (2005) 114004

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 6 eps figures included

Scientific paper

10.1103/PhysRevD.71.114004

We study the resummation of large logarithmic perturbative corrections to the partonic cross sections relevant for the process pp->h X at high transverse momentum of the hadron h. These corrections arise near the threshold for the partonic reaction and are associated with soft-gluon emission. We perform the resummation to next-to-leading logarithmic accuracy. We present numerical results for the fixed-target regime and find enhancements over the next-to-leading order cross section, which significantly improve the agreement between theoretical predictions and data. We also apply the resummation for RHIC kinematics and find that subleading terms appear to play a rather important role here.

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