Threshold resummation for the inclusive-hadron cross section in pp collisions

Daniel de Florian and Werner Vogelsang
Phys. Rev. D 71, 114004 – Published 6 June 2005

Abstract

We study the resummation of large logarithmic perturbative corrections to the partonic cross sections relevant for the process pphX 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 Relativistic Heavy-Ion Collider kinematics and find that subleading terms appear to play a rather important role here.

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  • Received 28 January 2005

DOI:https://doi.org/10.1103/PhysRevD.71.114004

©2005 American Physical Society

Authors & Affiliations

Daniel de Florian1 and Werner Vogelsang2

  • 1Departamento de Física, FCEYN, Universidad de Buenos Aires, (1428) Pabellón 1 Ciudad Universitaria, Capital Federal, Argentina
  • 2Physics Department and RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973, USA

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Issue

Vol. 71, Iss. 11 — 1 June 2005

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