Single-Inclusive Hadron Production in Polarized pp Scattering at Next-to-Leading Logarithmic Accuracy

Abstract

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, when the initial protons are longitudinally polarized. We perform the resummation to next-to-leading logarithmic accuracy. We present numerical results for center-of-mass energies of 19.4 GeV, relevant for comparisons to data from the Fermilab E704 experiment, and 62.4 GeV, where preliminary data from RHIC have recently become available. We find significant enhancements of the spin-dependent cross sections, but a decrease of the double-spin asymmetry for the process. This effect is less pronounced at the higher energy.

18 pages, 5 figures. Figures 3, 4 and 5 modified

References in corpus (4)

• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Global Analysis of Fragmentation Functions for Protons and Charged Hadrons
• Inclusive cross section and double helicity asymmetry for π^0 production in p+p collisions at sqrt(s)=200 GeV: Implications for the polarized gluon distribution in the proton
• Exploring the polarization of gluons in the nucleon

Cited by in corpus (3)

• The Baryon Anomaly: Evidence for Color Transparency and Direct Hadron Production at RHIC
• Single inclusive pion pT-spectra in proton-proton collisions at sqrt(s) = 22.4GeV: data versus perturbative QCD calculations
• Single-inclusive hadron production in transversely polarized p-p and pbar-p collisions with threshold resummation