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Higher twist QCD terms in high-P/sub T/ pion production

Conference · · AIP Conf. Proc.; (United States)
OSTI ID:6382023
We investigate the higher twist subprocesses qG..-->..q..pi../sup + -/ and qq-bar..-->..G..pi../sup + -/ in the framework of perturbative Quantum Chromodynamics (QCD). Cross sections for these processes are compared with the minimum twist QCD results for qq-bar..-->..qq-bar and qG..-->..qG. The higher twist terms give sizeable corrections to the inclusive pion yields, particularly for qq-bar initial states. We also examine the effects of higher twist QCD terms for the charge ratio, N(..pi../sup -/N..--> pi../sup -/X)/ N(..pi../sup -/N..--> pi../sup +/X).
Research Organization:
High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
OSTI ID:
6382023
Report Number(s):
CONF-800724-
Conference Information:
Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 68:1
Country of Publication:
United States
Language:
English