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Title: Exclusive channels in semi-inclusive production of pions and kaons

Abstract

We investigate the role of exclusive channels in semi-inclusive electroproduction of pions and kaons. Using the QCD factorization theorem for hard exclusive processes we evaluate the cross sections for exclusive pseudoscalar and vector meson production in terms of generalized parton distributions and meson distribution amplitudes. We investigate the uncertainties arising from the modeling of the nonperturbative input quantities. Combining these results with available experimental data, we compare the cross sections for exclusive channels to that obtained from quark fragmentation in semi-inclusive deep inelastic scattering. We find that rho0 production is the only exclusive channel with significant contributions to semi-inclusive pion production at large z and moderate Q2. The corresponding contribution to kaon production from the decay of exclusively produced phi and Kstar is rather small.

Authors:
; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
841120
Report Number(s):
JLAB-THY-05-375; DOE/ER/40150-3460; hep-ph/0506171
TRN: US0502362
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Journal Article
Resource Relation:
Other Information: No journal information given for this preprint; PBD: 1 Jun 2005
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; CROSS SECTIONS; DECAY; DEEP INELASTIC SCATTERING; DISTRIBUTION; ELECTROPRODUCTION; FACTORIZATION; FRAGMENTATION; KAONS; MESONS; PARTONS; PIONS; PRODUCTION; PSEUDOSCALARS; QUANTUM CHROMODYNAMICS; QUARKS; SIMULATION; VECTOR MESONS

Citation Formats

Markus Diehl, Wolfgang Kugler, Andreas Schaefer, and Christian Weiss. Exclusive channels in semi-inclusive production of pions and kaons. United States: N. p., 2005. Web.
Markus Diehl, Wolfgang Kugler, Andreas Schaefer, & Christian Weiss. Exclusive channels in semi-inclusive production of pions and kaons. United States.
Markus Diehl, Wolfgang Kugler, Andreas Schaefer, and Christian Weiss. Wed . "Exclusive channels in semi-inclusive production of pions and kaons". United States. https://www.osti.gov/servlets/purl/841120.
@article{osti_841120,
title = {Exclusive channels in semi-inclusive production of pions and kaons},
author = {Markus Diehl and Wolfgang Kugler and Andreas Schaefer and Christian Weiss},
abstractNote = {We investigate the role of exclusive channels in semi-inclusive electroproduction of pions and kaons. Using the QCD factorization theorem for hard exclusive processes we evaluate the cross sections for exclusive pseudoscalar and vector meson production in terms of generalized parton distributions and meson distribution amplitudes. We investigate the uncertainties arising from the modeling of the nonperturbative input quantities. Combining these results with available experimental data, we compare the cross sections for exclusive channels to that obtained from quark fragmentation in semi-inclusive deep inelastic scattering. We find that rho0 production is the only exclusive channel with significant contributions to semi-inclusive pion production at large z and moderate Q2. The corresponding contribution to kaon production from the decay of exclusively produced phi and Kstar is rather small.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 2005},
month = {Wed Jun 01 00:00:00 EDT 2005}
}