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Low x physics and perturbative Regge asymptotics

Conference:

Abstract

Deep-inelastic scattering at small x is a new field of QCD phenomenology which HERA experiments started to explore. The data show the feature expected by the perturbative Regge asymptotics. We describe the parton picture of structure function evolution both for increasing Q{sup 2} and for decreasing x and discuss the leading logarithmic approximation of QCD on which this picture is based. The steep rise of the parton density towards smaller x gets saturated by parton recombination. An essential improvement of the leading logarithmic approximation has to be worked out in order to satisfy the unitarity conditions and in this way to describe the parton recombination in perturbative QCD. We review some ideas of the perturbative Regge asymptotics and some recent theoretical results about multi-reggeon exchange in QCD. (orig.)
Authors:
Publication Date:
Aug 01, 1994
Product Type:
Conference
Report Number:
DESY-94-155; CONF-9406273-
Reference Number:
SCA: 662330; PA: DEN-94:0FO455; EDB-95:025802; SN: 95001313520
Resource Relation:
Conference: Tennessee international symposium on radiative corrections,Gatlinburg, TN (United States),27 Jun - 1 Jul 1994; Other Information: PBD: Aug 1994
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DEEP INELASTIC SCATTERING; REGGE POLES; QUANTUM CHROMODYNAMICS; ASYMPTOTIC SOLUTIONS; PARTON MODEL; PERTURBATION THEORY; RECOMBINATION; STRUCTURE FUNCTIONS; UNITARITY; PARTICLE STRUCTURE; EXCHANGE INTERACTIONS; GREEN FUNCTION; 662330; PHOTON AND CHARGED-LEPTON INTERACTIONS WITH HADRONS
OSTI ID:
10107970
Research Organizations:
Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). Inst. fuer Hochenergiephysik
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0418-9833; Other: ON: DE95731933; TRN: DE94FO455
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
17 p.
Announcement Date:
Feb 03, 1995

Conference:

Citation Formats

Kirschner, R. Low x physics and perturbative Regge asymptotics. Germany: N. p., 1994. Web.
Kirschner, R. Low x physics and perturbative Regge asymptotics. Germany.
Kirschner, R. 1994. "Low x physics and perturbative Regge asymptotics." Germany.
@misc{etde_10107970,
title = {Low x physics and perturbative Regge asymptotics}
author = {Kirschner, R}
abstractNote = {Deep-inelastic scattering at small x is a new field of QCD phenomenology which HERA experiments started to explore. The data show the feature expected by the perturbative Regge asymptotics. We describe the parton picture of structure function evolution both for increasing Q{sup 2} and for decreasing x and discuss the leading logarithmic approximation of QCD on which this picture is based. The steep rise of the parton density towards smaller x gets saturated by parton recombination. An essential improvement of the leading logarithmic approximation has to be worked out in order to satisfy the unitarity conditions and in this way to describe the parton recombination in perturbative QCD. We review some ideas of the perturbative Regge asymptotics and some recent theoretical results about multi-reggeon exchange in QCD. (orig.)}
place = {Germany}
year = {1994}
month = {Aug}
}