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Title: Topics in nuclear chromodynamics: Color transparency and hadronization in the nucleus

Abstract

The nucleus plays two complimentary roles in quantum chromodynamics: (1) A nuclear target can be used as a control medium or background field to modify or probe quark and gluon subprocesses. Some novel examples are color transparency, the predicted transparency of the nucleus to hadrons participating in high momentum transfer exclusive reactions, and formation zone phenomena, the absence of hard, collinear, target-induced radiation by a quark or gluon interacting in a high momentum transfer inclusive reaction if its energy is large compared to a scale proportional to the length of the target. (Soft radiation and elastic initial state interactions in the nucleus still occur.) Coalescence with co-moving spectators is discussed as a mechanism which can lead to increased open charm hadroproduction, but which also suppresses forward charmonium production (relative to lepton pairs) in heavy ion collisions. Also discussed are some novel features of nuclear diffractive amplitudes--high energy hadronic or electromagnetic reactions which leave the entire nucleus intact and give nonadditive contributions to the nuclear structure function at low /kappa cur//sub Bj/. (2) Conversely, the nucleus can be studied as a QCD structure. At short distances, nuclear wave functions and nuclear interactions necessarily involve hidden color, degrees of freedom orthogonal tomore » the channels described by the usual nucleon or isobar degrees of freedom. At asymptotic momentum transfer, the deuteron form factor and distribution amplitude are rigorously calculable. One can also derive new types of testable scaling laws for exclusive nuclear amplitudes in terms of the reduced amplitude formalism.« less

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (USA)
OSTI Identifier:
6993081
Report Number(s):
SLAC-PUB-4551; CONF-880331-6
ON: DE88010679
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: 3. Lake Louise Winter Institute on quantum chromodynamics: theory and experiment, Lake Louise, Canada, 6 Mar 1988
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; NUCLEAR MODELS; QUANTUM CHROMODYNAMICS; DEGREES OF FREEDOM; ELASTIC SCATTERING; EXCLUSIVE INTERACTIONS; HADRON REACTIONS; HADRONIC PARTICLE DECAY; HELICITY; J PSI-3097 MESONS; LIGHT CONE; PROTON-PROTON INTERACTIONS; QUANTIZATION; SELECTION RULES; STRUCTURE FUNCTIONS; WAVE FUNCTIONS; BARYON-BARYON INTERACTIONS; BOSONS; CHARMONIUM; DECAY; ELEMENTARY PARTICLES; FIELD THEORIES; FUNCTIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; MATHEMATICAL MODELS; MESONS; NUCLEAR REACTIONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PROTON-NUCLEON INTERACTIONS; QUANTUM FIELD THEORY; QUARKONIUM; SCATTERING; SPACE-TIME; VECTOR MESONS; 653001* - Nuclear Theory- Nuclear Structure, Moments, Spin, & Models

Citation Formats

Brodsky, S J. Topics in nuclear chromodynamics: Color transparency and hadronization in the nucleus. United States: N. p., 1988. Web.
Brodsky, S J. Topics in nuclear chromodynamics: Color transparency and hadronization in the nucleus. United States.
Brodsky, S J. Tue . "Topics in nuclear chromodynamics: Color transparency and hadronization in the nucleus". United States. https://www.osti.gov/servlets/purl/6993081.
@article{osti_6993081,
title = {Topics in nuclear chromodynamics: Color transparency and hadronization in the nucleus},
author = {Brodsky, S J},
abstractNote = {The nucleus plays two complimentary roles in quantum chromodynamics: (1) A nuclear target can be used as a control medium or background field to modify or probe quark and gluon subprocesses. Some novel examples are color transparency, the predicted transparency of the nucleus to hadrons participating in high momentum transfer exclusive reactions, and formation zone phenomena, the absence of hard, collinear, target-induced radiation by a quark or gluon interacting in a high momentum transfer inclusive reaction if its energy is large compared to a scale proportional to the length of the target. (Soft radiation and elastic initial state interactions in the nucleus still occur.) Coalescence with co-moving spectators is discussed as a mechanism which can lead to increased open charm hadroproduction, but which also suppresses forward charmonium production (relative to lepton pairs) in heavy ion collisions. Also discussed are some novel features of nuclear diffractive amplitudes--high energy hadronic or electromagnetic reactions which leave the entire nucleus intact and give nonadditive contributions to the nuclear structure function at low /kappa cur//sub Bj/. (2) Conversely, the nucleus can be studied as a QCD structure. At short distances, nuclear wave functions and nuclear interactions necessarily involve hidden color, degrees of freedom orthogonal to the channels described by the usual nucleon or isobar degrees of freedom. At asymptotic momentum transfer, the deuteron form factor and distribution amplitude are rigorously calculable. One can also derive new types of testable scaling laws for exclusive nuclear amplitudes in terms of the reduced amplitude formalism.},
doi = {},
url = {https://www.osti.gov/biblio/6993081}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {3}
}

Conference:
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