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Title: Multiple parton scattering in nuclei: Beyond helicity amplitude approximation

Abstract

Multiple parton scattering and induced parton energy loss in deeply inelastic scattering (DIS) off heavy nuclei is studied within the framework of generalized factorization in perturbative QCD with a complete calculation beyond the helicity amplitude (or soft bremsstrahlung) approximation. Such a calculation gives rise to new corrections to the modified quark fragmentation functions. The effective parton energy loss is found to be reduced by a factor of 5/6 from the result of helicity amplitude approximation.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director. Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics; National Science Foundation under Projects 19928511 and 10135030 (US)
OSTI Identifier:
823751
Report Number(s):
LBNL-52041
Journal ID: ISSN 0375-9474; R&D Project: NTCOST; TRN: US0401807
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Nuclear Physics, A
Additional Journal Information:
Journal Volume: 720; Journal Issue: 3-4; Other Information: Journal Publication Date: 06/16/2003; PBD: 21 Jan 2003; Journal ID: ISSN 0375-9474
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; BREMSSTRAHLUNG; FACTORIZATION; FRAGMENTATION; HEAVY NUCLEI; HELICITY; INELASTIC SCATTERING; NUCLEI; PARTONS; QUANTUM CHROMODYNAMICS; QUARKS; SCATTERING; PARTON ENERGY LOSS MULTIPLE SCATTERING

Citation Formats

Zhang, Ben-Wei, and Wang, Xin-Nian. Multiple parton scattering in nuclei: Beyond helicity amplitude approximation. United States: N. p., 2003. Web. doi:10.1016/S0375-9474(03)01003-0.
Zhang, Ben-Wei, & Wang, Xin-Nian. Multiple parton scattering in nuclei: Beyond helicity amplitude approximation. United States. doi:10.1016/S0375-9474(03)01003-0.
Zhang, Ben-Wei, and Wang, Xin-Nian. Tue . "Multiple parton scattering in nuclei: Beyond helicity amplitude approximation". United States. doi:10.1016/S0375-9474(03)01003-0. https://www.osti.gov/servlets/purl/823751.
@article{osti_823751,
title = {Multiple parton scattering in nuclei: Beyond helicity amplitude approximation},
author = {Zhang, Ben-Wei and Wang, Xin-Nian},
abstractNote = {Multiple parton scattering and induced parton energy loss in deeply inelastic scattering (DIS) off heavy nuclei is studied within the framework of generalized factorization in perturbative QCD with a complete calculation beyond the helicity amplitude (or soft bremsstrahlung) approximation. Such a calculation gives rise to new corrections to the modified quark fragmentation functions. The effective parton energy loss is found to be reduced by a factor of 5/6 from the result of helicity amplitude approximation.},
doi = {10.1016/S0375-9474(03)01003-0},
journal = {Nuclear Physics, A},
issn = {0375-9474},
number = 3-4,
volume = 720,
place = {United States},
year = {2003},
month = {1}
}