Nonperturbative QCD and elastic processes at CEBAF energies [electronic resource].
- Published:
- Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1994.
- Physical Description:
- pages 273-287 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- The author outlines how one can approach nonperturbative aspects of the QCD dynamics studying elastic processes at energies accessible at upgraded CEBAF. The author`s point is that, in the absence of a complete theory of the nonperturbative effects, a possible way out is based on a systematic use of the QCD factorization procedure which separates theoretically understood ({open_quotes}known{close_quotes}) short-distance effects and nonperturbative ({open_quotes}unknown{close_quotes}) long-distance ones. The latter include hadronic distribution amplitudes, soft components of hadronic form factors etc. Incorporating the QCD sum rule version of the QCD factorization approach, one can relate these nonperturbative functions to more fundamental objects, vacuum condensates, which accumulate information about the nonperturbative structure of the QCD vacuum. The emerging QCD sum rule picture of hadronic form factors is characterized by a dominant role of essentially nonperturbative effects in the few GeV region, with perturbative mechanisms starting to show up for momentum transfers Q² closer to 10 GeV² and higher. Thus, increasing CEBAF energy provides a unique opportunity for a precision study of interplay between the perturbative and nonperturbative phenomena in the QCD description of elastic processes.
- Report Numbers:
- E 1.99:doe/er/40150--299
E 1.99: conf-9404197--
E 1.99:cebaf-r--95-001
cebaf-r--95-001
conf-9404197--
doe/er/40150--299 - Subject(s):
- Other Subject(s):
- Note:
- Published through SciTech Connect.
04/01/1994.
"doe/er/40150--299"
" conf-9404197--"
"cebaf-r--95-001"
"DE96001410"
Workshop on CEBAF at higher energies, Newport News, VA (United States), 14-16 Apr 1994.
Radyushkin, A.V.
Southeastern Universities Research Association, Inc., Newport News, VA (United States)
View MARC record | catkey: 13834375