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Title: Light Cone Sum Rules for gamma*N ->Delta Transition Form Factors

Abstract

A theoretical framework is suggested for the calculation of {gamma}* N {yields} {Delta} transition form factors using the light-cone sum rule approach. Leading-order sum rules are derived and compared with the existing experimental data. We find that the transition form factors in a several GeV region are dominated by the ''soft'' contributions that can be thought of as overlap integrals of the valence components of the hadron wave functions. The ''minus'' components of the quark fields contribute significantly to the result, which can be reinterpreted as large contributions of the quark orbital angular momentum.

Authors:
; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
892167
Report Number(s):
JLAB-THY-05-436; DOE/ER/40150-4055
TRN: US0605555
DOE Contract Number:
AC05-84ER40150
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 73
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FORM FACTORS; HADRONS; LIGHT CONE; ORBITAL ANGULAR MOMENTUM; QUARKS; SUM RULES; VALENCE; WAVE FUNCTIONS

Citation Formats

V.M. Braun, A. Lenz, G. Peters, and A. Radyushkin. Light Cone Sum Rules for gamma*N ->Delta Transition Form Factors. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.034020.
V.M. Braun, A. Lenz, G. Peters, & A. Radyushkin. Light Cone Sum Rules for gamma*N ->Delta Transition Form Factors. United States. doi:10.1103/PhysRevD.73.034020.
V.M. Braun, A. Lenz, G. Peters, and A. Radyushkin. Wed . "Light Cone Sum Rules for gamma*N ->Delta Transition Form Factors". United States. doi:10.1103/PhysRevD.73.034020. https://www.osti.gov/servlets/purl/892167.
@article{osti_892167,
title = {Light Cone Sum Rules for gamma*N ->Delta Transition Form Factors},
author = {V.M. Braun and A. Lenz and G. Peters and A. Radyushkin},
abstractNote = {A theoretical framework is suggested for the calculation of {gamma}* N {yields} {Delta} transition form factors using the light-cone sum rule approach. Leading-order sum rules are derived and compared with the existing experimental data. We find that the transition form factors in a several GeV region are dominated by the ''soft'' contributions that can be thought of as overlap integrals of the valence components of the hadron wave functions. The ''minus'' components of the quark fields contribute significantly to the result, which can be reinterpreted as large contributions of the quark orbital angular momentum.},
doi = {10.1103/PhysRevD.73.034020},
journal = {Physical Review D},
number = ,
volume = 73,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2006},
month = {Wed Feb 01 00:00:00 EST 2006}
}