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Title: Scalar form factor of the proton with light-cone QCD sum rules

Abstract

We calculate the scalar form factor of the proton in the framework of the light-cone QCD sum rules approach with the three valence quark light-cone distribution amplitudes up to twist-6 and observe the scalar form factor {sigma}(t=-Q{sup 2}) at intermediate and large momentum transfers Q{sup 2}>2 GeV{sup 2} has significant contributions from the end point (or soft) terms. The numerical values for the {sigma}(t=-Q{sup 2}) are compatible with the calculations from the chiral quark model and lattice QCD at the region Q{sup 2}>2 GeV{sup 2}.

Authors:
 [1]; ;  [2]
  1. Department of Physics, North China Electric Power University, Baoding 071003 (China)
  2. Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)
Publication Date:
OSTI Identifier:
20782986
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.73.094011; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; CHIRAL SYMMETRY; CHIRALITY; DISTRIBUTION; FORM FACTORS; LATTICE FIELD THEORY; LIGHT CONE; MOMENTUM TRANSFER; PROTONS; QUANTUM CHROMODYNAMICS; QUARK MODEL; QUARKS; SCALARS; SUM RULES; VALENCE

Citation Formats

Wang Zhigang, Wan Shaolong, and Yang Weimin. Scalar form factor of the proton with light-cone QCD sum rules. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.73.094011.
Wang Zhigang, Wan Shaolong, & Yang Weimin. Scalar form factor of the proton with light-cone QCD sum rules. United States. doi:10.1103/PHYSREVD.73.094011.
Wang Zhigang, Wan Shaolong, and Yang Weimin. Mon . "Scalar form factor of the proton with light-cone QCD sum rules". United States. doi:10.1103/PHYSREVD.73.094011.
@article{osti_20782986,
title = {Scalar form factor of the proton with light-cone QCD sum rules},
author = {Wang Zhigang and Wan Shaolong and Yang Weimin},
abstractNote = {We calculate the scalar form factor of the proton in the framework of the light-cone QCD sum rules approach with the three valence quark light-cone distribution amplitudes up to twist-6 and observe the scalar form factor {sigma}(t=-Q{sup 2}) at intermediate and large momentum transfers Q{sup 2}>2 GeV{sup 2} has significant contributions from the end point (or soft) terms. The numerical values for the {sigma}(t=-Q{sup 2}) are compatible with the calculations from the chiral quark model and lattice QCD at the region Q{sup 2}>2 GeV{sup 2}.},
doi = {10.1103/PHYSREVD.73.094011},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 73,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}