Tensor form factors of nucleon in QCD

ERKOL G., ÖZPİNECİ A.

PHYSICS LETTERS B, vol.704, no.5, pp.551-558, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 704 Issue: 5
  • Publication Date: 2011
  • Doi Number: 10.1016/j.physletb.2011.09.089
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.551-558
  • Keywords: Nucleon tensor form factors, Light-cone QCD sum rules, GENERALIZED PARTON DISTRIBUTIONS, TRANSVERSE POLARIZATION, RESONANCE PHYSICS, SUM-RULES, ELECTROPRODUCTION, PHOTOPRODUCTION, DECOMPOSITION, COLLINS, CHARGE, QUARKS
  • Middle East Technical University Affiliated: Yes

Abstract

We extract the isovector tensor nucleon form factors, which play an important role in understanding the transverse spin structure of the nucleon when related to the quark helicity-flip generalized parton distributions via their first moments. We employ the light-cone QCD sum rules to leading order in QCD and include distribution amplitudes up to twist 6 in order to calculate the three tensor form factors H(T). E(T) and (H) over bar (T). Our results agree well with those from other approaches in the low and high momentum-transfer regions. (C) 2011 Elsevier B.V. All rights reserved.