Scalar form factor of the nucleon and nucleon--scalar meson coupling constant in QCD

Abstract

Scalar form factor of the nucleon is calculated in the framework of light cone QCD sum rules, using the most general form of the baryon current. Using the result on scalar form factor of the nucleon, the nucleon-scalar "sigma" and "a_0" meson coupling constants are estimated. Our results on these couplings are in good agreement with the prediction of the external field QCD sum rules method.

20 pages, 12 figures, LaTeX formatted

References in corpus (2)

• Nucleon Form Factors in QCD
• The nucleon-sigma coupling constant in QCD Sum Rules

Cited by in corpus (4)

• The Nucleon Distribution Amplitudes and their application to nucleon form factors and the $N\to \Delta$ transition at intermediate values of $Q^2$
• Light Cone QCD Sum Rules Analysis of the Axial N -> Delta Transition Form Factors
• Nucleon form factors induced by isovector and isoscalar axial-vector currents in QCD
• Scalar form factors $f_{\pi \pi }(Q^2)$ and $f_{KK}(Q^2)$ with light-cone QCD sum rules