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arXiv · hep-ph/0601025

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

Zhi-Gang Wang·Shao-Long Wan·Wei-Min Yang
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Abstract

In this article, 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 $σ(t=-Q^2)$ at intermediate and large momentum transfers $Q^2> 2GeV^2$ has significant contributions from the end-point (or soft) terms. The numerical values for the $σ(t=-Q^2)$ are compatible with the calculations from the chiral quark model and lattice QCD at the region $Q^2>2GeV^2$.

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Zhi-Gang Wang, Shao-Long Wan, Wei-Min Yang. 2006-03-21. Scalar form-factor of the proton with light-cone QCD sum rules. https://doi.org/10.1103/physrevd.73.094011

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