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=−Q2) at intermediate and large momentum transfers Q2>2GeV2 has significant contributions from the end-point (or soft) terms. The
numerical values for the σ(t=−Q2) are compatible with the calculations
from the chiral quark model and lattice QCD at the region Q2>2GeV2.Comment: 18 pages, 7 figures, revised versio