Soft-Gluon Resummation and the Valence Parton Distribution Function of the Pion
Soft-Gluon Resummation and the Valence Parton Distribution Function of the Pion
We determine the valence parton distribution function of the pion by performing a new analysis of data for the Drell-Yan process $\pi^- N\to \mu^+\mu^-X$. Compared to previous analyses, we include next-to-leading-logarithmic threshold resummation effects in the calculation of the Drell-Yan cross section. As a result of these, we find a …