We propose a formula to determine the first moment of difference between the polarized ū and d̄ quarks in the nucleon, i.e., Δū-Δd̄ from the Drell-Yan processes in collisions of unpolarized hadrons with longitudinally polarized nucleons by measuring outgoing lepton helicities. As coefficients in the differential cross section depend on the u- and d-quark numbers in the unpolarized hadron beam, the difference Δū-Δd̄ can be independently tested by changing the hadron beam. Moreover, a formula for estimating the K factor in Drell-Yan processes is also suggested.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)