The Drell-Yan cross section ratios, [Formula Presented] measured in Fermilab E866, have led to the first determination of [Formula Presented] [Formula Presented] and the integral of [Formula Presented] for the proton over the range [Formula Presented] The E866 results are compared with predictions based on parton distribution functions and various theoretical models. The relationship between the E866 results and the NMC measurement of the Gottfried integral is discussed. The agreement between the E866 results and models employing virtual mesons indicates that these non-perturbative processes play an important role in the origin of the [Formula Presented] asymmetry in the nucleon sea.
|Original language||English (US)|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - Jan 1 1998|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)