6533b82afe1ef96bd128b916
RESEARCH PRODUCT
Mesonic and binding contributions to the nuclear Drell-Yan process
Eugenio MarcoEulogio Osetsubject
PhysicsNuclear and High Energy PhysicsNuclear TheoryProtonMesonHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyNuclear TheoryFOS: Physical sciencesDrell–Yan processFísicaNuclear Theory (nucl-th)Nuclear physicsHigh Energy Physics - PhenomenologyCross section (physics)High Energy Physics - Phenomenology (hep-ph)medicine.anatomical_structurePionmedicineHigh Energy Physics::ExperimentSpectral functionNucleonNuclear ExperimentNucleusdescription
We have evaluated the Drell-Yan cross section in nuclei paying special attention to the meson cloud contribution from pion and rho-meson, for which an accurate calculation using the meson nuclear spectral functions is used. Similarly, the nucleonic contribution is evaluated in terms of a relativistic nucleon spectral function. Fair agreement with experiment is found for different nuclei and the results show a sizeable contribution from the renormalized meson cloud. In order to reproduce the experiment a novel element is introduced, consisting of a gradual energy loss of the incoming proton in its pass through the nucleus which produces a strong A dependence at x_1 large.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-12-01 |