Nuclear EMC effect through $\bar{\Lambda }/\Lambda$ production in semi-inclusive deep-inelastic scattering processes

Abstract

We calculate $\Lambda$ and $\bar{\Lambda }$ hadron production cross sections in charged lepton semi-inclusive deep-inelastic scattering off nuclear target ($A$, using iron $\mathrm{Fe}$ as an example) and deuteron ($D$) target. The results show that the ratio $({\bar{\Lambda }}^A/{\Lambda }^A)/({\bar{\Lambda }}^D/{\Lambda }^D)$ is sensitive to the sea quark content of the nucleus. We adopt three different models to take the nuclear EMC effect into account. The ratio $({\bar{\Lambda }}^A/{\Lambda }^A)/({\bar{\Lambda }}^D/{\Lambda }^D)$ is predicted to be different by these different models.

Comments: 9 pages, 10 figures