Orateur
Description
One of the main approximations adopted in the Color Glass Condensate (CGC) is the so-called eikonal approximation, which amounts to neglecting power-suppressed corrections in the high-energy limit. This approximation is well justified for asymptotically high energies. However, corrections to it might be sizable in the upcoming Electron Ion Collider. Furthermore, Deep inelastic scattering (DIS) is one of the clean processes to study observables in color glass condensate effective field theory at next-to-eikonal order. At next-to-eikonal order, we also have to take into account the effect of the quark background field. In this talk, I will present contributions to different processes occurring due to the inclusion of the effect of quark background field through t-channel quark exchange.
For semi-inclusive deep inelastic scattering (SIDIS) contributions coming due to dipole approximation at eikonal order have been studied till now. In this talk, I will present computations of other new contribution to the cross-section of SIDIS at next-to-eikonal accuracy due to including the effect of quark background field through t-channel quark exchange and obtain its relation to Transverse momentum dependent (TMD) calculations in small-x limit.
Furthermore, in the inclusive DIS process, there is the contribution that appears beyond eikonal order which is essentially the same as the quark model with large-x sea quark as well as valence quark. I will present details of this contribution to the cross-section of the Inclusive DIS process at next to the eikonal order in the small-x limit.
