Speaker
Description
We use the Color Glass Condensate description of electron-nucleus collisions at high energy to study the diffractive production of a pair of jets with transverse momenta much larger than the nuclear saturation momentum. At leading order in the QCD coupling, the cross-section exhibits transverse-momentum dependent factorisation. Gluon saturation determines the ``intrinsic scale'' of the gluon diffractive TMD which in turn controls the transverse-momentum imbalance between the produced jets. The next-to-leading logarithmic corrections generate the quantum evolutions of the diffractive gluon distribution: the high-energy (BK/JIMWLK) evolution with increasing rapidity gap and the collinear (DGLAP and CSS) evolutions with increasing hard transverse momentum scale. The main consequence of the collinear evolutions is to push the typical momenta of the diffractive TMD to values which are parameterically much larger than. In practice saturation effects remain significant in certain kinematic regimes of interest as we demonstrate by studying the corresponding nuclear modification factor.