[RBRC seminar] "NLO contributions to dijet production in proton-nucleus scattering using the Color Glass Condensate EFT"
by
2-160
https://bnl.zoomgov.com/j/1600983728?pwd=RAD7OLcqre7Ycsp6JfFp6HAnpyLxex.1
The Color Glass Condensate (CGC) is an effective field theory that describes the behavior of hadrons and nuclei at high energies (corresponding to small values of Bjorken-x), where the rapid growth of gluon densities is expected to be moderated by saturation effects. Experimental signatures of this saturated phase have been observed in electron-proton and proton-nucleus collisions. Enhancing the theoretical precision of observable predictions is crucial for firmly establishing the existence of this saturated regime of QCD matter. In this talk, I will present recent progress on next-to-leading order (NLO) corrections to dijet production in proton-nucleus (pA) scattering within the dilute-dense approximation of the CGC framework. Specifically, I will discuss results for the amplitudes of trijet production in the gluon-initiated channel. I will show that, for processes involving a qqg final state, when the parton integrated out to obtain a real correction is a (anti)quark and the qg pair is produced back-to-back, the resulting cross section admits a factorized form. In this limit, it can be expressed in terms of perturbatively calculable hard coefficients and transverse momentum dependent (TMD) quark distributions.