Joint ECFA-NuPECC-APPEC Activity Workshop "Synergies between the EIC and the LHC"

A Better Angle on Hadron Transverse Momentum Distributions at the EIC

Not scheduled

25m

Auditorium (DESY, Hamburg)

participant talk Synergies in physics from HERA to LHC to EIC

Speaker

Johannes Michel (not set)

Description

I discuss a new TMD-sensitive observable $q_*$ for semi-inclusive DIS that is defined purely in terms of lab-frame angles, enabling an order-of-magnitude improvement in experimental resolution for probing the 3D structure of the nucleon and the fragmentation process at the EIC. This proposal is inspired by the $\phi^*_\eta$ observable that has enabled the LHC experimental collaborations to resolve transverse-momentum distributions in Drell-Yan production at the permille level, and goes beyond it e.g. by including the effect of spin asymmetries. I close by discussing the prospects of extending the observable to final-state jets, and review recent progress in turning the observable into a TMD sensitive energy correlator measurement.