Speaker
Dr
Gherardo Vita
(SLAC)
Description
In this talk I discuss the calculation at N$^3$LO of the quark and gluon unpolarized $q_T$ Beam Functions and of the TMD Fragmentation Functions. I illustrate their role in the resummation of QCD observables at N3LL', such as $q_T$ distributions and Energy Energy Correlators. The matching kernels onto standard PDFs or FFs of these collinear gauge invariant objects can be obtained from the collinear expansion of differential partonic cross sections at the LHC, which we have calculate at N$^3$LO for both Drell-Yan and Higgs production in gluon fusion. I conclude by presenting the results for the N3LO EEC Jet Function and the resummation at N3LL' of the EEC in the back-to-back limit.
Primary author
Dr
Gherardo Vita
(SLAC)
