Speaker
Description
In this talk, we present a thorough analysis of
The off-shell matrix elements for the
vertices are derived in terms of the quarkonium light-front wave function.
We discuss the role of the Melosh spin-rotation and relativistic corrections estimated by comparing our results with those in the standard nonrelativistic QCD (NRQCD) approach. We elaborate on the importance of taking into account the gluon virtualities, which distinguishes our approach from the ones based on TMD distributions.
We compare our results for
consider the possible impact of gluon saturation effects.
Based on:
I.Babiarz, R.Pasechnik, W.Schafer and A.Szczurek,
``Prompt hadroproduction of
JHEP 02, 037 (2020)
doi:10.1007/JHEP02(2020)037
[arXiv:1911.03403 [hep-ph]].
I.Babiarz, R.Pasechnik, W.Schafer and A.Szczurek,
``Hadroproduction of scalar
JHEP 06, 101 (2020)
doi:10.1007/JHEP06(2020)101
[arXiv:2002.09352 [hep-ph]].