Speaker
Yang Fu
(MIT)
Description
We will present the first lattice QCD calculation of the gluon Collins-Soper kernel, which governs the rapidity evolution of transverse-momentum-dependent gluon distributions. The calculation is performed at a near-physical pion-mass m_\pi = 172(3) MeV with lattice spacing a = 0.15 fm, using next-to-next-to-leading logarithmic matching in Large Momentum Effective Theory, covering transverse separations up to b_T = 0.60 fm. These results represent the first step toward a controlled determination of the gluon Collins-Soper kernel in QCD, with eventual phenomenological import and relevance to present and future experiments sensitive to the gluon structure of hadronic matter.
Primary authors
Dr
Artur Avkhadiev
(Argonne)
Yang Fu
(MIT)
Prof.
Phiala Shanahan
(MIT)
Michael Wagman
(Fermilab)
Yong Zhao
(Argonne)
