Frontiers and Careers in Nuclear and Hadronic Physics 2023

Pion and kaon transverse momentum-dependent parton distribution functions in lattice QCD

30 Oct 2023, 16:00

20m

Student and Postdoc Talks Research Talks

Speaker

Jacopo Tarello (The Cyprus Institute)

Description

We evaluate the transverse momentum-dependent parton distribution functions for the pion and kaon by computing the quasi-beam functions with asymmetric staple-shaped quark bilinear operators and combine it with the soft function and Collins-Soper kernels. These are computed within lattice QCD using an ${\mathcal{N}}_f=2+1+1$ twisted mass fermion ensemble of lattice size ${24}^3\times 48$, lattice spacing $a=0.093$ fm, pion mass of $350$ MeV and kaon mass of $554$ MeV. We study the mixing pattern of the extended operators composed of an asymmetric staple-shaped Wilson line through symmetry arguments and implement non-perturbative renormalization within both the RI/MOM scheme and a variant scheme, where the renormalization factors are computed at short distances.

Presentation materials

beamersintef.pdf