The 39th International Symposium on Lattice Field Theory (Lattice 2022)

Collins-Soper kernel and soft function from lattice QCD

10 Aug 2022, 15:20

20m

CP1-HSZ/0.010 (CP1-HSZ) - HS2 (CP1-HSZ)

Oral Presentation Hadron Structure Hadron Structure

Speaker

Hai-Tao Shu (Regensburg University)

Description

In this talk I will show our calculations of Collins-Soper kernel and soft function on a newly generated 2+1 flavor clover fermion CLS ensemble of size ${48}^4$ with $a=0.098$ fm. The light sea quark mass corresponds to a pion mass of 333 MeV for this ensemble and the valence quark mass to 662 MeV. We measure the large-momentum-transfer meson form factors and its transverse-momentum-depdent wave functions at momenta up to $P^z=12\frac{2\pi }{L}$. The Collins-Soper kernel and soft function are extracted from them using next-to-leading-order factorization based on large-momentum effective theory. Our results are in good agreement with literature.

Presentation materials

lattice.pdf