Study of quasi-beam function in twisted mass lattice QCD

We present an exploratory study of the quasi-beam function using an 𝑁 𝑓 = 2 + 1 + 1 twisted mass lattice of size 24 3 × 48, with a pion mass of 350 MeV and of lattice spacing 0 . 093 fm. We show results for longitudinal momentum of 1 . 7 GeV and transverse separation of up to 0 . 18 fm. We also study the non-perturbative renormalization of the bare matrix element using the RI/MOM scheme.