Speaker
Description
The transversity PDFs, which describe the difference between probabilities to find a parton spin aligned and anti-aligned to the transversely polarized parent nucleon, is considerably less constrained from experiments due to their chiral-odd nature. Complementary information from lattice QCD is desired. In this talk, we report a calculation using a $N_f = 2 +1$ HISQ ensemble with physical-mass quarks and a lattice spacing of $a = 0.076$ fm. Applying short distance factorization to the ratio-scheme renormalized bi-local matrix elements of nucleon boosted up to 1.5 GeV, we extract the first few Mellin moments and reconstruct the Bjorken-x dependence using a deep neural network (DNN). We also present the results from large-momentum effective theory approach utilizing a hybrid renormalization scheme.
