21–23 Jun 2023
Center for Frontiers in Nuclear Science, Stony Brook University
US/Eastern timezone

QCD Global Analysis of (Single-Hadron Fragmentation) Transverse Single-Spin Asymmetries: the Role of Lattice QCD in Phenomenology

22 Jun 2023, 16:00
30m
Center for Frontiers in Nuclear Science, Stony Brook University

Center for Frontiers in Nuclear Science, Stony Brook University

Department of Physics and Astronomy Stony Brook University Stony Brook, NY 11794-3800

Speaker

Daniel Pitonyak (Lebanon Valley College)

Description

I will report on a recent QCD global analysis of single-spin asymmetries involving observables where single-hadron fragmentation is relevant. This includes measurements of the Sivers, Collins, and \sin(\phi_S) effects in SIDIS, Collins effect in electron-positron annihilation, Sivers effect in Drell-Yan, and AN in single-inclusive proton-proton collisions, which are sensitive to important TMD and collinear twist-3 (quark-gluon-quark) functions. In particular, I will focus on the transversity function, which then can be used to calculate the tensor charges of the nucleon, and discuss the role of lattice QCD in the phenomenological analysis.

Presentation materials