At the final Jefferson Lab 22 GeV Open Discussion of 2024 on Monday, Dec. 2, at 12:30 p.m., Christopher Cocuzza of William & Mary will present "Impact of High-x JLab Data on Extraction of Transversity PDFs and Tensor Charges" in CEBAF Center rm. F224/225 and via Zoom (passcode 22).
Abstract: Recent studies by the Jefferson Lab Angular Momentum (JAM) Collaboration have performed extractions of transversity parton distribution functions (PDFs) using both transverse momentum distribution (TMD)-dependent data and dihadron production data. These studies have looked into the extraction of tensor charges using experimental data and found that the result is agreeable with the calculations of lattice QCD. This potential disagreement between experiment and lattice for the tensor charges is sometimes called the "transverse spin puzzle." For such studies the high-x region is crucial, as there is currently little to no sensitivity there from experimental data and thus it is difficult to provide faithful uncertainties there. This talk will cover previous and upcoming impact studies using Jefferson Lab data and show that its high-x coverage and high precision can provide crucial information for addressing the transverse spin puzzle.