[CFNS seminar] Towards a model independent extraction of the Boer-Mulders function

by Prof. Elliot Leader (Imperial College)

Wednesday 2 Oct 2019, 16:00 → 17:00 US/Eastern

Room 2-38 (Physics, Building 510 A)

At present, the Boer-Mulders function for a given quark flavour has been extracted from data on semi-inclusive deep inelastic scattering using the simplifying, but theoretically inconsistent, assumption that it is proportional to the Sivers function for each quark flavour. In this paper, using the latest semi-inclusive deep inelastic COMPASS deuteron data on the and asymmetries we extract the collinear x_B-dependence of the Boer-Mulders function for the sum of the valence quarks Q_V=u_V + d_V in an essentially model independent way, and find a significant disagreement with the published results. Our analysis also yields interesting information on the transverse momentum dependence of the unpolarized quark distribution and fragmentation functions.