SciPost Phys. Proc. 8, 052 (2022) ·
published 12 July 2022
|
· pdf
A new method is suggested for the extraction of $u$-quark and $d$-quark
transversity distributions, using single spin asymmetry (SSA) data in
semi-inclusive deep inelastic scattering (SIDIS) processes, where they couple
to the Collins or the di-hadron fragmentation functions. We discuss a recent
suggestion to extract the transversity distribution using the concept of
difference asymmetries and their ratios, which avoids the requirement of
Collins function. We suggest new measurements, involving ratios of polarized
cross-sections, that would directly probe the ratio $h_1^{d_v}/h_1^{u_v}$. We
also show some numerical estimates.
