Nonperturbative functions for SIDIS and Drell-Yan processes
- Author(s): Sun, P;
- Isaacson, J;
- Yuan, CP;
- Yuan, F
- et al.
Published Web Locationhttps://doi.org/10.1142/S0217751X18410063
We update the well-known BLNY fit to the low transverse momentum Drell-Yan lepton pair productions in hadronic collisions, by considering the constraints from the semi-inclusive hadron production in deep inelastic scattering (SIDIS) from HERMES and COMPASS experiments. We follow the Collins-Soper-Sterman (CSS) formalism with the b∗-prescription. A nonperturbative form factor associated with the transverse momentum dependent quark distributions is found in the analysis with a new functional form different from that of BLNY. This releases the tension between the BLNY fit to the Drell-Yan data with the SIDIS data from HERMES/COMPASS in the CSS resummation formalism.