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8–12 Apr 2019
Turin
Europe/Rome timezone

Off-shell initial state effects and gauge invariance in the Drell-Yan process

10 Apr 2019, 09:38
17m
Rettorato - Aula Principi d'Acaja

Rettorato - Aula Principi d'Acaja

via Verdi, 8 Turin
Parallel Session Talk WG6: Spin and 3D structure WG6: Spin and 3D structure

Speaker

Dr Maxim Nefedov (Samara University)

Description

We discuss production of Drell-Yan lepton pairs at hadron colliders
in the framework of the Parton Reggeization Approach, which includes
off-shell initial state effects in a gauge-invariant way. Other
possible prescriptions to restore gauge-invariance of
hard-scattering coefficient with off-shell initial-state partons are
also investigated and significant differences for the resulting
structure functions are found, especially for the
FUU(cos2ϕ). We compare our numerical results for
qT-spectra of the lepton pair with experimental data, obtained by
E-288 collaboration (S=19.4 and 23.8 GeV) and find a good
agreement. Also we perform predictions for the Drell-Yan structure
functions at NICA pp-collider (S=24 GeV).

Authors

Prof. Vladimir Saleev (Samara ) Dr Maxim Nefedov (Samara University)

Presentation materials