https://doi.org/10.1140/epjc/s10052-024-12908-1
Regular Article - Theoretical Physics
On electroweak corrections to neutral current Drell–Yan with the POWHEG BOX
1
INFN, Sezione di Pavia, Via A. Bassi 6, 27100, Pavia, Italy
2
INFN, Sezione di Pavia and Dipartimento di Fisica, Università di Pavia, Via A. Bassi 6, 27100, Pavia, Italy
Received:
4
March
2024
Accepted:
10
May
2024
Published online:
28
May
2024
Motivated by the requirement of a refined and flexible treatment of electroweak corrections to the neutral current Drell–Yan process, we report on recent developments on various input parameter/renormalization schemes for the calculation of fully differential cross sections, including both on-shell and schemes. The latter are particularly interesting for direct determinations of running couplings at the highest LHC energies. The calculations feature next-to-leading order precision with additional higher order contributions from universal corrections such as
and
. All the discussed input parameter/renormalization scheme options are implemented in the package of POWHEG-BOX-V2 dedicated to the neutral current Drell–Yan simulation, i.e. Z_ew-BMNNPV, which is used to obtain the presented numerical results. In particular, a comprehensive analysis on physical observables calculated with different input parameter/renormalization schemes is presented, addressing the Z peak invariant mass region as well as the high energy window. We take the opportunity of reporting also on additional improvements and options introduced in the package Z_ew-BMNNPV after svn revision 3376, such as different options for the treatment of the hadronic contribution to the running of the electromagnetic coupling and for the handling of the unstable Z resonance.
© The Author(s) 2024
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