https://doi.org/10.1140/epjc/s10052-024-13086-w
Regular Article - Theoretical Physics
More variables or more bins? Impact on the EFT interpretation of Drell–Yan measurements
1
Department of Physics, University of Genova, Via Dodecaneso 33, 16146, Genoa, Italy
2
INFN, Sezione di Genova, Via Dodecaneso 33, 16146, Genoa, Italy
a
samuele.grossi@ge.infn.it
b
riccardo.torre@ge.infn.it
Received:
22
April
2024
Accepted:
1
July
2024
Published online:
19
July
2024
We generalize previous studies on constraining operators of the Standard Model Effective Field Theory using Drell-Yan (DY) measurements to include at the same time all relevant operators and uncertainties. It has been shown that fully differential measurements (triple differential for neutral and double differential for charged) are more sensitive to EFT effects. Nevertheless, due to the finite statistics, the fully differential measurements sacrifice some statistical power on the shape (less invariant mass or transverse momentum bins) in favour of more kinematic variables. We show that when the observables are particularly sensitive to the shape of the distributions, such as the invariant mass of the two leptons in neutral DY, the single differential measurement with more bins, may be as sensitive as the fully differential one, at least for specific EFT operators. This suggests to always supplement fully differential analyses with projections into the relevant distributions evaluated with finer bins.
© The Author(s) 2024
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