https://doi.org/10.1140/epjc/s10052-025-14171-4
Regular Article - Theoretical Physics
On the EFT validity for Drell–Yan tails at the LHC
1
Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
2
NHETC, Department of Physics and Astronomy, Rutgers University, 08854, Piscataway, NJ, USA
3
Instituto de Física, Universidade de São Paulo, 05580-090, São Paulo, São Paulo, Brazil
4
IJCLab, Pôle Théorie (Bat. 210), CNRS/IN2P3 et Université Paris-Saclay, 91405, Orsay, France
5
Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, Sommerfeldstr. 16, 52074, Aachen, Germany
a
felix.wilsch@physik.rwth-aachen.de
Received:
12
February
2025
Accepted:
7
April
2025
Published online:
25
April
2025
In this article, we examine the validity range of the Effective Field Theory (EFT) description of high-energy Drell–Yan processes at the LHC. To this purpose, we consider explicit mediators that contribute to these processes in the s- and t-channels, comparing their effects in Drell–Yan distributions with the ones obtained by matching onto the corresponding EFT. We determine the conditions for the EFT results to accurately describe these scenarios. In particular, we explore the impact of including dimension-eight 
operators in the faster convergence of the EFT series, at the analytical and numerical level, considering contributions to the cross section up to the square of 
EFT operator insertions. Moreover, we discuss the possible implications of clipping LHC data and illustrate results for a specific New-Physics scenario motivated by low-energy flavor data.
© The Author(s) 2025
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Funded by SCOAP3.
