TY  - JOUR
AU  - Dahlén, Benjamin
AU  - Löschner, Maximilian
AU  - Mękała, Krzysztof
AU  - Reuter, Jürgen
AU  - Stylianou, Panagiotis
TI  - EVAluation of the Equivalent Vector boson Approximation at highest energy colliders
JO  - Journal of high energy physics
VL  - 11
IS  - 11
SN  - 1126-6708
CY  - Heidelberg
PB  - Springer
M1  - PUBDB-2025-05260
M1  - arXiv:2507.19285
M1  - DESY-25-104
M1  - COMETA-2025-29
SP  - 002
PY  - 2025
N1  - cc-by, JHEP11(2025)002. 26 pages, 15 figures, v2: version published in JHEP
AB  - Collider processes at the highest available partonic center-of-mass energies — 10 TeV and above — exhibit a new regime of electroweak interactions where electroweak gauge bosons mostly act as quasi-massless partons in vector boson fusion processes. We scrutinize these processes using the Equivalent Vector boson Approximation (EVA) based on its implementation in the Monte Carlo generator framework Whizard. Using a variety of important physics processes, including top pairs, Higgs pairs, neutrino pairs, and vector boson pairs, we study the behavior of processes initiated by transverse and longitudinal vector bosons, both W and Z induced. By considering several distributions for each process, we conclude that: there is no universal, process-independent prescription which minimizes the discrepancies between EVA- and matrix-element-based predictions; even by resorting to process-by-process prescriptions, we typically observe significant observable-dependent effects; the uncertainties associated with parameter dependencies in the EVA can be as large as <i>O</i>(100%), and can only possibly be reduced by careful process-dependent kinematical selections.
KW  - Electroweak Precision Physics (autogen)
KW  - Higher Order Electroweak Calculations (autogen)
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1007/JHEP11(2025)002
UR  - https://bib-pubdb1.desy.de/record/641973
ER  -