Journal Article

PUBDB-2025-05260

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png EVAluation of the Equivalent Vector boson Approximation at highest energy colliders

Dahlén, B. ; Löschner, M.DESY* ; Mękała, K. (Corresponding author)DESY* ; Reuter, J.DESY* ; Stylianou, P.DESY*

2025
Springer Heidelberg

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Please use a persistent id in citations: doi:10.1007/JHEP11(2025)002  doi:10.3204/PUBDB-2025-05260

Report No.: COMETA-2025-29; DESY-25-104; arXiv:2507.19285

Abstract: 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 $\mathcal{O}(100\%)$, and can only possibly be reduced by careful process-dependent kinematical selections.

Keyword(s): Electroweak Precision Physics ; Higher Order Electroweak Calculations

Note: cc-by, JHEP11(2025)002. 26 pages, 15 figures, v2: version published in JHEP

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) (390833306)
3. DFG project G:(GEPRIS)491245950 - Open-Access-Publikationskosten / 2025-2027 / DESY Hamburg (491245950) (491245950)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Dahlén, B. ; Löschner, M.Extern*DESY* ; Mekala, K.DESY* ; Reuter, J. (Corresponding author)DESY* ; Stylianou, P.DESY*
EVAluation of the Equivalent Vector Boson Approximation at highest energy colliders
[10.3204/PUBDB-2025-02315]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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