Study of same-sign W boson scattering and anomalous couplings in events with one tau lepton from pp collisions at √s = 13 TeV

(CMS Collaboration) Hayrapetyan, Aram ; ... ; Giljanović, Duje ; Godinović, Nikola ; Lelas, Damir ; Šćulac, Ana ; Kovač, Marko ; Petković, Andro ; Šćulac, Toni ; Bargassa, Pedrame ; Brigljević, Vuko ; Chitroda, Bhakti Kanulal ; Ferenček, Dinko ; Jakovčić, Krešimir ; Mishra, Saswat ; Starodumov, Andrey ; Šuša, Tatjana ; ... ; Roguljić, Matej ; ... ; Makarenko, Vladimir (2025) Study of same-sign W boson scattering and anomalous couplings in events with one tau lepton from pp collisions at √s = 13 TeV. Journal of High Energy Physics, 2025 . ISSN 1126-6708

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Abstract

A first study is presented of the cross section for the scattering of same-sign W boson pairs via the detection of a τ lepton. The data from proton-proton collisions at the center-of-mass energy of 13 TeV were collected by the CMS detector at the LHC, and correspond to an integrated luminosity of 138 fb−1. Events were selected that contain two jets with large pseudorapidity and large invariant mass, one τ lepton, one light lepton (e or µ), and significant missing transverse momentum. The measured cross section for electroweak same-sign WW scattering is 1.44+0.63−0.56 times the standard model prediction. In addition, a search is presented for the indirect effects of processes beyond the standard model via the effective field theory framework, in terms of dimension-6 and dimension-8 operators.

Item Type:	Article
Uncontrolled Keywords:	Hadron-Hadron Scattering; Vector Boson Production
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Centre for detectors, sensors and electronics Division of Experimental Physics
Depositing User:	Ivana Vuglec
Date Deposited:	26 Jan 2026 09:34
URI:	http://fulir.irb.hr/id/eprint/11139
DOI:	10.1007/JHEP10(2025)219

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