Study of same-sign W boson scattering and anomalous couplings in events with one tau lepton from pp collisions at $$sqrt{s}=13$$ TeV Journal Article

Overview

; A; bstract; ; ; 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; ; $${1.44}_{-0.56}^{+0.63}$$; ; 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.;

Hayrapetyan A; Tumasyan A; Adam W; Andrejkovic JW; Bergauer T; Chatterjee S; Damanakis K; Dragicevic M; Hussain PS; Jeitler M