Constraints on Higgs effective couplings in $H\nu \bar{\nu }$ production of CLIC at 380 GeV

Abstract

The potential of the $e^{+}{e}^{-}\to \nu \bar{\nu }H$ process in the first stage of CLIC considering center of mass energy of 380 GeV and assuming the baseline integrated luminosity of 500 fb${}^{-1}$ is examined to probe CP conserving dimension-six operators in a model-independent Standard Model effective field theory framework. In the analysis, a detailed fast simulation on $e^{+}{e}^{-}\to \nu \bar{\nu }H$ signal processes and dominant backgrounds are performed including parton showering with PYTHIA and detector simulation based on ILD type detector with DELPHES in MadGraph. The obtained best limits on the ${\bar{c}}_{HB}$, ${\bar{c}}_W=-{\bar{c}}_B$ and ${\bar{c}}_{HW}$ are $[-4.82;1.53]\times 10^{-2}$, $[-5.11;4.13]\times 10^{-3}$ and $[-6.58;5.55]\times 10^{-3}$, respectively.

13 pages, 6 figures, published version

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