\(W\) boson polarization as a measure of gauge-Higgs anomalous couplings at the LHC

DOI10.1016/J.NUCLPHYSB.2019.01.008zbMATH Open1409.81178arXiv1805.06602OpenAlexW2804245368MaRDI QIDQ1731661

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Publication date: 13 March 2019

Published in: (Search for Journal in Brave)

Abstract: We show how the $W$ boson polarization in the process of associated $W^{pm}H$ production at the Large Hadron Collider (LHC) can be used to constrain anomalous $WWH$ couplings. We first calculate the spin density matrix for the $W$ to linear order in the anomalous couplings, which are assumed to be small. We then evaluate angular asymmetries in the decay distributions of leptons produced in the decay of the $W$ and show how they can be used to measure the individual elements of the polarization tensor. We estimate the limits that can be placed on the anomalous $WWH$ couplings at a future run of the LHC.

Full work available at URL: https://arxiv.org/abs/1805.06602

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