Search for new resonances decaying to a $W$ or $Z$ boson and a Higgs boson in the $\ell^+ \ell^- b\bar b$, $\ell \nu b\bar b$, and $\nu\bar{\nu} b\bar b$ channels with $pp$ collisions at $\sqrt s = 13$ TeV with the ATLAS detector

TL;DR

This paper reports a search for new heavy resonances decaying into a W or Z boson and a Higgs boson in various decay channels using 13 TeV proton-proton collision data from the ATLAS detector, finding no significant signals.

Contribution

First search for heavy vector triplet resonances decaying to W/Z and Higgs bosons in multiple channels at 13 TeV with ATLAS, setting constraints on new physics models.

Findings

No significant excess observed in the analyzed channels.

Results set limits on the production of heavy vector triplet resonances.

Constraints are placed on simplified models of new heavy vector particles.

Abstract

A search is presented for new resonances decaying to a $W$ or $Z$ boson and a Higgs boson in the $\ell^+ \ell^- b\bar b$, $\ell\nu b\bar b$, and $\nu\bar{\nu} b\bar b$ channels in $pp$ collisions at $\sqrt s = 13$ TeV with the ATLAS detector at the Large Hadron Collider using a total integrated luminosity of 3.2 fb$^{-1}$. The search is conducted by looking for a localized excess in the $WH$/$ZH$ invariant or transverse mass distribution. No significant excess is observed, and the results are interpreted in terms of constraints on a simplified model based on a phenomenological Lagrangian of heavy vector triplets.