# Searching for Higgs Decays to as Many as 8 Leptons

Izaguirre, Eder (Brookhaven National Laboratory, Upton, New York 11973, USA) ; Stolarski, Daniel (Ottawa-Carleton Institute for Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada)

03 December 2018

Abstract: We propose a search for Higgs decays with as many as 8 leptons in the final state. This signal can arise in a simple model with a hidden vector (${A}_{d}$) that gets mass via a hidden scalar (${h}_{d}$) vacuum expectation value. The 125 GeV Higgs boson can then decay $H\to {h}_{d}{h}_{d}\to 4{A}_{d}\to 8f$, where $f$ are standard model fermions. We recast current searches and show that a branching ratio (BR) of $H\to {h}_{d}{h}_{d}$ as large as 10% is allowed. We also describe a dedicated search that could place bounds on $\mathrm{BR}\left(H\to {h}_{d}{h}_{d}\right)$ as low as ${10}^{-5}$ using only $36\text{}\text{}{\mathrm{fb}}^{-1}$ of data, with significant improvements coming from greater integrated luminosity.

Published in: Physical Review Letters 121 (2018)
Published by: APS
DOI: 10.1103/PhysRevLett.121.221803
arXiv: 1805.12136
License: CC-BY-4.0

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