The Platinum Channel: Higgs Decays to as many as 8 Leptons

Eder Izaguirre; Daniel Stolarski

doi:10.1103/PhysRevLett.121.221803

paper

The Platinum Channel: Higgs Decays to as many as 8 Leptons

arXiv:1805.12136 · doi:10.1103/PhysRevLett.121.221803

Abstract

We propose a search for Higgs decays with as many as eight 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 can then decay $H \to h_{d} h_{d} \to 4 A_{d} \to 8 f$ , where $f$ are Standard Model fermions. We recast current searches and show that a branching ratio of $H \to h_{d} h_{d}$ as large as 10% is allowed. We also describe a dedicated search that could place bounds on BR( $H \to h_{d} h_{d}$ ) as low as $1 0^{- 5}$ using only 36 fb $^{- 1}$ of data, with significant improvements coming from greater integrated luminosity.

7 pages, 2 figures. v2: References added. v3: A more detailed background study; approximate version published in PRL