# Search for the Dimuon Decay of the Higgs Boson in $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS Detector

## TL;DR

This paper reports a search for the Higgs boson decaying into two muons using 13 TeV proton-proton collision data from the ATLAS detector, setting upper limits on the decay rate relative to the Standard Model.

## Contribution

First search for Higgs to dimuon decay at 13 TeV with ATLAS, providing new upper limits on the decay rate compared to the Standard Model.

## Key findings

- No significant excess observed above background.
- Upper limit on cross section times branching ratio is 3.0 times the Standard Model at 13 TeV.
- Combined data yields an upper limit of 2.8 times the Standard Model.

## Abstract

A search for the dimuon decay of the Higgs boson was performed using data corresponding to an integrated luminosity of 36.1 fb$^{-1}$ collected with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13$ TeV at the Large Hadron Collider. No significant excess is observed above the expected background. The observed (expected) upper limit on the cross section times branching ratio is 3.0 (3.1) times the Standard Model prediction at the 95% confidence level for a Higgs boson mass of 125 GeV. When combined with the $pp$ collision data at $\sqrt{s}=7$ TeV and $\sqrt{s}=8$ TeV, the observed (expected) upper limit is 2.8 (2.9) times the Standard Model prediction.