Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13 TeV with the ATLAS detector

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

External organisations

  • Université Mohamed Premier and LPTPM

Abstract

A search for decays of the Higgs boson into a pair of new spin-zero particles, H→aa, where the a-bosons decay into a b-quark pair and a muon pair, is presented. The search uses 36.1 fb−1 of proton–proton collision data at√s=13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. No significant deviation from the Standard Model prediction is observed. Upper limits at 95% confidence level are placed on the branching ratio (σH/σSM)×B(H→aa→bbμμ), ranging from 1.2×10−4 to 8.4×10−4 in the a-boson mass range of 20–60 GeV.Model-independent limits are set on the visible production cross-section times the branching ratio to the bbμμ final state for new physics, σv is (X)×B(X→bbμμ),ranging from 0.1 fb to 0.73 fb for mμμ between 18 and 62 GeV

Bibliographic note

36 pages in total, author list starting page 20, 6 figures, 2 tables, submitted to Phys. Lett. B. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2016-03/

Details

Original languageEnglish
Pages (from-to)1-21
Number of pages21
JournalPhysics Letters B
Volume790
Early online date21 Dec 2018
Publication statusPublished - 10 Mar 2019

Keywords

  • hep-ex

ASJC Scopus subject areas