English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This paper presents a search for decays of the Higgs boson with a mass of 125GeV into a pair of new pseudoscalar particles, $H\rightarrow aa$, where one$a$-boson decays into a $b$-quark pair and the other into a muon pair. Thesearch uses 139 fb$^{-1}$ of proton-proton collision data at a center-of-massenergy of $\sqrt{s}=13$ TeV recorded between 2015 and 2018 by the ATLASexperiment at the LHC. A narrow dimuon resonance is searched for in theinvariant mass spectrum between 16 GeV and 62 GeV. The largest excess of eventsabove the Standard Model backgrounds is observed at a dimuon invariant mass of52 GeV and corresponds to a local (global) significance of $3.3 \sigma$ ($1.7\sigma$). Upper limits at 95% confidence level are placed on the branchingratio of the Higgs boson to the $bb\mu\mu$ final state,$\mathcal{B}(H\rightarrow aa\rightarrow bb\mu\mu)$, and are in the range$\text{(0.2-4.0)} \times 10^{-4}$, depending on the signal mass hypothesis.

physical review. d/physical review. d.

Search for Higgs boson decays into a pair of pseudoscalar particles in  the $bb\mu\mu$ final state with the ATLAS detector in $pp$ collisions at  $\sqrt{s}=13$ TeV