30-31 July 2018
Instituto de Física da Universidade de São Paulo
America/Sao_Paulo timezone
Evento comemorativo dos 10 anos da Rede Nacional de Física de Altas Energias

Search for Higgs boson pair-production in the $\mathbf{b\bar{b}\tau^+\tau^-}$\ decay channel with the ATLAS detector

30 Jul 2018, 09:00
15m
Auditório Novo 1 (Instituto de Física da Universidade de São Paulo)

Auditório Novo 1

Instituto de Física da Universidade de São Paulo

Análise de Dados Análise de Dados

Speaker

Marisilvia Donadelli (Universidade de Sao Paulo (BR))

Description

In this talk we present a search for resonant and non-resonant Higgs boson pair-production decaying to $\mathbf{b\bar{b}\tau^+\tau^-}$, considering the semi-leptonic and fully hadronic final states of the $\tau$-leptons. The analysis uses 36.1 fb$^{-1}$ of data collected by the ATLAS experiment at the LHC in 2015 and 2016 at a centre-of-mass energy of $\sqrt{s} =$ 13 TeV. The inclusion of the fully hadronic decay channel in this analysis further improves the sensitivity of the $hh \rightarrow\mathbf{b\bar{b}\tau^+\tau^-}$ decay in contrast with Run-1 results. Results for non-resonant Higgs pair-production are compared to Standard Model predictions. The data are also analyzed to probe resonant Higgs pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall-Sundrum bulk graviton model.

Primary author

Marisilvia Donadelli (Universidade de Sao Paulo (BR))

Presentation Materials