Document details

Search for dark matter in association with a Higgs boson decaying to b-quarks in pp collisions at s=13 TeV with the ATLAS detector

Author(s): Onofre, A. ; Castro, Nuno Filipe Silva Fernandes ; ATLAS Collaboration

Date: 2017

Persistent ID: http://hdl.handle.net/1822/48879

Origin: RepositóriUM - Universidade do Minho

Project/scholarship: info:eu-repo/grantAgreement/FCT/3599-PPCDT/143069/PT ; info:eu-repo/grantAgreement/EC/FP7/246806/EU;

Subject(s): Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Science & Technology; Science & Technology; Science & Technology


Description

A search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks is presented, using 3.2 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC. The decay of the Higgs boson is reconstructed as a high-momentum View the MathML sourcebb¯ system with either a pair of small-radius jets, or a single large-radius jet with substructure. The observed data are found to be consistent with the expected backgrounds. Results are interpreted using a simplified model with a Z′Z′ gauge boson mediating the interaction between dark matter and the Standard Model as well as a two-Higgs-doublet model containing an additional Z′Z′ boson which decays to a Standard Model Higgs boson and a new pseudoscalar Higgs boson, the latter decaying into a pair of dark matter particles.

Document Type Journal article
Language English
Contributor(s) Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration
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