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

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

ATLAS

Collaboration

Sep 15, 2016

21 pages

Published in:

Phys.Lett.B 765 (2017) 11-31

Published: Feb 10, 2017

e-Print:

1609.04572 [hep-ex]

DOI:

10.1016/j.physletb.2016.11.035

PDG: Dark Matter Particle (

{{\mathit X}^{0}}

) Production in Hadron Collisions

Report number:

CERN-EP-2016-181

Experiments:

CERN-LHC-ATLAS

View in:

reference search75 citations

Citations per year

Abstract: (Elsevier)

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 bb¯ 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′ gauge boson mediating the interaction between dark matter and the Standard Model as well as a two-Higgs-doublet model containing an additional 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.

Note:

37 pages in total, author list starting page 21, 4 figures, 2 tables, final version published by Phys. Lett. B. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2015-23/

p p: scattering
p p: colliding beams
Higgs particle: hadroproduction
Higgs particle: associated production
Higgs particle: hadronic decay
dark matter: pair production
jet: bottom
bottom: pair production
bottom: 2
bottom: particle identification

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