Search for associated production of dark matter with a Higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 TeV
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Author(s)
Type
Journal Article
Abstract
A search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. The data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected in 2015 with the CMS detector at the LHC, correspond to an integrated luminosity of 2.3 fb−1. Results are interpreted in the context of a Z′-two-Higgs-doublet model, where the gauge symmetry of the standard model is extended by a U(1)Z ′ group, with a new massive Z′ gauge boson, and the Higgs sector is extended with four additional Higgs bosons. In this model, a high-mass resonance Z′ decays into a pseudoscalar boson A and a light SM-like scalar Higgs boson, and the A decays to a pair of dark matter particles. No significant excesses are observed over the background prediction. Combining results from the two decay channels yields exclusion limits in the signal cross section in the mZ ′ - mA phase space. For example, the observed data exclude the Z′ mass range from 600 to 1860 GeV, for Z′ coupling strength gZ ′ = 0.8, the coupling of A with dark matter particles gχ = 1, the ratio of the vacuum expectation values tan β = 1, and mA = 300 GeV. The results of this analysis are valid for any dark matter particle mass below 100 GeV.
Date Issued
2017-10-25
Online Publication Date
2017-10-25
2017-12-07T10:42:46Z
Date Acceptance
2017-10-06
ISSN
1029-8479
Publisher
SPRINGER
Journal / Book Title
JOURNAL OF HIGH ENERGY PHYSICS
Volume
2017
Issue
10
Copyright Statement
© 2017 The Author(s). Open Access.
This article is distributed under the terms of the Creative Commons
Attribution License (
CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/
), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
This article is distributed under the terms of the Creative Commons
Attribution License (
CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/
), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Source Database
web-of-science
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000414813100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Dark matter
Hadron-Hadron scattering (experiments)
Higgs physics
Beyond Standard Model
Supersymmetry
ATLAS DETECTOR
LHC
PARTICLE
01 Mathematical Sciences
02 Physical Sciences
Nuclear & Particles Physics
Publication Status
Published
Article Number
ARTN 180