Altmetric

Combined analysis of effective Higgs portal dark matter models

File Description SizeFormat 
1512.06458v4.pdfAccepted version8.01 MBAdobe PDFView/Open
Title: Combined analysis of effective Higgs portal dark matter models
Authors: Beniwal, A
Rajec, F
Savage, C
Scott, P
Weniger, C
White, M
Williams, AG
Item Type: Journal Article
Abstract: We combine and extend the analyses of effective scalar, vector, Majorana and Dirac fermion Higgs portal models of dark matter (DM), in which DM couples to the Standard Model (SM) Higgs boson via an operator of the form ODMH†H. For the fermion models, we take an admixture of scalar ψ¯¯ψ and pseudoscalar ψ¯¯iγ5ψ interaction terms. For each model, we apply constraints on the parameter space based on the Planck measured DM relic density and the LHC limits on the Higgs invisible branching ratio. For the first time, we perform a consistent study of the indirect detection prospects for these models based on the WMAP7/Planck observations of the cosmic microwave background, a combined analysis of 15 dwarf spheroidal galaxies by Fermi-LAT and the upcoming Cherenkov Telescope Array (CTA). We also perform a correct treatment of the momentum-dependent direct search cross section that arises from the pseudoscalar interaction term in the fermionic DM theories. We find, in line with previous studies, that current and future direct search experiments such as LUX and XENON1T can exclude much of the parameter space, and we demonstrate that a joint observation in both indirect and direct searches is possible for high mass weakly interacting massive particles. In the case of a pure pseudoscalar interaction of a fermionic DM candidate, future gamma-ray searches are the only class of experiment capable of probing the high mass range of the theory.
Issue Date: 13-Jun-2016
Date of Acceptance: 28-Jan-2016
URI: http://hdl.handle.net/10044/1/52413
DOI: https://dx.doi.org/10.1103/PhysRevD.93.115016
ISSN: 1550-7998
Publisher: American Physical Society
Journal / Book Title: Physical Review D
Volume: 93
Issue: 11
Copyright Statement: © 2016 American Physical Society
Sponsor/Funder: Science and Technology Facilities Council
Science and Technology Facilities Council (STFC)
Funder's Grant Number: ST-N000838
ST/N000838/1
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
CHERENKOV TELESCOPE ARRAY
AUTOMATIC-GENERATION
FEYNMAN-RULES
CRAB-NEBULA
LHC
SCALAR
BOSON
SEARCHES
PARTICLE
PACKAGE
hep-ph
astro-ph.CO
Publication Status: Published
Article Number: 115016
Appears in Collections:Physics
Astrophysics
Faculty of Natural Sciences



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commonsx