Supersymmetric dark matter after LHC run 1
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Different mechanisms operate in various regions of the MSSM parameter space to bring the relic density of the lightest neutralino, χ~01χ~10, assumed here to be the lightest SUSY particle (LSP) and thus the dark matter (DM) particle, into the range allowed by astrophysics and cosmology. These mechanisms include coannihilation with some nearly degenerate next-to-lightest supersymmetric particle such as the lighter stau τ~1τ~1, stop t~1t~1 or chargino χ~±1χ~1±, resonant annihilation via direct-channel heavy Higgs bosons H / A, the light Higgs boson h or the Z boson, and enhanced annihilation via a larger Higgsino component of the LSP in the focus-point region. These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10. We analyze how future LHC and direct DM searches can complement each other in the exploration of the different DM mechanisms within these scenarios. We find that the τ~1τ~1 coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for /ET/ET events and long-lived charged particles, whereas their H / A funnel, focus-point and χ~±1χ~1± coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments. We find that the dominant DM mechanism in our pMSSM10 analysis is χ~±1χ~1± coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.
Date Issued
2015-10-23
Date Acceptance
2015-10-05
Citation
European Physical Journal C, 2015, 75 (10)
ISSN
1434-6052
Publisher
Springer Verlag
Journal / Book Title
European Physical Journal C
Volume
75
Issue
10
Copyright Statement
© The Author(s) 2015. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
NONUNIVERSAL HIGGS MASSES
NEUTRALINO RELIC DENSITY
MINIMAL SUPERGRAVITY
STOP COANNIHILATION
STAU COANNIHILATION
BENCHMARK SCENARIOS
YUKAWA UNIFICATION
PARAMETER SPACE
BOSON SEARCHES
MSSM
Publication Status
Published
Article Number
500