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Title: Direct and indirect detection and LHC signals of bino-Higgsino dark matter

Abstract

If the lightest dark matter neutralino has a sufficiently large Higgsino component, its spin-independent and spin-dependent cross sections on nucleons can be sizable enough to be detected soon in direct and indirect surveys. We outline in this paper some characteristic features expected of mixed bino-Higgsino dark matter. If the observed relic density is saturated by the bino-Higgsino dark matter, it fixes the amount of allowable bino-Higgsino mixing and provides predictions for other observables which can be tested at the Large Hadron Collider (LHC). We study the correlation between the cross sections and the branching ratio of B{sub s}{yields}{mu}{sup +}{mu}{sup -}. For a mixed bino-Higgsino dark matter, the mass differences of the neutralinos can be less than M{sub Z}. This will cause an excess of lepton pairs, above the standard model predictions, from the decays of the two heavier neutralinos. We discuss implications of the dilepton invariant mass distribution, and outline a way to extract the neutralino parameters for testing gaugino mass unification and deducing the relic density from an interplay of astrophysical detection and LHC measurements.

Authors:
; ;  [1];  [1]
  1. Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)
Publication Date:
OSTI Identifier:
21541635
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 83; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.83.095007; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASTROPHYSICS; BRANCHING RATIO; CERN LHC; CORRELATIONS; CROSS SECTIONS; DENSITY; DETECTION; FORECASTING; MASS; MASS DIFFERENCE; MASS DISTRIBUTION; MUONS MINUS; NONLUMINOUS MATTER; NUCLEONS; PARTICLE DECAY; SPIN; STANDARD MODEL; ACCELERATORS; ANGULAR MOMENTUM; BARYONS; CYCLIC ACCELERATORS; DECAY; DIMENSIONLESS NUMBERS; DISTRIBUTION; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; LEPTONS; MATHEMATICAL MODELS; MATTER; MUONS; PARTICLE MODELS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; PHYSICS; QUANTUM FIELD THEORY; SPATIAL DISTRIBUTION; STORAGE RINGS; SYNCHROTRONS; UNIFIED GAUGE MODELS

Citation Formats

Gogoladze, Ilia, Khalid, Rizwan, Shafi, Qaisar, Mimura, Yukihiro, and Department of Physics, National Taiwan University, Taipei, Taiwan 10617. Direct and indirect detection and LHC signals of bino-Higgsino dark matter. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.83.095007.
Gogoladze, Ilia, Khalid, Rizwan, Shafi, Qaisar, Mimura, Yukihiro, & Department of Physics, National Taiwan University, Taipei, Taiwan 10617. Direct and indirect detection and LHC signals of bino-Higgsino dark matter. United States. https://doi.org/10.1103/PHYSREVD.83.095007
Gogoladze, Ilia, Khalid, Rizwan, Shafi, Qaisar, Mimura, Yukihiro, and Department of Physics, National Taiwan University, Taipei, Taiwan 10617. Sun . "Direct and indirect detection and LHC signals of bino-Higgsino dark matter". United States. https://doi.org/10.1103/PHYSREVD.83.095007.
@article{osti_21541635,
title = {Direct and indirect detection and LHC signals of bino-Higgsino dark matter},
author = {Gogoladze, Ilia and Khalid, Rizwan and Shafi, Qaisar and Mimura, Yukihiro and Department of Physics, National Taiwan University, Taipei, Taiwan 10617},
abstractNote = {If the lightest dark matter neutralino has a sufficiently large Higgsino component, its spin-independent and spin-dependent cross sections on nucleons can be sizable enough to be detected soon in direct and indirect surveys. We outline in this paper some characteristic features expected of mixed bino-Higgsino dark matter. If the observed relic density is saturated by the bino-Higgsino dark matter, it fixes the amount of allowable bino-Higgsino mixing and provides predictions for other observables which can be tested at the Large Hadron Collider (LHC). We study the correlation between the cross sections and the branching ratio of B{sub s}{yields}{mu}{sup +}{mu}{sup -}. For a mixed bino-Higgsino dark matter, the mass differences of the neutralinos can be less than M{sub Z}. This will cause an excess of lepton pairs, above the standard model predictions, from the decays of the two heavier neutralinos. We discuss implications of the dilepton invariant mass distribution, and outline a way to extract the neutralino parameters for testing gaugino mass unification and deducing the relic density from an interplay of astrophysical detection and LHC measurements.},
doi = {10.1103/PHYSREVD.83.095007},
url = {https://www.osti.gov/biblio/21541635}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 9,
volume = 83,
place = {United States},
year = {2011},
month = {5}
}