Energetic neutrinos from heavy-neutralino annihilation in the Sun

Journal Article · Fri Nov 15 00:00:00 EST 1991 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.44.3021· OSTI ID:6157763

Kamionkowski, M ^[1]

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1. Department of Physics and Enrico Fermi Institute, The University of Chicago, Chicago, Illinois (USA) NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois (USA)

Neutralinos may be captured in the Sun and annihilate therein producing high-energy neutrinos. Present limits on the flux of such neutrinos from underground detectors such as Irvine-Michigan-Brookhaven (IMB) and Kamiokande II may be used to rule out certain supersymmetric dark-matter candidates, while in many other supersymmetric models the rates are large enough that if neutralinos {ital do} reside in the galactic halo, observation of a neutrino signal may be possible in the near future. Neutralinos that are either nearly pure Higgsino or a Higgsino-gaugino combination are generally captured in the Sun by a scalar interaction with nuclei in which a virtual lightest Higgs boson is exchanged. If the squark mass is not much greater than the neutralino mass then capture of neutralinos that are primarily gaugino occurs predominantly by spin-dependent scattering off hydrogen in the Sun. Although only neutrinos from annihilation in the Sun are considered here, the neutrino signal from weakly interacting massive particle annihilation in the Earth should be of comparable strength. Detection rates for mixed-state neutralinos are generally higher than those for Higgsinos or gauginos.

• OSTI ID: 6157763
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 44:10; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
NONLUMINOUS MATTER
HIGGS BOSONS
SOLAR NEUTRINOS
DETECTION
ANNIHILATION
ASTROPHYSICS
MASS
PARTICLE PRODUCTION
QUARKS
STANDARD MODEL
SUPERSYMMETRY
WEAK INTERACTIONS
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
NEUTRINOS
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
RADIATIONS
SOLAR PARTICLES
SOLAR RADIATION
STELLAR RADIATION
SYMMETRY
UNIFIED GAUGE MODELS
662320* - Neutrino Interactions- (1992-)
662120 - General Theory of Particles & Fields- Symmetry
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Currents & Their Properties- (1992-)
661300 - Other Aspects of Physical Science- (1992-)