Evaporation of WIMPs with arbitrary cross sections

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168840· OSTI ID:6691146

Gould, A ^[1]

---

1. Institute for Advanced Study, Princeton, NJ (USA)

A formula for the evaporation rate of weakly interacting massive particles (WIMPs) from a star is derived for the case of large optical depth. The evaporation rate may be calculated to within a factor of about 2, which implies an accuracy of 2 percent for the corresponding evaporation mass. The formula also gives the correct answer for the case of small optical depth and is thus completely general. In the case of the sun, the evaporation mass is 3.9 GeV for a cross section per baryon of 10 to the -36th sq cm and 2.3 GeV for a cross section of 10 to the -34th sq cm. These cross sections are the approximate range for which WIMPs can solve the solar neutrino problem. 13 refs.

• OSTI ID: 6691146
• Journal Information: Astrophysical Journal; (USA), Vol. 356; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
POSTULATED PARTICLES
EVAPORATION
SOLAR NEUTRINOS
HEAT TRANSFER
MATHEMATICAL MODELS
PARTICLE INTERACTIONS
STAR EVOLUTION
SUN
WEAK INTERACTIONS
BASIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY TRANSFER
FERMIONS
INTERACTIONS
LEPTONS
MAIN SEQUENCE STARS
MASSLESS PARTICLES
NEUTRINOS
PHASE TRANSFORMATIONS
RADIATIONS
SOLAR PARTICLES
SOLAR RADIATION
STARS
STELLAR RADIATION
640104* - Astrophysics & Cosmology- Solar Phenomena