Limits from Astrophysics and Cosmology

Number Coupling with Less Than Full Weak Strength INSPIRE search

VALUE DOCUMENT ID TECN
• • • We do not use the following data for averages, fits, limits, etc. • • •
$<20$ 1
OLIVE
1981C
COSM
$<20$ 1
STEIGMAN
1979
COSM
1  Limit varies with strength of coupling. See also WALKER 1991 .
  References:
OLIVE 1981C
NP B180 497 Limits on New Superweakly Interacting Particles from Primordial Nucleosynthesis
STEIGMAN 1979
PRL 43 239 Cosmological Constraints on Superweak Particles