Published May 9, 1983
| Version v1
Journal article
Constraint on the photino mass from cosmology
Creators
- 1. Department of Physics, Northeastern University, Boston, Massachusetts 02115
Description
A lower bound for the photino mass m/sub gamma-tilde/ as a function of the spin-0 fermion superpartner mass m/sub f/ is derived as an extension of the calculation of Lee and Weinberg. The Majorana nature of the photino induces a p-wave threshold for annihilation gamma-tildegamma-tilde→ff-bar into light fermions, and leads to a rather unexpected form for the bound: for 25 GeV< or approx. =m/sub f/< or approx. =45 GeV, (m/sub gamma-tilde/)/sub min/approx. =m/sub tau/ = 1.8 GeV; for m/sub f/>45 GeV, (m/sub gamma-tilde/)/sub min/ increases approximately linearly with m/sub f/ to a value of 20 GeV when m/sub f/ = 100 GeV
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 50
- Journal Issue
- 19
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 1419-1422
- ISSN
- 0031-9007
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 14790553
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANNIHILATION; COSMOLOGY; FERMIONS; LIMITING VALUES; MAJORANA THEORY; MASS; PHOTONS; POSTULATED PARTICLES; SUPERSYMMETRY
- Descriptors DEC
- ELEMENTARY PARTICLES; INTERACTIONS; MASSLESS PARTICLES; PARTICLE INTERACTIONS; SYMMETRY