Unitarity Limits on the Mass and Radius of Dark Matter Particles

By National Aeronautics and Space Administration

Using partial wave unitarity and the observed density of the Universe, it is show that a stable elementary particle which was once in thermal equilibrium cannot have a mass greater than 340 TeV. An extended object which was once in thermal equilibrium cannot have a radius less than 7.5 x 10(exp -7) fm. A lower limit to the relic abundance of such particles is also found. Griest, Kim and Kamionkowski, Marc NASA-CR-186079, NAS 1.26:186079, FERMILAB-PUB-89/205-A, CFPA-TH-89-013 NSF AST-88-09616; NAGW-1340...

• Format: Paperback
• Language: English
• ISBN: 1792956215
• ISBN13: 9781792956218
• Release Date: January 1
• Publisher: Independently Published
• Length: 26 Pages
• Weight: 0.19 lbs.
• Dimensions: 0.1" x 8.5" x 11.0"