Using entropy to discriminate annihilation channels in neutralinos making up galactic halos

Details Using entropy to discriminate annihilation channels in neutralinos making up galactic halos Using entropy to discriminate annihilation channels in neutralinos making up galactic halos

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvd..69l3006c&link_type=abstract

Physical Review D, vol. 69, Issue 12, id. 123006

Statistics

Methodology

2

Galactic Halos, Supersymmetric Partners Of Known Particles, Dark Matter

Scientific paper

Applying the microcanonical definition of entropy to a weakly interacting and self-gravitating neutralino gas, we evaluate the change in the local entropy per particle of this gas between the freeze-out era and present day virialized halo structures. An “entropy consistency” criterion emerges by comparing theoretical and empirical estimates of this entropy. We apply this criterion to the cases when neutralinos are mostly B-inos and mostly Higgsinos, in conjunction with the usual “abundance” criterion requiring that present neutralino relic density complies with 0.2<Ωχ˜01<0.4 for h≃0.65. The joint application of both criteria reveals that a much better fitting occurs for the B-ino than for the Higgsino channels, so that the former seems to be a favored channel in the mass range of 155 GeV

Affiliated with

Also associated with

No associations

Rating

Using entropy to discriminate annihilation channels in neutralinos making up galactic halos does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Using entropy to discriminate annihilation channels in neutralinos making up galactic halos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using entropy to discriminate annihilation channels in neutralinos making up galactic halos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1394395