An Enhanced Cosmological Li6 Abundance as a Potential Signature of Residual Dark Matter Annihilations

Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

24 pages 9 figures

Scientific paper

Residual late-time dark matter particle annihilations during and after Big Bang Nucleosynthesis (BBN) may alter the predicted cosmological abundances of the light elements. Within the constrained minimal supersymmetric extension of the Standard Model (the CMSSM) with a neutralino LSP, we find negligible effects on the abundances of Deuterium, He3, He4 and Li7 predicted by homogeneous BBN, but potentially a large enhancement in the predicted abundance of Li6. This enhancement may be as much as two orders of magnitude in the focus-point WMAP strip and in the coannihilation and funnel regions for large tan beta for small m_{1/2}, and the effect is still significant at large m_{1/2}. However, the potential Li6 enhancement is negligible in the part of the coannihilation strip for tan beta = 10 that survives the latest LHC constraints. A similar enhancement of the \li6 abundance may also be found in a model with common, non-universal Higgs masses (the NUHM1).

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

An Enhanced Cosmological Li6 Abundance as a Potential Signature of Residual Dark Matter Annihilations 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 An Enhanced Cosmological Li6 Abundance as a Potential Signature of Residual Dark Matter Annihilations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Enhanced Cosmological Li6 Abundance as a Potential Signature of Residual Dark Matter Annihilations will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-147249

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.