Negatively-Charged Massive Particles as Progenitors for CDM, and Solution to the 6Li and 7Li Problem in Big Bang Nucleosynthesis

Details Negatively-Charged Massive Particles as Progenitors for CDM, and Solution to the 6Li and 7Li Problem in Big Bang Nucleosynthesis Negatively-Charged Massive Particles as Progenitors for CDM, and Solution to the 6Li and 7Li Problem in Big Bang Nucleosynthesis

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dmap.conf..544k&link_type=abstract

DARK MATTER IN ASTROPARTICLE AND PARTICLE PHYSICS. Proceedings of the 6th International Heidelberg Conference. Held 24-28 Septem

Physics

Big Bang Nucleosynthesis, Dark Matter, Early Universe, Stars

Scientific paper

The 6Li abundance observed in metal-poor halo stars exhibits a possible plateau similar to that for 7Li. The observed abundance of 6Li is a factor of 103 larger and that of 7Li is a factor of 3 lower than the abundances predicted in the standard big bang when the baryon-to-photon ratio is fixed by WMAP, so that some mechanism would have produced 6Li and deplete 7Li. We show that both of these abundance anomalies can be explained by the existence of a long-lived massive, negatively-charged leptonic particle during nucleosynthesis. Such particles would capture onto the synthesized nuclei thereby reducing the reaction Coulomb barriers and opening new transfer reaction possibilities, and catalyzing a second round of big bang nucleosynthesis. We perform a fully dynamical calculation of big bang nucleosynthesis taking account of the recombination and many possible nuclear reactions and confirmed that this solution to both of the Li problems can be achieved with or without the additional effects of stellar destruction.

Affiliated with

Also associated with

No associations

Rating

Negatively-Charged Massive Particles as Progenitors for CDM, and Solution to the 6Li and 7Li Problem in Big Bang Nucleosynthesis 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 Negatively-Charged Massive Particles as Progenitors for CDM, and Solution to the 6Li and 7Li Problem in Big Bang Nucleosynthesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Negatively-Charged Massive Particles as Progenitors for CDM, and Solution to the 6Li and 7Li Problem in Big Bang Nucleosynthesis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1341044