Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-07-27
Phys.Rev. D63 (2001) 043004
Astronomy and Astrophysics
Astrophysics
4 pages, RevTeX, 2 figures .eps. Some typos corrected, figure 1 improved
Scientific paper
10.1103/PhysRevD.63.043004
We test different Big Bang Nucleosynthesis scenarios using the recent results on the Cosmic Microwave Background Anisotropies provided by the BOOMERanG and MAXIMA-1 experiments versus the observed abundances of 4He, D and 7Li. The likelihood analysis, based on Bayesian approach, shows that, in the case of high deuterium abundance, Y_D=(2.0\pm0.5) 10^{-4}, both standard and degenerate BBN are inconsistent with the CMBR measurement at more than 3 \sigma. Assuming low deuterium abundance, Y_D=(3.4\pm0.3) 10^{-5}, the standard BBN model is still inconsistent with present observations at 2 \sigma level, while the degenerate BBN results to be compatible. Unless systematics effects will be found in nuclide abundances and/or in CMBR data analysis this result may be a signal in favour of new physics like a large chemical potential of the relic neutrino-antineutrino background.
Esposito Salvatore
Mangano Gianpiero
Melchiorri Alessandro
Miele Gennaro
Pisanti Ofelia
No associations
LandOfFree
Testing Standard and Degenerate Big Bang Nucleosynthesis with BOOMERanG and MAXIMA-1 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 Testing Standard and Degenerate Big Bang Nucleosynthesis with BOOMERanG and MAXIMA-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing Standard and Degenerate Big Bang Nucleosynthesis with BOOMERanG and MAXIMA-1 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-719604