Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-08-27
Phys.Rev. D71 (2005) 021302
Astronomy and Astrophysics
Astrophysics
4 pages, 1 figure, Submitted to Physical Review D, Revised per referee's suggestions
Scientific paper
10.1103/PhysRevD.71.021302
We show that the predicted primordial helium production is significantly reduced when new measurements of the neutron lifetime and the implied enhancement in the weak reaction rates are included in big-bang nucleosynthesis. Therefore, even if a narrow uncertainty in the observed helium abundance is adopted, this brings the constraint on the baryon-to-photon ratio from BBN and the observed helium into better accord with the independent determination of the baryon content deduced from the WMAP spectrum of power fluctuations in the cosmic microwave background,and measurements of primordial deuterium in narrow-line quasar absorption systems at high redshift.
Kajino Taka
Mathews Grant J.
Shima Takanori
No associations
LandOfFree
Big Bang Nucleosynthesis with a New Neutron Lifetime 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 Big Bang Nucleosynthesis with a New Neutron Lifetime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Big Bang Nucleosynthesis with a New Neutron Lifetime will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-210676