• Corpus ID: 118439736

Neutrinos, WMAP, and BBN

@article{Krauss2010NeutrinosWA,
  title={Neutrinos, WMAP, and BBN},
  author={Lawrence Krauss and Cecilia Lunardini and Christ University and Brookhaven National Laboratory},
  journal={arXiv: High Energy Physics - Phenomenology},
  year={2010}
}
New data from WMAP have appeared, related to both the fractional energy density in relativistic species at decoupling and also the primordial helium abundance, at the same time as other independent observational estimates suggest a higher value of the latter than previously estimated. All the data are consistent with the possibility that the effective number of relativistic species in the radiation gas at the time of Big Bang Nucleosynthesis may exceed the value of 3, as expected from a CP… 

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