Cosmological neutrino mass detection: The Best probe of neutrino lifetime
Journal Article
·
· Phys.Rev.Lett.98:171301,2007
Future cosmological data may be sensitive to the effects of a finite sum of neutrino masses even as small as {approx}0.06 eV, the lower limit guaranteed by neutrino oscillation experiments. We show that a cosmological detection of neutrino mass at that level would improve by many orders of magnitude the existing limits on neutrino lifetime, and as a consequence on neutrino secret interactions with (quasi-)massless particles as in majoron models. On the other hand, neutrino decay may provide a way-out to explain a discrepancy {approx}< 0.1 eV between cosmic neutrino bounds and Lab data.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 902547
- Report Number(s):
- FERMILAB-PUB-07-015-A; arXiv eprint number astro-ph/0701699; TRN: US0702947
- Journal Information:
- Phys.Rev.Lett.98:171301,2007, Journal Name: Phys.Rev.Lett.98:171301,2007
- Country of Publication:
- United States
- Language:
- English
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