Recently, the Heidelberg- Moscow double beta decay experiment has claimed a detection for a neutrino mass with high significance. Here we consider the impact of this measurement on the determination of the dark energy equation of state. By combining the Heidelberg-Moscow result with the WMAP 3-years data and other cosmological datasets we constrain the equation of state to -1.67 < w < -1.05 at 95% c.l. Interestingly enough, coupled neutrino-dark energy models may be consistent with such equation of state. While future data are certainly needed for a confirmation of the controversial Heildelberg-Moscow claim, our result shows that future laboratory searches for neutrino masses may play a crucial role in the determination of the dark energy properties. (c) 2007 Elsevier B.V. All rights reserved.
The impact of neutrino masses on the determination of dark energy properties / Axel De La, Macorra; Melchiorri, Alessandro; Paolo, Serra; Rachel, Bean. - In: ASTROPARTICLE PHYSICS. - ISSN 0927-6505. - 27:5(2007), pp. 406-410. [10.1016/j.astropartphys.2007.01.007]
The impact of neutrino masses on the determination of dark energy properties
MELCHIORRI, Alessandro;
2007
Abstract
Recently, the Heidelberg- Moscow double beta decay experiment has claimed a detection for a neutrino mass with high significance. Here we consider the impact of this measurement on the determination of the dark energy equation of state. By combining the Heidelberg-Moscow result with the WMAP 3-years data and other cosmological datasets we constrain the equation of state to -1.67 < w < -1.05 at 95% c.l. Interestingly enough, coupled neutrino-dark energy models may be consistent with such equation of state. While future data are certainly needed for a confirmation of the controversial Heildelberg-Moscow claim, our result shows that future laboratory searches for neutrino masses may play a crucial role in the determination of the dark energy properties. (c) 2007 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
