A. M. Boyarsky, A. Neronov, O. Ruchayskiy, M. E. Shaposhnikov, “The masses of active neutrinos in the <nobr>$\nu$</nobr>MSM from X-ray astronomy”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2006, Volume 83, Issue 4,Pages <nobr>165

This article is cited in 76 papers

GRAVITY, ASTROPHYSICS

The masses of active neutrinos in the $\nu$MSM from X-ray astronomy

A. M. Boyarsky^a, A. Neronov^b, O. Ruchayskiy^c, M. E. Shaposhnikov^d

^a CERN, Theory department, Ch-1211 Geneve 23, Switzerland
^b INTEGRAL Science Data Center, 1290 Versoix, Switzerland and Geneva Observatory, CH-1290 Sauverny, Switzerland
^c Institut des Hautes Études Scientifiques, Bures-sur-Yvette, F-91440, France
^d Ecole Polytechnique Fédérale de Lausanne, Institute of Theoretical Physics, FSB/ITP/LPPC, BSP 720, CH-1015, Lausanne, Switzerland

Abstract: In an extention of the Standard Model by three relatively light right-handed neutrinos (the $\nu$MSM model) the role of the dark matter particle is played by the lightest sterile neutrino. We demonstrate that the observations of the extragalactic X-ray background allow to put a strong upper bound on the mass of the lightest active neutrino and predict the absolute values of the mass of the two heavier active neutrinos in the $\nu$MSM, provided that the mass of the dark matter sterile neutrino is larger than $1.8$ keV.

PACS: 14.60.Pq, 95.35.+d, 98.80.Cq

Received: 26.01.2006

Language: English