Right Handed Virtual Neutrinos are Right Mass to be Dark Matter Particle Jorma Jyrkkanen 2025/03/27

PHYSICS LETTER NARROWING THE FIELD OF POTENTIAL PARTICLES FOR DARK MATTER THE MASS OF THE DARK MATTER PARTICLE HAS BEEN ESTIMATED TO BE BETWEEN 2 < or = MI < or = 5 keV

THE NEUTRINO MUST INTERACT WITH GRAVITY AND MASS AND IT CAN BE SEEN FROM DECAY PRODUCTS OF HIGGS OBTAINED BY W+W- BOSONS AND Z DECAYS THAT NEUTRINOS AND ANTINEUTRINOS ARE GENERATED WHICH OF COURSE WOULD POTENTIALLY ANNIHILATE INTO THE GRAVITONS SPACE-TIME FIELD. HIGGS DECAY MECHANISM FOR NEUTRINOS

Virtual R handed neutrino mass is a good fit.This possibly narrows the field to what it could be. SWISS RESEARCHERS MADE AN ESTMATE OF THIS PARTICLE. Physics Letters B 631 (2005) 151–156 www.elsevier.com/locate/physletb The νMSM, dark matter and neutrino masses Takehiko Asaka ∗, Steve Blanchet, Mikhail Shaposhnikov Institut de Théorie des Phénomènes Physiques, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland Received 3 August 2005; accepted 19 September 2005 Available online 6 October 2005 Editor: G.F. Giudice Abstract We investigate an extension of the Minimal Standard Model by right-handed neutrinos (the νMSM) to incorporate neutrino masses consistent with oscillation experiments. Within this theory, the only candidates for dark matter particles are sterile right-handed neutrinos with masses of a few keV. Requiring that these neutrinos explain entirely the (warm) dark matter, we find that their number is at least three. We show that, in the minimal choice of three sterile neutrinos, the mass of the lightest active neutrino is smaller than O(10−5) eV, which excludes the degenerate mass spectra of three active neutrinos and fixes the absolute mass scale of the other two active neutrinos.  2005 Elsevier B.V. PACS: 14.60.Pq; 98.80.Cq; 95.35.+d 1. Introduction In the past decade, neutrino experiments have pro- vided convincing evidence for neutrino masses and mixings. The anomaly in atmospheric neutrinos is now understood by νμ → ντ oscillation [1], while the solar neutrino puzzle is solved by the oscillation νe → νμ,τ [2,3] incorporating the MSW LMA solu- tion [4]. Current data are consistent with flavor oscil- lations between three active neutrinos, 1 and show that * Corresponding author. E-mail address: asaka@tuhep.phys.tohoku.ac.jp (T. Asaka). 1 We do not include here the LSND anomaly [5], which will be tested in the near future [6]. the mass squared differences are m2 atm = [2.2+0.6 −0.4] × 10−3 eV2 and m2 sol = [8.2+0.3 −0.3] × 10−5 eV2 [7]. These phenomena demand physics beyond the min- imal standard model (MSM), and various possibil- ities to incorporate neutrino masses in the theory have been proposed [8]. The simplest one is adding N right-handed SU(2) × U(1) singlet neutrinos N I (I = 1, . . . , N ) with most general gauge-invariant and renormalizable interactions described by the La- grangian δL = ¯N I i∂μ γ μ N I − f ν I α Φ† ¯N I L α (1)− MI 2 ¯N c I N I + h.c., 0370-2693  2005 Elsevier B.V. doi:10.1016/j.physletb.2005.09.070