Dynamical Role of Light Neutral Leptons in Cosmology

Using the Vlasov equation, we show that massive galactic halos cannot be composed of stable neutral leptons of mass < or approx. = 1 MeV. Since most of the mass in clusters of galaxies probably consists of stripped halos, we conclude that the ''missing mass'' in clusters does...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1979-02, Vol.42 (6), p.407-410
Hauptverfasser:	Tremaine, Scott, Gunn, James E.
Format:	Artikel
Sprache:	eng
Schlagworte:	640105 - Astrophysics & Cosmology- Galaxies 640106 - Astrophysics & Cosmology- Cosmology 645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties BOLTZMANN-VLASOV EQUATION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMOLOGY DIFFERENTIAL EQUATIONS ELEMENTARY PARTICLES EQUATIONS FERMIONS GALAXY CLUSTERS HELICITY LEPTONS MASS MASSLESS PARTICLES MATHEMATICAL SPACE MISSING MASS NEUTRINOS PARTICLE PROPERTIES PHASE SPACE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS SPACE
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Using the Vlasov equation, we show that massive galactic halos cannot be composed of stable neutral leptons of mass < or approx. = 1 MeV. Since most of the mass in clusters of galaxies probably consists of stripped halos, we conclude that the ''missing mass'' in clusters does not consist of leptons of mass < or approx. = 1 MeV (e.g., muon or electron neutrinos). Lee and Weinberg's hypothetical heave leptons (mass approx. = 1 GeV) are not ruled out by this argument.
ISSN:	0031-9007
DOI:	10.1103/PhysRevLett.42.407