Prediction for the neutrino mass in the KATRIN experiment from lensing by the galaxy cluster A1689

Abstract

The KATRIN experiment in Karlsruhe Germany will monitor the decay of tritium, which produces an electron-antineutrino. While the present upper bound for its mass is 2 eV/$c^2$, KATRIN will search down to 0.2 eV$/c^2$. If the dark matter of the galaxy cluster Abell 1689 is modeled as degenerate isothermal fermions, the strong and weak lensing data may be explained by degenerate neutrinos with mass of 1.5 eV$/c^2$. Strong lensing data beyond 275 kpc put tension on the standard cold dark matter interpretation. In the most natural scenario, the electron antineutrino will have a mass of 1.5 eV/$c^2$, a value that will be tested in KATRIN.

13 pages, 5 figures

References in corpus (6)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• First Dark Matter Results from the XENON100 Experiment
• Low-threshold analysis of CDMS shallow-site data
• The Highest Resolution Mass Map of Galaxy Cluster Substructure To Date Without Assuming Light Traces Mass: LensPerfect Analysis of Abell 1689
• Primordial Planet Formation

Cited by in corpus (1)

• Why are so many primitive stars observed in the Galaxy halo?