Gravitinos, the Lithium problem, and DM production: Is there a corresponding neutrino physics linkage?

TL;DR

This paper explores the potential connection between gravitino production, the lithium problem, and neutrino physics, suggesting a possible link between dark matter models and neutrino mass generation.

Contribution

It proposes a model linking 100 GeV gravitinos as dark matter candidates with neutrino physics, based on a phenomenological Lagrangian without supersymmetry.

Findings

Gravitino production constrains lithium isotope levels post-Big Bang

A 2008 model connects 100 GeV dark matter to neutrino mass generation

Potential linkage between gravitinos, dark matter, and neutrino physics

Abstract

Studies are cited indicating that gravitino production acts as a natural upper bound to Li6 and Li7 levels, based on what happens after hadronic decay of relic 1 TeV into 100 GeV gravitinos at 1000 s. after the Big Bang. The produced gravitinos contribute a large fraction of required dark matter density. Whether or not gravitinos can be linked to neutrino production depends on which model of dark matter (DM) is assumed or used. A model presented by the author in 2008 links DM of about 100 GeV -- based on a phenomenological Lagrangian creating different Neutrino masses without SUSY -- with a dark matter candidate of about 100 GeV. This may tie in 100 GeV gravitinos with neutrino physics.