A note on the primordial abundance of stau NLSPs

2008/08/31 by Michael Ratz, Kai Schmidt-Hoberg, Martin Wolfgang Winkler · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Pulsars and Gravitational Waves Research #hep-ph

paper · pdf · doi:10.1088/1475-7516/2008/10/026

published as JCAP 0810:026,2008 · 17 pages, 5 figures, discussion on vacuum stability added

arxiv created 2008/10/06 · openalex publication_date 2008/10/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

In scenarios with gravitino lightest supersymmetric particles, there exist strong big bang nucleosynthesis constraints on the abundance of possible stau next-to-lightest supersymmetric particles. We find that in settings with substantial left–right mixing of the stau mass eigenstates these constraints can be evaded even for very long-lived staus.

Citations

• Fate of the false vacuum: Semiclassical theory
• Cosmic abundances of stable particles: Improved analysis
• On anomalous electroweak baryon-number non-conservation in the early universe

Cited by

• Dark Matter Candidates from Particle Physics and Methods of Detection
• 750 GeV diphotons and supersymmetric grand unification

Related

• Gravitino Dark Matter and Light Element Adundances
• Big-bang nucleosynthesis and gravitinos
• The long-lived stau as a thermal relic
• Long-lived staus at the LHC
• Cosmological Constraints in SUSY with Yukawa Unification