Thermal relic abundances of long-lived staus
arXiv:0808.2462 · doi:10.1016/j.nuclphysb.2008.10.009
Abstract
In supersymmetric models with a long-lived stau being the lightest Standard Model superpartner, the stau abundance during primordial nucleosynthesis is tightly constrained. Considering the complete set of stau annihilation channels in the minimal supersymmetric Standard Model (MSSM) with real parameters for scenarios in which sparticle coannihilations are negligible, we calculate the decoupling of the lighter stau from the primordial plasma and identify processes which are capable to deplete the resulting stau abundance significantly. We find particularly efficient stau annihilation at the resonance of the heavy CP-even Higgs boson and for a lighter stau with a sizeable left-right mixing due to enhanced stau-Higgs couplings. Even within the constrained MSSM, we encounter both effects leading to exceptionally small values of the resulting stau abundance. Prospects for collider phenomenology are discussed and possible implications of our findings are addressed with emphasis on gravitino dark matter scenarios.
34 pages, 8 figures; one reference added; matches published version
References in corpus (34)
- Big-Bang nucleosynthesis (Particle Data Group mini-review)
- micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
- Dark matter direct detection rate in a generic model with micrOMEGAs2.2
- Big-Bang Nucleosynthesis and Gravitino
- Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
- Thermal Gravitino Production and Collider Tests of Leptogenesis
- Thermal production of gravitinos
- Gravitino Dark Matter in R-Parity Breaking Vacua
- Particle physics catalysis of thermal Big Bang Nucleosynthesis
- Constraints on the Reheating Temperature in Gravitino Dark Matter Scenarios
- Flavor effects on leptogenesis predictions
- Gravitino Dark Matter and Cosmological Constraints
- Inflaton Decay in Supergravity
- Bound-State Effects on Light-Element Abundances in Gravitino Dark Matter Scenarios
- Gravitinos from Heavy Scalar Decay
- Stau-catalyzed Li Production in Big-Bang Nucleosynthesis
- News from FormCalc and LoopTools
- Primordial Lithium Abundance in Catalyzed Big Bang Nucleosynthesis
- Implications of Catalyzed BBN in the CMSSM with Gravitino Dark Matter
- Prospects to study a long-lived charged next lightest supersymmetric particle at the LHC
- The number density of a charged relic
- Gravitino Dark Matter Scenarios with Massive Metastable Charged Sparticles at the LHC
- Towards constraints on the SUSY seesaw from flavour-dependent leptogenesis
- Mass Spectrum in R-Parity Violating mSUGRA and Benchmark Points
- MSSM Higgs-boson production in bottom-quark fusion: electroweak radiative corrections
- New constraints on supersymmetric models from b -> s gamma
- Detecting metastable staus and gravitinos at the ILC
- Probing the Reheating Temperature at Colliders and with Primordial Nucleosynthesis
- The Gravitino-Stau Scenario after Catalyzed BBN
- Constraints on Gravitino Dark Matter Scenarios with Long-Lived Charged Sleptons
- Bridging the primordial A=8 divide with Catalyzed Big Bang Nucleosynthesis
- Extremely Long-Lived Charged Massive Particles as A Probe for Reheating of the Universe
- CBBN in the CMSSM
- Supersymmetric Dark Matter Candidates - The Lightest Neutralino, the Gravitino, and the Axino
Cited by in corpus (32)
- Primordial Nucleosynthesis: from precision cosmology to fundamental physics
- Big Bang Nucleosynthesis as a Probe of New Physics
- Dark Matter Candidates - Axions, Neutralinos, Gravitinos, and Axinos
- Hidden gauginos of an unbroken U(1): Cosmological constraints and phenomenological prospects
- Charge-breaking constraints on left-right mixing of stau's
- Gravitino Dark Matter and the Cosmic Lithium Abundances
- Leptogenesis, Gravitino Dark Matter and Entropy Production
- A Re-analysis of Gravitino Dark Matter in the Constrained MSSM
- Gravitino LSP and leptogenesis after the first LHC results
- Stau relic density at the Big-Bang nucleosynthesis era consistent with the abundance of the light element nuclei in the coannihilation scenario
- Cosmology with Long-Lived Charged Massive Particles
- Dark radiation and dark matter in supersymmetric axion models with high reheating temperature
- Axinos in Cosmology and at Colliders
- Direct stau production at hadron colliders in cosmologically motivated scenarios
- The degenerate gravitino scenario
- Non-thermal Gravitino Dark Matter in Gauge Mediation
- Supersymmetric mass spectra for gravitino dark matter with a high reheating temperature
- Upper Limits on the Peccei-Quinn Scale and on the Reheating Temperature in Axino Dark Matter Scenarios
- Superparticle Mass Window from Leptogenesis and Decaying Gravitino Dark Matter
- Late Energy Injection and Cosmological Constraints in Axino Dark Matter Scenarios
- Probing High Reheating Temperature Scenarios at the LHC with Long-Lived Staus
- Reheating Temperature and Gauge Mediation Models of Supersymmetry Breaking
- Long-Lived stop at the LHC with or without R-parity
- A survey for low stau yields in the MSSM
- The long-lived stau as a thermal relic
- Dynamical Matter-Parity Breaking and Gravitino Dark Matter
- Charged Dark Matter in Supersymmetric Twin Higgs models
- LHC signature with long-lived stau in high reheating temperature scenario
- NMSSM with Gravitino Dark Matter to be tested at LHC
- Stau-catalyzed d-t Nuclear Fusion
- Dark matter, mu problem and neutrino mass with gauged R-symmetry
- Parametric Coincidence in the Baryon to Dark Matter Ratio from Affleck-Dine Baryogenesis and UV Freeze-in Dark Matter