Gravitino or Axino Dark Matter with Reheat Temperature as high as $10^{16}$ GeV

Abstract

A new scheme for lightest supersymmetric particle (LSP) dark matter is introduced and studied in theories of TeV supersymmetry with a QCD axion, $a$, and a high reheat temperature after inflation, $T_R$. A large overproduction of axinos ($\tilde{a}$) and gravitinos ($\tilde{G}$) from scattering at $T_R$, and from freeze-in at the TeV scale, is diluted by the late decay of a saxion condensate that arises from inflation. The two lightest superpartners are $\tilde{a}$, with mass of order the TeV scale, and $\tilde{G}$ with mass $m_{3/2}$ anywhere between the keV and TeV scales, depending on the mediation scale of supersymmetry breaking. Dark matter contains both warm and cold components: for $\tilde{G}$ LSP the warm component arises from $\tilde{a}\to \tilde{G}a$, while for $\tilde{a}$ LSP the warm component arises from $\tilde{G}\to \tilde{a}a$. The free-streaming scale for the warm component is predicted to be of order 1 Mpc (and independent of $m_{3/2}$ in the case of $\tilde{G}$ LSP). $T_R$ can be as high as $10^{16}$ GeV, for any value of $m_{3/2}$, solving the gravitino problem. The PQ symmetry breaking scale $V_{PQ}$ depends on $T_R$ and $m_{3/2}$ and can be anywhere in the range $(10^{10}-10^{16})$ GeV. Detailed predictions are made for the lifetime of the neutralino LOSP decaying to $\tilde{a}+h/Z$ and $\tilde{G}+h/Z/\gamma$, which is in the range of $(10^{-1}-10^6)$m over much of parameter space. For an axion misalignment angle of order unity, the axion contribution to dark matter is sub-dominant, except when $V_{PQ}$ approaches $10^{16}$ GeV.

arXiv comment43 pages, 16 figures

References in corpus (44)

• Freeze-In Production of FIMP Dark Matter
• Largest temperature of the radiation era and its cosmological implications
• Reconciling dwarf galaxies with LCDM cosmology: Simulating a realistic population of satellites around a Milky Way-mass galaxy
• Cold dark matter: controversies on small scales
• The unexpected diversity of dwarf galaxy rotation curves
• Thermally Generated Gauge Singlet Scalars as Self-Interacting Dark Matter
• Production of massive particles during reheating
• Hadronic Decay of Late-Decaying Particles and Big-Bang Nucleosynthesis
• Lyman-alpha constraints on warm and on warm-plus-cold dark matter models
• Squark and gluino production cross sections in pp collisions at $\sqrt{s}$ = 13, 14, 33 and 100 TeV
• CMB-S4 Science Book, First Edition
• Experimental Signatures of Low Energy Gauge Mediated Supersymmetry Breaking
• Thermal production of gravitinos
• Axinos as Dark Matter
• Breathing FIRE: How Stellar Feedback Drives Radial Migration, Rapid Size Fluctuations, and Population Gradients in Low-Mass Galaxies
• Did Something Decay, Evaporate, or Annihilate during Big Bang Nucleosynthesis?
• New Detectors to Explore the Lifetime Frontier
• Dark Matter from Early Decays
• Solving the Cosmological Moduli Problem with Weak Scale Inflation
• SuperWIMP Solutions to Small Scale Structure Problems
• Freeze-In Dark Matter with Displaced Signatures at Colliders
• Can Decaying Particles Raise the Upperbound on the Peccei-Quinn Scale?
• Effects of Unstable Particles on Light-Element Abundances: Lithium versus Deuterium and He3
• Goldstini
• Thermal production of axino Dark Matter
• An assessment of the "too big to fail" problem for field dwarf galaxies in view of baryonic feedback effects
• Solving the Gravitino Problem by Axino
• Dark matter in the Kim-Nilles mechanism
• Gravitino Freeze-In
• Concept for a Future Super Proton-Proton Collider
• Leptogenesis, Gravitino Dark Matter and Entropy Production
• Cosmological aspects of inflation in a supersymmetric axion model
• The Cosmological Axino Problem
• Axion Cosmology with its Scalar Superpartner
• SaxiGUTs and their Predictions
• Constraints on mixed dark matter from anomalous strong lens systems
• Collider signals from slow decays in supersymmetric models with an intermediate-scale solution to the mu problem
• The Spectrum of Goldstini and Modulini
• Solving Cosmological Problems of Supersymmetric Axion Models in an Inflationary Universe
• Thermal leptogenesis and the gravitino problem in the Asaka-Yanagida axion/axino dark matter scenario
• Some necessary conditions for allowing the PQ scale as high as M_{GUT} in SUSY models with an axino or neutralino LSP
• Dark radiation and dark matter in supersymmetric axion models with high reheating temperature
• The Two Faces of Anomaly Mediation
• Anomaly Mediation from Unbroken Supergravity

Cited by in corpus (23)

• The Dawn of FIMP Dark Matter: A Review of Models and Constraints
• Physics Beyond Colliders at CERN: Beyond the Standard Model Working Group Report
• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
• When the Universe Expands Too Fast: Relentless Dark Matter
• Dark Matter Freeze-in Production in Fast-Expanding Universes
• Lower Mass Bounds on FIMP Dark Matter Produced via Freeze-In
• Displaced new physics at colliders and the early universe before its first second
• Probing Dark Matter freeze-in with long-lived particle signatures: MATHUSLA, HL-LHC and FCC-hh
• Heavy stable charged tracks as signatures of non-thermal dark matter at the LHC : a study in some non-supersymmetric scenarios
• Saxion Cosmology for Thermalized Gravitino Dark Matter
• NMSSM From Alternative Deflection in Generalized Deflected Anomaly Mediated SUSY Breaking
• Sgoldstino-less inflation and low energy SUSY breaking
• Axion Dark Radiation: Hubble Tension and Hyper-kamiokande Neutrino Experiment
• Searching for Metastable Particles with Sub-Millimeter Displaced Vertices at Hadron Colliders
• Probing the BSM physics with CMB precision cosmology: an application to supersymmetry
• The Supersymmetric R-Parity Violating Dine-Fischler-Srednicki-Zhitnitsky Axion Model
• Gravitino Thermal Production, Dark Matter, and Reheating of the Universe
• Mass-varying Dark Matter from a Phase Transition
• Reheating and Leptogenesis after Pati-Salam F-term Subcritical Hybrid Inflation
• Common Origin of Warm Dark Matter and Dark Radiation
• Gauge mediation without gravitino problem by virtue of the QCD anomaly
• Fingerprints of freeze-in dark matter in an early matter-dominated era