Electroweak Baryogenesis And The Fermi Gamma-Ray Line
arXiv:1302.4781 · doi:10.1103/PhysRevD.87.075011
Abstract
Many particle physics models attempt to explain the 130 GeV gamma-ray feature that the Fermi-LAT observes in the Galactic Center. Neutralino dark matter in non-minimal supersymmetric models, such as the NMSSM, is an especially well-motivated theoretical setup which can explain the line. We explore the possibility that regions of the NMSSM consistent with the 130 GeV line can also produce the observed baryon asymmetry of the universe via electroweak baryogenesis. We find that such regions can in fact accommodate a strongly first-order electroweak phase transition (due to the singlet contribution to the effective potential), while also avoiding a light stop and producing a Standard Model-like Higgs in the observed mass range. Simultaneously, CP-violation from a complex phase in the wino-higgsino sector can account for the observed baryon asymmetry through resonant sources at the electroweak phase transition, while satisfying current constraints from dark matter, collider, and electric dipole moment (EDM) experiments. This result is possible by virtue of a relatively light pseudoscalar Higgs sector with a small degree of mixing, which yields efficient s-channel resonant neutralino annihilation consistent with indirect detection constraints, and of the moderate values of required to obtain a bino-like LSP consistent with the line. The wino mass is essentially a free parameter which one can tune to satisfy electroweak baryogenesis. Thus, the NMSSM framework can potentially explain the origins of both baryonic and dark matter components in the Universe. The tightness of the constraints we impose on this scenario makes it extraordinarily predictive, and conclusively testable in the near future by modest improvements in EDM and dark matter search experiments.
33 pages, 5 figures, 1 table. Submitted to PRD
References in corpus (55)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Dark Matter Results from 225 Live Days of XENON100 Data
- An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
- Electroweak baryogenesis
- CosmoTransitions: Computing Cosmological Phase Transition Temperatures and Bubble Profiles with Multiple Fields
- Improved limit on the permanent electric dipole moment of 199Hg
- NMHDECAY 2.0: An updated program for Sparticle masses, Higgs masses, couplings and decay widths in the NMSSM
- A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
- Resummation in a Hot Scalar Field Theory
- NMHDECAY: A Fortran Code for the Higgs Masses, Couplings and Decay Widths in the NMSSM
- Indirect search for dark matter with micrOMEGAs2.4
- Fermi LAT Search for Internal Bremsstrahlung Signatures from Dark Matter Annihilation
- Baryon Washout, Electroweak Phase Transition, and Perturbation Theory
- Full One-loop Calculation of Neutralino Annihilation into Two Photons
- Fermi LAT Search for Dark Matter in Gamma-ray Lines and the Inclusive Photon Spectrum
- Electroweak Baryogenesis and Dark Matter in the nMSSM
- Relic density of dark matter in the NMSSM
- Fermi LAT Search for Photon Lines from 30 to 200 GeV and Dark Matter Implications
- Improved Results in Supersymmetric Electroweak Baryogenesis
- The Minimal Supersymmetric Fat Higgs Model
- Light Stau Phenomenology and the Higgs γγRate
- The Baryogenesis Window in the MSSM
- Electric Dipole Moments in the MSSM Reloaded
- The Electroweak Phase Transition in a Nonminimal Supersymmetric Model
- Supersymmetric CP-violating Currents and Electroweak Baryogenesis
- Electroweak Phase Transition and Baryogenesis in the nMSSM
- Resonant Relaxation in Electroweak Baryogenesis
- Bubbles in the supersymmetric standard model
- Dark Matter, Light Stops and Electroweak Baryogenesis
- Bino-driven Electroweak Baryogenesis with highly suppressed Electric Dipole Moments
- A New Source for Electroweak Baryogenesis in the MSSM
- On the gauge dependence of vacuum transitions at finite temperature
- Baryogenesis, Electric Dipole Moments and Dark Matter in the MSSM
- Strong Sphalerons and Electroweak Baryogenesis
- Kinetic description of fermion flavor mixing and CP-violating sources for baryogenesis
- Bosonic Thermal Masses in Supersymmetry
- Is the 130 GeV Line Real? A Search for Systematics in the Fermi-LAT Data
- Gravity Waves from a Cosmological Phase Transition: Gauge Artifacts and Daisy Resummations
- Yukawa and Tri-scalar Processes in Electroweak Baryogenesis
- Axial Currents from CKM Matrix CP Violation and Electroweak Baryogenesis
- A 130 GeV photon line from dark matter annihilation in the NMSSM
- Illuminating the 130 GeV Gamma Line with Continuum Photons
- Phase Transitions in the NMSSM
- Yukawa Interactions and Supersymmetric Electroweak Baryogenesis
- Supersymmetric Electroweak Baryogenesis Via Resonant Sfermion Sources
- Enhanced diphoton rates at Fermi and the LHC
- Lepton-mediated electroweak baryogenesis
- Neutralino dark matter and the Fermi gamma-ray lines
- Precision Unification in λSUSY with a 125 GeV Higgs
- Phase Transitions and Gauge Artifacts in an Abelian Higgs Plus Singlet Model
- Singlino-driven Electroweak Baryogenesis in the Next-to-MSSM
- Closing in on Supersymmetric Electroweak Baryogenesis with Dark Matter Searches and the Large Hadron Collider
- Accidental Supersymmetric Dark Matter and Baryogenesis
Cited by in corpus (12)
- Science with the space-based interferometer eLISA. II: Gravitational waves from cosmological phase transitions
- Cosmological Backgrounds of Gravitational Waves
- Detecting gravitational waves from cosmological phase transitions with LISA: an update
- Quantum Transport and Electroweak Baryogenesis
- Cosmological Phase Transitions and their Properties in the NMSSM
- Exploring the CP-violating NMSSM: EDM Constraints and Phenomenology
- Gravitational Waves, baryon asymmetry of the universe and electric dipole moment in the CP-violating NMSSM
- Electroweak Phase Transition in the -invariant NMSSM: Implications of LHC and Dark matter searches and prospects of detecting the gravitational waves
- Electroweak Phase Transition in a Right-Handed Neutrino Superfield Extended NMSSM
- -ino-driven Electroweak Baryogenesis in the UMSSM
- Gamma Rays from Bino-like Dark Matter in the MSSM
- Gravitational waves from patterns of electroweak symmetry breaking: an effective perspective