Neutralino dark matter and the Fermi gamma-ray lines
arXiv:1211.5154 · doi:10.1088/1475-7516/2013/02/016
Abstract
Motivated by recent claims of lines in the Fermi gamma-ray spectrum, we critically examine means of enhancing neutralino annihilation into neutral gauge bosons. The signal can be boosted while remaining consistent with continuum photon constraints if a new singlet-like pseudoscalar is present. We consider singlet extensions of the MSSM, focusing on the NMSSM, where a `well-tempered' neutralino can explain the lines while remaining consistent with current constraints. We adopt a complementary numerical and analytic approach throughout in order to gain intuition for the underlying physics. The scenario requires a rich spectrum of light neutralinos and charginos leading to characteristic phenomenological signatures at the LHC whose properties we explore. Future direct detection prospects are excellent, with sizeable spin-dependent and spin-independent cross-sections.
20 pages, 5 figures. v2 Added references, corrected typos. v3 Matches version to appear in JCAP
References in corpus (54)
- Herwig++ Physics and Manual
- Dark Matter Results from 225 Live Days of XENON100 Data
- Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
- micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
- The Well-Tempered Neutralino
- A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
- First dark matter search results from a 4-kg CFI bubble chamber operated in a deep underground site
- Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4.7 fb^-1 of sqrt(s) = 7 TeV proton-proton collision data
- Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects
- The Astrophysical Uncertainties Of Dark Matter Direct Detection Experiments
- Discrete R symmetries for the MSSM and its singlet extensions
- Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at sqrt(s) = 7 TeV
- A unique Z_4^R symmetry for the MSSM
- How Dark Are Majorana WIMPs? Signals from MiDM and Rayleigh Dark Matter
- Fermi 130 GeV gamma-ray excess and dark matter annihilation in sub-haloes and in the Galactic centre
- Full one-loop corrections to the relic density in the MSSM: A few examples
- The generalised NMSSM at one loop: fine tuning and phenomenology
- Loop-induced dark matter direct detection signals from gamma-ray lines
- Strong Evidence for Gamma-ray Line Emission from the Inner Galaxy
- Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
- 130 GeV gamma-ray line and enhancement of in the Higgs triplet model plus a scalar dark matter
- Automatised full one-loop renormalisation of the MSSM I: The Higgs sector, the issue of tan(beta) and gauge invariance
- Automatised full one-loop renormalisation of the MSSM II: The chargino-neutralino sector, the sfermion sector and some applications
- Is the 130 GeV Line Real? A Search for Systematics in the Fermi-LAT Data
- UV Completions of Magnetic Inelastic Dark Matter and RayDM for the Fermi Line(s)
- Two Lines or Not Two Lines? That is the Question of Gamma Ray Spectra
- Unidentified sources in the Fermi-LAT second source catalog: the case for DM subhalos
- An Off-center Density Peak in the Milky Way's Dark Matter Halo?
- Indirect detection of light neutralino dark matter in the NMSSM
- Three Exceptions for Thermal Dark Matter with Enhanced Annihilation to Gamma Gamma
- Search for electroweak production of charginos and neutralinos using leptonic final states in pp collisions at sqrt(s) = 7 TeV
- Nucleon strange quark content from two-flavor lattice QCD with exact chiral symmetry
- Enhanced diphoton rates at Fermi and the LHC
- Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in sqrt(s) = 7 TeV pp collisions with the ATLAS detector
- Composite magnetic dark matter and the 130 GeV line
- Multiple Gamma Lines from Semi-Annihilation
- Gamma-ray Lines in the Fermi Data: is it a Bubble?
- Searching for the continuum spectrum photons correlated to the 130 GeV gamma-ray line
- Galactic Center Radio Constraints on Gamma-Ray Lines from Dark Matter Annihilation
- Gamma Lines without a Continuum: Thermal Models for the Fermi-LAT 130 GeV Gamma Line
- Disentangling Instrumental Features of the 130 GeV Fermi Line
- The 130 GeV Fingerprint of Right-Handed Neutrino Dark Matter
- Fermi-LAT gamma-ray signal from Earth Limb, systematic detector effects and their implications for the 130 GeV gamma-ray excess
- PAMELA and FERMI-LAT limits on the neutralino-chargino mass degeneracy
- Axion-mediated dark matter and Higgs diphoton signal
- Spectral and spatial variations of the diffuse gamma-ray background in the vicinity of the Galactic plane and possible nature of the feature at 130 GeV
- Dipole-interacting Fermionic Dark Matter in positron, antiproton, and gamma-ray channels
- On the spin-dependent sensitivity of XENON100
- Natural explanation for 130 GeV photon line within vector boson dark matter model
- Are Lines From Unassociated Gamma-Ray Sources Evidence For Dark Matter Annihilation?
- The Dark Knight Falters
- Double gamma-ray lines from unassociated Fermi-LAT sources revisited
- Observing Higgs boson production through its decay into gamma-rays: A messenger for Dark Matter candidates
- Gamma-ray lines constraints in the NMSSM
Cited by in corpus (30)
- Beyond Effective Field Theory for Dark Matter Searches at the LHC
- Internal Bremsstrahlung Signature of Real Scalar Dark Matter and Consistency with Thermal Relic Density
- Low-Mass Higgs Bosons in the NMSSM and Their LHC Implications
- Heavy to light Higgs boson decays at NLO in the Singlet Extension of the Standard Model
- Blind spots for neutralino dark matter in the NMSSM
- Two Component Dark Matter : A Possible Explanation of 130 GeV γ-Ray Line from the Galactic Centre
- Gravity-mediated (or Composite) Dark Matter Confronts Astrophysical Data
- Probing Charged Matter Through Higgs Diphoton Decay, Gamma Ray Lines, and EDMs
- Prospects for dark matter detection with inelastic transitions of xenon
- Non-Standard Higgs Decays in U(1) Extensions of the MSSM
- Boosting Higgs decays into gamma and a Z in the NMSSM
- One-loop renormalisation of the NMSSM in SloopS : 1. the neutralino-chargino and sfermion sectors
- One-loop renormalisation of the NMSSM in SloopS 2: the Higgs sector
- Interplay between Fermi gamma-ray lines and collider searches
- The 130 GeV gamma-ray line and generic dark matter model building constraints from continuum gamma rays, radio and antiproton data
- Electroweak Baryogenesis And The Fermi Gamma-Ray Line
- Status and prospects of the nMSSM after LHC Run-1
- Right Sneutrino Dark Matter and a Monochromatic Photon Line
- Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 1. Renormalisation and constraints
- Indirect dark-matter detection with MadDM v3.2 -- Lines and Loops
- General calculation of the cross section for dark matter annihilations into two photons
- 130 GeV gamma ray line and enhanced Higgs di-photon rate from Triplet-Singlet extended MSSM
- Spin-dependent constraints on blind spots for thermal singlino-higgsino dark matter with(out) light singlets
- Hidden Sector Dark Matter with Global -symmetry and Fermi-LAT 130 GeV -ray Excess
- Enhanced lines and box-shaped features in the gamma-ray spectrum from annihilating dark matter in the NMSSM
- Leptogenesis and Dark Matter-Nucleon Scattering Cross Section in the SE6SSM
- Gamma Rays from Bino-like Dark Matter in the MSSM
- Predicting the SUSY breaking scale in SUGRA models with degenerate vacua
- 130GeV gamma-ray line through axion conversion
- Interactions of exotic neutralino dark matter with nucleons in extensions of the MSSM originating from GUTs