Neutralino Annihilation to Gluons
arXiv:hep-ph/9306325 · doi:10.1103/PhysRevD.49.636
Abstract
We present a complete calculation of the cross section for neutralino annihilation into the two-gluon final state. This channel can be quite important for the phenomenology of neutralino annihilation due to the well-known helicity suppression of neutralino annihilation into light quarks and leptons. In addition, we calculate the cross section for annihilation of neutralinos into a gluon and quark-antiquark pair, and discuss QCD corrections to the tree-level cross sections for neutralino annihilation into quarks. If the neutralino is lighter than the top quark, the effect of these results on high-energy neutrino signals from neutralino annihilation in the Sun and in the Earth can be significant, especially if the neutralino is primarily gaugino. On the other hand, our results should have little effect on calculations of the cosmological abundance of neutralinos. We also briefly discuss implications for cosmic-ray antiprotons from neutralino annihilation in the galactic halo.
32 pages, requires harvmac.tex with 7 EPS figures (tarred-compressed-uuencoded submitted separately) complete postscript file also available by anon-ftp at rainbow.uchicago.edu:/pt-preprints/efi-93-38.ps.Z preprint numbers: MAD-PH-766 EFI-93-38 IASSNS-HEP-93/37
References in corpus (1)
Cited by in corpus (43)
- DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
- Fermi LAT Search for Internal Bremsstrahlung Signatures from Dark Matter Annihilation
- Anomaly-Free Gauged R-Symmetry
- Cosmological Relic Density from Minimal Supergravity with Implications for Collider Physics
- Full One-loop Calculation of Neutralino Annihilation into Two Photons
- Cosmic antiprotons as a probe for supersymmetric dark matter?
- Neutralino Annihilation into Two Photons
- Dark matter with -channel mediator: a simple step beyond contact interaction
- Full one-loop corrections to the relic density in the MSSM: A few examples
- Neutrinos From Particle Decay in the Sun and Earth
- Searching for Relic Neutralinos using Neutrino Telescopes
- Indirect signals from light neutralinos in supersymmetric models without gaugino mass unification
- Majorana Dark Matter with a Coloured Mediator: Collider vs Direct and Indirect Searches
- What if Dark Matter Gamma-Ray Lines come with Gluon Lines?
- Signals of Neutralino Dark Matter from Earth and Sun
- Self-annihilation of the neutralino dark matter into two photons or a Z and a photon in the MSSM
- Indirect detection of light neutralino dark matter in the NMSSM
- Relic density at one-loop with gauge boson pair production
- Dark matter annihilations into two light fermions and one gauge boson: general analysis and antiproton constraints
- Internal bremsstrahlung signatures in light of direct dark matter searches
- Cosmic-Ray Antiprotons from Neutralino Annihilation into Gluons
- Further investigation of a relic neutralino as a possible origin of an annual-modulation effect in WIMP direct search
- Amount of Antiprotons in Cosmic Rays due to Halo Neutralino Annihilation
- Investigating light neutralinos at neutrino telescopes
- Combining the data of annual modulation effect in WIMP direct detection with measurements of WIMP indirect searches
- Gamma Rays from Neutralino Annihilation
- Initial State Radiation in Majorana Dark Matter Annihilations
- Radiative corrections to co-annihilation processes
- Closing in on mass-degenerate dark matter scenarios with antiprotons and direct detection
- WIMP Mass Determination with Neutrino Telescopes
- Indirect dark matter searches as a probe of degenerate particle spectra
- Large contributions to dark matter annihilation from three-body final states
- Reconciling Neutralino Relic Density with Yukawa Unified Supersymmetric Models
- Radiative Corrections to the Neutralino Dark Matter Relic Density - an Effective Coupling Approach
- Leading QCD Corrections for Indirect Dark Matter Searches: a Fresh Look
- Dark Matter at the Fermi Scale
- High-energy neutrino signals from the Sun in dark matter scenarios with internal bremsstrahlung
- Exact and Monte Carlo study of adsorption of a self-interacting polymer chain for a family of three-dimensional fractals
- Neutralino annihilation to q qbar g
- Neutralino-neutralino annihilation to photon and gluon pairs in MSSM models
- Tracing Tau-Neutrinos from WIMP-Annihilation
- Neutralino annihilation beyond leading order
- Electroweak lights from Dark Matter annihilations