Light neutralinos with large scattering cross sections in the minimal supersymmetric standard model
- Michigan Center for Theoretical Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
Motivated by recent data from CoGeNT and the DAMA annual modulation signal, we discuss collider constraints on the minimal supersymmetric standard model neutralino dark matter with mass in the 5-15 GeV range. The lightest superpartner (LSP) would be a bino with a small Higgsino admixture. Maximization of the dark matter nucleon scattering cross section for such a weakly interacting massive particle requires a light Higgs boson with tan{beta} enhanced couplings. Limits on the invisible width of the Z boson, combined with the rare decays B{sup {+-}{yields}{tau}{nu},} and the ratio B{yields}D{tau}{nu}/B{yields}Dl{nu}, constrain cross sections to be below {sigma}{sub n} < or approx. 5x10{sup -42} cm{sup 2}. This indicates a higher local dark matter density than is usually assumed by a factor of roughly 6 necessary to explain the CoGeNT excess. This scenario also requires a light charged Higgs boson, which can give substantial contributions to rare decays such as b{yields}s{gamma} and t{yields}bH{sup +}. We also discuss the impact of Tevatron searches for Higgs bosons at large tan{beta}.
- OSTI ID:
- 21407934
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 81, Issue 11; Other Information: DOI: 10.1103/PhysRevD.81.111701; (c) 2010 The American Physical Society; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Neutralino dark matter in the left-right supersymmetric model
Light neutralino dark matter in the next-to-minimal supersymmetric standard model
Related Subjects
B MESONS
B MINUS MESONS
B PLUS MESONS
COUPLING
CROSS SECTIONS
D MESONS
DENSITY
FERMILAB TEVATRON
GEV RANGE
HIGGS BOSONS
MASS
MODULATION
NONLUMINOUS MATTER
NUCLEONS
PARTICLE DECAY
SCATTERING
STANDARD MODEL
SUPERSYMMETRY
TAU NEUTRINOS
Z NEUTRAL BOSONS
ACCELERATORS
BARYONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CHARM PARTICLES
CHARMED MESONS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
HEAVY LEPTONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MESONS
NEUTRINOS
PARTICLE MODELS
PHYSICAL PROPERTIES
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
SYMMETRY
SYNCHROTRONS
UNIFIED GAUGE MODELS