3,226 research outputs found
Nuclear target effect on dark matter detection rate
Expected event rates for a number of dark matter nuclear targets were
calculated in the effective low-energy minimal supersymmetric standard model,
provided the lightest neutralino is the dark matter Weakly Interacting Massive
Particle (WIMP). These calculations allow direct comparison of sensitivities of
different dark matter detectors to intermediate mass WIMPs expected from the
measurements of the DArk MAtter (DAMA) experiment.Comment: 14 pages, 11 figures, revtex
On leading charmed meson production in -nucleon interactions
It is shown that the D--meson, whose light quark is the initial-pion valence
quark and whose charmed quark is produced in annihilation of valence quarks and
has got a large enough momentum, is really a leading meson in reactions like
. If such annihilation of valence quarks from initial hadrons is
impossible there must be no distinct leading effect.Comment: 4 pages, 2.ps-figure
On importance of dark matter for LHC physics
I would like to attract attention of the LHC high-energy physics community to
non-accelerator, low-energy experiments, that are also very sensitive to new
physics. My example concerns search for supersymmetric dark matter particles.
It is shown that non-observation of the SUSY dark matter candidates with a
high-accuracy detector can exclude large domains of the MSSM parameter space
and, in particular, can make especially desirable collider search for light
SUSY charged Higgs boson.Comment: latex, 12 pages, 9 figures, to be published in "Particles and Nuclei,
Letters"; Talk given at the International symposium "LHC physics and
detectors", Dubna, 28--30 June, 200
Are direct search experiments sensitive to all spin-independent WIMP candidates?
The common analysis of direct searches for spin-independent Weakly
Interacting Massive Particles (WIMPs) assumes that a spin-independent WIMP
couples with the same strength with both nucleons, \textit{i.e.} that the
spin-independent interaction is also fully isospin-independent. Though in a
fully isospin-dependent interaction scenario the spin-independent WIMP-nucleus
cross section is strongly quenched, the leading experiments are still sensitive
enough to set limits 1-2 orders of magnitude less stringent than those
traditionally presented. In the isospin-dependent scenario the difference
between the limits of CDMS-II and ZEPLIN-I is significantly reduced. Here, a
model-independent framework is discussed and applied to obtain the current
general model-independent limits.Comment: 4 pages, 4 figures, revtex4.0, submitted to Phys. Rev. Let
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