715,469 research outputs found
Generalized mirror matter models
Non-minimal gauge models with exact unbroken improper space-time symmetries
are constructed and their cosmological and astrophysical implications explored.Comment: about 5 page
A CoGeNT confirmation of the DAMA signal
The CoGeNT collaboration has recently reported a rising low energy spectrum
in their ultra low noise germanium detector. This is particularly interesting
as the energy range probed by CoGeNT overlaps with the energy region in which
DAMA has observed their annual modulation signal. We show that the mirror dark
matter candidate can simultaneously explain both the DAMA annual modulation
signal and the rising low energy spectrum observed by CoGeNT. This constitutes
a model dependent confirmation of the DAMA signal and adds weight to the mirror
dark matter paradigm.Comment: About 8 pages, expanded and update
A mirror world explanation for the Pioneer spacecraft anomalies?
We show that the anomalous acceleration of the Pioneer 10/11 spacecraft can
be explained if there is some mirror gas or mirror dust in our solar system.Comment: Latex, 7 pages, accepted in Phys. Lett.
Electroweak Higgs as a pseudo-Goldstone boson of broken scale invariance
We point out that it is possible to associate the electroweak Higgs boson
with the pseudo-Goldstone boson of broken scale invariance, thus resolving the
hierarchy problem in a technically natural way. We illustrate this idea with
two specific gauge models. Besides being consistent with all currently
available experimental data, both models maintain the predictive power of the
standard model, since the first model has only one additional parameter beyond
the standard model, and the second has the same number of free parameters as
the standard model.Comment: 11 pages, discussion added, the version to appear in Phys. Lett.
Detecting mirror matter on Earth via its thermal imprint on ordinary matter
Mirror matter type dark matter can exist on the Earth's surface, potentially
in enhanced concentrations at various anomalous impact sites. Mirror matter
fragments can draw in heat from the ordinary matter environment, radiate mirror
photons and thereby cool the surrounding ordinary matter. We quantify this
effect and suggest that it could be used to help locate mirror matter deposits.
This method, together with the centrifuge technique, seems to provide the most
promising means to experimentally detect mirror matter type dark matter in the
Earth.Comment: 9 page
Have mirror micrometeorites been detected?
Slow-moving ( km/s) 'dark matter particles' have allegedly been
discovered in a recent experiment. We explore the possibility that these slow
moving dark matter particles are small mirror matter dust particles originating
from our solar system. Ways of further testing our hypothesis, including the
possibility of observing these dust particles in cryogenic detectors such as
NAUTILUS, are also discussed.Comment: Few changes, about 8 pages lon
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