Paper (*cross-listing*): gr-qc/0306086
Date: Thu, 19 Jun 2003 10:55:58 GMT (6kb)

Title: SN1987A: Temporal Models

Authors: M.I.Wanas, M.Melek and M.E.Kahil

Categories: gr-qc

Comments: 7 pages LaTex file, published in the Proceedings of MG IX, Vol. 2,
p.1100, World Scientific Pub.(2002)
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It is well known that carriers of astrophysical information are massless
spinning particles. These carriers are photons, neutrinos and, expectedly,
gravitons. All these particles are emitted during supernova events. Information
carried by these particles characterize their sources, but such information are
affected by the trajectories of the carriers. Recently, it is shown that these
trajectories are spin dependent. Knowing these trajectories and the arrival
times of such particles to the detectors, a spin dependent model is constructed
and compared with the conventional spin independent model.

\\ ( http://arXiv.org/abs/gr-qc/0306086 , 6kb)

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Paper (*cross-listing*): hep-ph/0605033
Date: Wed, 3 May 2006 15:14:12 GMT (519kb)

Title: Topical Review on "Beta-beams"

Authors: Cristina Volpe (Institut de Physique Nucleaire Orsay, France)

Comments: Topical Review for Journal of Physics G: Nuclear and Particle Physics
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Neutrino physics is traversing an exciting period, after the important
discovery that neutrinos are massive particles, that has implications from
high-energy physics to cosmology. A new method for the production of intense
and pure neutrino beams has been proposed recently: the ``beta-beam''. It
exploits boosted radioactive ions decaying through beta-decay. This novel
concept has been the starting point for a new possible future facility. Its
main goal is to address the crucial issue of the existence of CP violation in
the lepton sector. Here we review the status and the recent developments with
beta-beams. We discuss the original, the medium and high-energy scenarios as
well as mono-chromatic neutrino beams produced through ion electron-capture.
The issue of the degeneracies is mentioned. An overview of low energy
beta-beams is also presented. These beams can be used to perform experiments of
interest for nuclear structure, for the study of fundamental interactions and
for nuclear astrophysics.

\\ ( http://arXiv.org/abs/hep-ph/0605033 , 519kb)

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Paper (*cross-listing*): nucl-th/0604046
Date: Wed, 19 Apr 2006 16:03:12 GMT (39kb)

Title: Reconstructing supernova-neutrino spectra using low-energy beta-beams

Authors: N. Jachowicz and G. C. McLaughlin

Comments: 4 pages
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Only weakly interacting, neutrinos are the principal messengers reaching us
from the center of a supernova. Terrestrial neutrino telescopes, such as SNO
and SuperKamiokande, can provide precious information about the processes in
the core of a collapsing and exploding star. But the information about the
supernova that a neutrino detector can supply, is restricted by the fact that
little experimental data on the neutrino-nucleus cross sections exists and by
the uncertainties in theoretical calculations. In this letter, we propose a
novel procedure that determines the response of a target nucleus in a
supernova-neutrino detector directly, by using low-energy beta-beams. We show
that fitting 'synthetic' spectra, constructed by taking linear combinations of
beta-beam spectra, to the original supernova-neutrino spectra reproduces the
folded differential cross sections very accurately. Comparing the response in a
terrestrial detector to these synthetic responses provides a direct way to
determine the main parameters of the supernova-neutrino energy-distribution.

\\ ( http://arXiv.org/abs/nucl-th/0604046 , 39kb)