7 research outputs found
TeV-scale bileptons, see-saw type II and lepton flavor violation in core-collapse supernova
Electrons and electron neutrinos in the inner core of the core-collapse
supernova are highly degenerate and therefore numerous during a few seconds of
explosion. In contrast, leptons of other flavors are non-degenerate and
therefore relatively scarce. This is due to lepton flavor conservation. If this
conservation law is broken by some non-standard interactions, electron
neutrinos are converted to muon and tau-neutrinos, and electrons - to muons.
This affects the supernova dynamics and the supernova neutrino signal. We
consider lepton flavor violating interactions mediated by scalar bileptons,
i.e. heavy scalars with lepton number 2. It is shown that in case of TeV-mass
bileptons the electron fermi gas is equilibrated with non-electron species
inside the inner supernova core at a time-scale of order of (1-100) ms. In
particular, a scalar triplet which generates neutrino masses through the
see-saw type II mechanism is considered. It is found that supernova core is
sensitive to yet unprobed values of masses and couplings of the triplet.Comment: accepted to Eur.Phys.J.
Uterine prostaglandin F2α & E2 production and content during the second half of the oestrous cycle of the sheep - possible local control of the uterus by the ovary
Molecular Modeling Studies of Anti-Alzheimer Agents by QSAR, Molecular Docking and Molecular Dynamics Simulations Techniques
Real-time supernova neutrino burst monitor at Super-Kamiokande
We present a real-time supernova neutrino burst monitor at Super-Kamiokande
(SK). Detecting supernova explosions by neutrinos in real time is crucial for
giving a clear picture of the explosion mechanism. Since the neutrinos are
expected to come earlier than light, a fast broadcasting of the detection may
give astronomers a chance to make electromagnetic radiation observations of the
explosions right at the onset. The role of the monitor includes a fast
announcement of the neutrino burst detection to the world and a determination
of the supernova direction. We present the online neutrino burst detection
system and studies of the direction determination accuracy based on simulations
at SK.Comment: 15 pages, 8 figures, accepted for publication in Astroparticle
Physic