50,286 research outputs found
The OPERA Experiment
OPERA(Oscillation Project with Emulsion-tRacking Apparatus) is a new detector
concept, iron(lead)-emulsion for a long-baseline neutrino oscillation
experiment. This experiment would perform an appearance search for nu_mu-nu_tau
oscillation in the parameter region indicated by the atmospheric neutrino
anomaly. OPERA can run at the Gran Sasso Laboratory in the proposed NGS
(Neutrino to Gran Sasso) Beam from CERN.Comment: DARK98-Second International Conference on Dark Matter in Astro and
Particle Physics (Heidelberg, Germany
The CNGS Neutrino Beam
The CERN to Gran Sasso Neutrino beam (CNGS) was commissioned at CERN in early
August 2006 and was first sent at low intensity to Gran Sasso on August 17,
2006. The Borexino, LVD and OPERA experiments continued the commissioning of
their detectors and started taking data with practically no dead time. The CNGS
collected several hundred events with clean time distributions.Comment: 11 pages, 14 EPS figures. Lecture given at the 2nd Latin American
School on Cosmic Rays and Astrophysics, Puebla, Mexico, 30th August - 8th
September 200
Polarization effects in tau production by neutrino
We studied polarization effects in tau production by neutrino-nucleon
scattering. Quasi-elastic scattering, resonance production and deep
inelastic scattering processes are taken into account for the CERN-to-Gran
Sasso projects. We show that the tau produced by neutrino has high degree of
polarization, and its spin direction depends non-trivially on the energy and
the scattering angle of tau in the laboratory frame.Comment: 6 pages, 5 eps figures, espcrc2.sty; Proceedings of the 3rd
International Workshop on Neutrino-Nucleus Interactions in the Few GeV Region
(NuInt04), March 17-21, 2004, Gran Sasso, Italy; minor changes, typos in Eq.
(6) correcte
The OPERA experiment
OPERA is a neutrino oscillation experiment designed to perform a nu\_tau
appearance search at long distance in the future CNGS beam from CERN to Gran
Sasso. It is based on the nuclear emulsion technique to distinguish among the
neutrino interaction products the track of a tau produced by a nu\_tau and its
decay tracks. The OPERA detector is presently under construction in the Gran
Sasso underground laboratory, 730 km from CERN, and will receive its first
neutrinos in 2006. The experimental technique is reviewed and the development
of the project described. Foreseen performances in measuring nu\_tau appearance
and also in searching for nu\_e appearance are discussed
Dark matter and IceCube neutrinos
We show that the excess of high energy neutrinos observed by the IceCube
collaboration at energies above 100 TeV might originate from baryon number
violating decays of heavy shadow baryons from mirror sector, which in turn
constitute Dark Matter. Due to tiny mixing between mirror and ordinary
neutrinos, it is possible to explain the specific features of the IceCube
events spectrum.Comment: 5 pages, 3 figures. Talk given at IFAE 2014 conference 9-11 April
2014 Gran Sasso Science Institute And Laboratori Nazionali del Gran Sasso.
The work is done in collaboration with authors of arXiv:1506.09040. arXiv
admin note: substantial text overlap with arXiv:1506.09040 by other author
First Results from the HDMS experiment in the Final Setup
The Heidelberg Dark Matter Search (HDMS) is an experiment designed for the
search for WIMP dark matter. It is using a special configuration of Ge
detectors, to efficiently reduce the background in the low-energy region below
100 keV. After one year of running the HDMS detector prototype in the Gran
Sasso Underground Laboratory, the inner crystal of the detector has been
replaced with a HPGe crystal of enriched Ge. The final setup started
data taking in Gran Sasso in August 2000. The performance and the first results
of the measurement with the final setup are discussed.Comment: 8 pages, revtex, 7 figures, Home Page of Heidelberg Non-Accelerator
Particle Physics Group: http://www.mpi-hd.mpg.de/non_acc
The DAMA/LIBRA apparatus
The 250 kg highly radiopure NaI(Tl) DAMA/LIBRA apparatus, running at
the Gran Sasso National Laboratory (LNGS) of the I.N.F.N., is described.Comment: 37 pages, 27 figure
MONOLITH: a high resolution neutrino oscillation experiment
MONOLITH is a proposed massive magnetized tracking calorimeter at the Gran
Sasso laboratory in Italy, optimized for the detection of atmospheric muon
neutrinos. The main goal is to test the neutrino oscillation hypothesis through
an explicit observation of the full first oscillation swing. The sensitivity
range for this measurement comfortably covers the entire Super-Kamiokande
allowed region. Other measurements include studies of matter effects, the NC/CC
and neutrino/anti-neutrino ratio with atmospheric neutrinos and auxiliary
measurements from the CERN to Gran Sasso neutrino beam. Depending on approval,
data taking with part of the detector could start in 2005. The MONOLITH
detector and its performance are described.Comment: 8 pages, contribution to Les rencontres de Physique de la Vallee
d'Aoste, March 200
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