371 research outputs found
Neutrinos from supernovae: experimental status
No full textI discuss the state of the art in the search for stellar collapse neutrinos and the perspectives of this field. The implications for neutrino physics of a high statistics supernova neutrino burst detection by the network of operating experiments are also reviewed
Lepton Flavour Violation Experiments in LHC Era
No full textI review the present status of Lepton Flavour Violation Experiments involving muons and taus and the future perspectives of this physics field
Latest results from MEG
No full textWe present the status and the perspectives of the MEG experiment which searched for the Lepton Flavour Violating decay μ+→ e+γ for several years. In the full dataset corresponding to 7.4× 1014positive muons stopped on target we didn’t find any evidence for this decay and we set an upper bound on the μ+→ e+γ branching ratio of 4.2×10−13at 90% C.L., with a sensitivity of 5.3×10−13, which improves our previous world best limit by a factor of 1.5 and the best limit set by past experiments by a factor of 30. On the basis of the experience gained in MEG phase I we elaborated an upgrade plan of our detector, which was approved by the host laboratory and is presently in setting-up stage. We discuss here the status of the MEG upgrade (MEG II), which aims to improve the experimental sensitivity by a further order of magnitude
Search for Rare Particles with the MACRO Detector
No full textWe present the results of the search for rare particles (magnetic monopoles, nuclearites, WIMPs and LIPs) with the MACRO detector. For magnetic monopoles (the main goal of the experiment) our limit is approximately 0.4 times the Parker bound for 10^(-4) < beta < 10^(-1)
SEARCH FOR SUPERMASSIVE MAGNETIC MONOPOLES WITH THE MACRO DETECTOR AT THE GRAN SASSO LABORATORY
No full textWe present the results of the search for supermassive magnetic monopoles with the MACRO experiment. Our detector is equipped with three independent subdetectors (liquid scintillation counters, limited streamer tubes and nuclear track detectors), operating in different ranges of monopole velocity. In several years of data taking no candidates were found; the present flux upper limits are at the level of half the Parker Bound for beta > 10(-4); for 10(-4) < beta < 5 x 10(-2) the limit is the best existing
Latest results of the MEG experiment
No full textWe present recent results of the MEG experiment, which has been searching for the Lepton Flavour Violating decay μ+ → e+ γ
since several years. In a combined dataset corresponding
to 3.6×10^14 stopped muons on target we didn’t find any
evidence for this decay and we established an upper bound
on the μ+ → e+ γ branching ratio of 5.7×10^−13
at 90% C.L., which improves our world best limit by a factor
four. We discuss also the expected final sensitivity of
the MEG experiment
The MEG Experiment at PSI
No full textWe discuss the status of the MEG experiment at the Paul Scherrer Institute (PSI). We review the experimental techniques, the development and building of the apparatus and its expected perfomances
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