2,490 research outputs found
Search for Sterile Neutrinos at OPERA and other Long--Baseline Experiments
The OPERA experiment at the CNGS beam has observed muon to tau neutrino
oscillations in the atmospheric sector. Based on this result new limits on the
mixing parameters of a massive sterile neutrino may be set. Preliminary results
of the analysis done in the 3+1 neutrino framework are here presented. An
update of the search for sterile neutrinos in the
channel is also given. The status of the searches for sterile neutrinos
performed at other Long--Baseline experiments (MINOS at NuMI beam and SuperK
with the atmospheric flux) is also briefly recalled. Finally, some personal
perspectives are discussed.Comment: 7 pages, Proceedings EPS2015, Vienna 22-29 July 201
The next challenge for neutrinos: the mass ordering
Neutrino physics is nowadays receiving more and more attention as a possible
source of information for the long--standing investigation of new physics
beyond the Standard Model. This is also supported by the recent change of
perspectives in neutrino researches since the discovery period is almost over
and we are entering the phase of precise measurements. Despite the limited
statistics collected for some variables, the three--flavour neutrino framework
seems well strengthening. However some relevant pieces of this framework are
still missing. The amount of a possible CP violation phase and the mass
ordering are among the most challenging and probably those that will be known
in the near future. In this paper we will discuss these two correlated issues
and a very recent new statistical method introduced to get reliable results on
the mass ordering.Comment: 10 pages, 9 figure, proceedings of the ICFNP 2016 conferenc
'A kingdom for a stage'. Shakespeare's theatricalisation of history
Analisi del trattamento della storia nei drammi storici di Shakespear
A new way to determine the neutrino mass hierarchy at reactors
The determination of the neutrino mass ordering is currently pursued by
several experiments and proposals. A very challenging one is its evaluation
from reactor experiments based on the tiny interference effect between the
and oscillations. Current analyses require
several years of data taking and an extreme energy resolution to achieve anyhow
less than 5 . Referring to the JUNO experimental conditions we
developed a completely new technique that would provide a robust 5
measurement in less than six years of running. The two orderings could be
discriminated at the price of allowing for two different values of . This degeneracy on (around
eV) can however be measured at an unprecedented accuracy of much less than
1\%, i.e. eV, within the same analysis. Analogies with the usual
analysis, where the degeneracy is much more
important, are discussed. Evaluation and inclusion of systematic errors and
backgrounds have been performed, the most relevant among them being the
addition of the two remote reactor plants 250 km away. Baselines of each
contributing reactor core and its spatial resolution have been taken into
account. Possible results after two years of running and the foreseen
initially-reduced available reactor power have been studied, too. These results
confirm the very positive perspectives for JUNO to determine the mass ordering
in a vacuum-oscillation dominated region.Comment: 37 pages, 22 figures, in this version added one more appendix about
Chi^2, formal foundation of F as optimal estimator, submitted to JHE
Study and Design of a Control System for generating and detecting Qubits for the Quantum Exchange of Cryptographic Key
We realized a system for quantum information exchange for cryptographic applications. VHDL describes the hardware for lasers driving and data reception; C++ implements the software for system management. The design is integrated on two boards. A synchronization method guarantees the right timing of the system. The unpredictably of qubit transmission is handled by a suitable time-calibrated receiving windows system. Achieved results improve previous system version in performaces and reliability.ope
Toward personalized medicine: human adipose-derived stem cells (ASCs) and xenogenic-free media as enabling tools in tendon tissue engineering strategies.
L'abstract è presente nell'allegato / the abstract is in the attachmen
A Kingdom for a Stage. Shakespeare's Theatricalization of History
Shakespeare's theatrical adaptation of history. Use of dramatic genre
- …