5,884 research outputs found
Prospects of detecting massive isosinglet neutrino at LHC in the CMS detector
A possibility to search for a heavy isosinglet (sterile) neutrino using its
decay mode in the - channel production in the CMS experiment is studied. The only
assumption about the heavy neutrino is its nonzero mixing with or
. The corresponding CMS discovery potential expressed in terms of
the heavy neutrino mass and the mixing parameter between the heavy and light
neutrino is determined. It is shown that the heavy neutrino with a mass up to
800 could be detected in CMS. We also investigate the production of the
heavy neutrino mixed with and/or in the model through the reaction with the same heavy neutrino decay channel as
above. We find that for it is possible to discover the heavy
neutrino with a mass up to .Comment: 14 pages, 13 figure
Evaluation of individual-typological features of students of is professional-pedagogical institute
The article deals with the diagnostics results in the sphere of students’ predisposition to the certain sphere of professional activity; the results of distribution between the students’ population into six types of the personalityАнализируются результаты диагностики предрасположенности студентов к определенной сфере профессиональной деятельности; приводятся результаты распределения популяции обследуемых студентов на шесть типов личност
Simulation of the solidification of the melt in the Vanyukov furnace in the case of emergency stoppage
A mathematical model of the Vanyukov furnace, which makes it possible to predict the behavior of an object in the emergency operational mode (upon the disconnection of the oxygen supply) and develop an effective system of additional heating which damps the consequences of the emergency mode and lowers the costs for the renovation of the furnace operation, is created. It is shown how solidification upon cooling the furnace with time is simulated using the enthalpy and porosity method. The mathematical model is adopted for existing production conditions, which are weakly defined. The energy characteristics of the mode for the solidifying furnace bath, which ensures its holding for a long time in the ready state to rapid firing, are found. Thus, the problem of excessively expensive furnace firing after prolonged production stoppage is solved in the conjugated statement with a calculation of the heating system of the overbath space. © 2013 Allerton Press, Inc
Probing lepton flavour violation in scattering and conversion on nucleons
We study lepton flavour-violating interactions which could result in the
-lepton production in the scattering or in
conversion on nucleons at high energies. Phenomenological bounds on the
strength of interactions are extracted from
the combined result of the NOMAD and CHORUS experiments on searching for
oscillations. Some of these bounds supersede limits
from rare decays. We also propose a ``missing energy'' type experiment
searching for conversion on nucleons. The experiment can be
performed at a present accelerator or at a future neutrino factory.Comment: 13 pages, 4 figure
Applicability of QKD: TerraQuantum view on the NSA's scepticism
Quantum communication offers unique features that have no classical analog,
in particular, it enables provably secure quantum key distribution (QKD).
Despite the benefits of quantum communication are well understood within the
scientific community, the practical implementations sometimes meet with
scepticism or even resistance. In a recent publication [1], NSA claims that QKD
is inferior to "quantum-resistant" cryptography and does not recommend it for
use. Here we show that such a sceptical approach to evaluation of quantum
security is not well justified. We hope that our arguments will be helpful to
clarify the issue
H-theorem and Maxwell Demon in Quantum Physics
The Second Law of Thermodynamics states that temporal evolution of an
isolated system occurs with non-diminishing entropy. In quantum realm, this
holds for energy-isolated systems the evolution of which is described by the
so-called unital quantum channel. The entropy of a system evolving in a
non-unital quantum channel can, in principle, decrease. We formulate a general
criterion of unitality for the evolution of a quantum system, enabling a simple
and rigorous approach for finding and identifying the processes accompanied by
decreasing entropy in energy-isolated systems. We discuss two examples
illustrating our findings, the quantum Maxwell demon and heating-cooling
process within a two-qubit system.Comment: 7 pages, 2 figures, IV International Conference on Quantum
Technologie
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