3,850 research outputs found
Review of Reactor Neutrino Oscillation Experiments
In this document we will review the current status of reactor neutrino
oscillation experiments and present their physics potentials for measuring the
neutrino mixing angle. The neutrino mixing angle is
currently a high-priority topic in the field of neutrino physics. There are
currently three different reactor neutrino experiments, \textsc{Double Chooz},
\textsc{Daya Bay} and \textsc{Reno} and a few accelerator neutrino experiments
searching for neutrino oscillations induced by this angle. A description of the
reactor experiments searching for a non-zero value of is given,
along with a discussion of the sensitivities that these experiments can reach
in the near future.Comment: 15 pages, 4 figure
THE INDETERMINATE PRESENT: AN ESSAY ON QUANTUM MECHANICS AND THE OPEN FUTURE
The dissertation is a defense of the following conditional claim: if there are
objective collapses of the wavefunction, then the future is genuinely open.
Although this is no radically new idea, the strategy I shall use to defend it is
a new one. It proceeds in two main steps. First, building upon the recent
literature on metaphysical indeterminacy in quantum mechanics, I argue
for the view that systems in superposition have be interpreted as objectively
indeterminate state of affairs. Second, I propose an alternative way to think
of openness, according to which the future is open as of t, if and only
if there is an indeterminate state of affair S at t, and S becomes determinate
at t\u2019 (with t\u2019 later than t). To argue for the second step, I will give an
analysis of the objective collapses of the wavefunction as the becoming
determinate of previously indeterminate systems. Furthermore, in
developing my arguments, I will also make some remarks concerning the
ontology of objective collapse interpretations of quantum mechanics, the
issue of whether metaphysical indeterminacy can be at some derivate level
of reality, and the possibility of the openness of the future being an
emergent phenomenon
Modern Physics Letters A c ○ World Scientific Publishing Company Review of Reactor Neutrino Oscillation Experiments
In this document we will review the current status of reactor neutrino oscillation experiments and present their physics potentials for measuring the θ13 neutrino mixing angle. The neutrino mixing angle θ13 is currently a high-priority topic in the field of neutrino physics. There are currently three different reactor neutrino experiments, Double Chooz, Daya Bay and Reno and a few accelerator neutrino experiments searching for neutrino oscillations induced by this angle. A description of the reactor experiments searching for a non-zero value of θ13 is given, along with a discussion of the sensitivities that these experiments can reach in the near future
Missing energy and the measurement of the CP-violating phase in neutrino oscillations
In the next generation of long-baseline neutrino oscillation experiments,
aiming to determine the charge-parity violating phase in the
appearance channel, fine-grained time-projection chambers are expected to play
an important role. In this Letter, we analyze an influence of realistic
detector capabilities on the sensitivity for a setup similar to
that of the Deep Underground Neutrino Experiment. We find that the effect of
the missing energy, carried out by undetected particles, is sizable. Although
the reconstructed neutrino energy can be corrected for the missing energy, the
accuracy of such procedure has to exceed 20\%, to avoid a sizable bias in the
extracted value.Comment: 6 pages, 2 figures. v2 matches the version published in PR
Giant Rashba splitting of quasi-1D surface states on Bi/InAs(110)-(21)
Electronic states on the Bi/InAs(110)-(21) surface and its
spin-polarized structure are revealed by angle-resolved photoelectron
spectroscopy (ARPES), spin-resolved ARPES, and density-functional-theory
calculation. The surface state showed quasi-one-dimensional (Q1D) dispersion
and a nearly metallic character; the top of the hole-like surface band is just
below the Fermi level. The size of the Rashba parameter ()
reached quite a large value (5.5 eV\AA). The present result would provide
a fertile playground for further studies of the exotic electronic phenomena in
1D or Q1D systems with the spin-split electronic states as well as for advanced
spintronic devices.Comment: 8 pages (double column), 7 figures and 1 tabl
Searching for neutrino oscillations with OPERA
The OPERA experiment will search for neutrino oscillations using a muon
neutrino beam and a hybrid emulsion-scintillator detector. Basic principles,
current status and expected performance of the experiment are discussed.Comment: 5 pages, 3 figures, to be published in "Proceedings of XII Lomonosov
conference on Elementary Particle Physics
Site-dependent charge transfer at the Pt(111)-ZnPc interface and the effect of iodine
The electronic structure of ZnPc, from sub-monolayers to thick films, on bare
and iodated Pt(111) is studied by means of X-ray photoelectron spectroscopy
(XPS), X-ray absorption spectroscopy (XAS) and scanning tunneling microscopy
(STM). Our results suggest that at low coverage ZnPc lies almost parallel to
the Pt(111) substrate, in a non-planar configuration induced by Zn-Pt
attraction, leading to an inhomogeneous charge distribution within the molecule
and charge transfer to the molecule. ZnPc does not form a complete monolayer on
the Pt surface, due to a surface-mediated intermolecular repulsion. At higher
coverage ZnPc adopts a tilted geometry, due to a reduced molecule-substrate
interaction. Our photoemission results illustrate that ZnPc is practically
decoupled from Pt, already from the second layer. Pre-deposition of iodine on
Pt hinders the Zn-Pt attraction, leading to a non-distorted first layer ZnPc in
contact with Pt(111)-I or Pt(111)-I
, and a more homogeneous charge
distribution and charge transfer at the interface. On increased ZnPc thickness
iodine is dissolved in the organic film where it acts as an electron acceptor
dopant.Comment: 12 pages, 9 figure
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