Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Monochromatic Neutrino Beam for U(e3) and CP-Phase   The goal for future neutrino facilities is the determination of the
$[U_{e3}]$ mixing and CP violation in neutrino oscillations. This will require
precision experiments with a very intense neutrino source. Here a novel method
to create a monochromatic neutrino beam based on the recent discovery of nuclei
that decay fast through electron capture is discussed. The boost of such
radioactive ions will generate a monochromatic directional neutrino beam when
decaying at high energy in a storage ring with long straight sections. We show
that the capacity of such a facility to discover new physics is impressive, so
that the principle of energy dependence in the oscillation probability of the
$\nu_e \to \nu_{\mu}$ channel is operational to separate out the two parameters
of the mixing $\theta_{13}$ and of the CP-violating phase $\delta$.

32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg