Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Oscillation Physics with a Neutrino Factory   A generation of neutrino experiments have established that neutrinos mix and
probably have mass. The mixing phenomenon points to processes beyond those of
the Standard Model, possibly at the Grand Unification energy scale. A extensive
sequence of of experiments will be required to measure precisely all the
parameters of the neutrino mixing matrix, culminating with the discovery and
study of leptonic CP violation. As a first step, extensions of conventional
pion/kaon decay beams, such as off-axis beams or low-energy super-beams, have
been considered. These could yield first observations of $\nu_\mu \to \nu_e$
transitions at the atmospheric frequency, which have not yet been observed, and
a first measurement of $\theta_{13}$. Experiments with much better flux control
can be envisaged if the neutrinos are obtained from the decays of stored
particles. One such possibility is the concept of beta beams provided by the
decays of radioactive nuclei, that has been developed within the context of
these studies. These would provide a pure (anti-)electron-neutrino beam of a
few hundred MeV, and beautiful complementarity with a high-intensity,
low-energy conventional beam, enabling experimental probes of T violation as
well as CP violation. Ultimately, a definitive and complete set of measurements
would offered by a Neutrino Factory based on a muon storage ring. This powerful
machine offers the largest reach for CP violation, even for very small values
of $\theta_{13}$.

25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an