2,462,098 research outputs found

### Discrete transformation for matrix 3-waves problem in three dimensional space

Discrete transformation for 3- waves problem is constructed in explicit form.
Generalization of this system on the matrix case in three dimensional space
together with corresponding discrete transformation is presented also.Comment: LaTeX, 16 page

### Proposed Search for $a^0_0(980)-f_0(980)$ Mixing in Polarization Phenomena

The $K^+$ and $K^0$ meson mass difference induces the mixing of the
$a^0_0(980)$ and $f_0(980)$ resonances, the amplitude of which, between the
$K^+K^-$ and $K^0\bar K^0$ thresholds, is large in magnitude, of the order of $m_{K}\sqrt{m^2_{K^0}-m^2_{K^+}}\approx\sqrt\alpha m^2_K$, and possesses the
phase sharply varying by about 90$^\circ$. We suggest performing the polarized
target experiments on the reaction $\pi^-p\to\eta\pi^0n$ at high energy in
which the fact of the existence of $a^0_0(980)-f_0(980)$ mixing can be
unambiguously and very easily established through the presence of a strong jump
in the azimuthal asymmetry of the $\eta\pi^0$ $S$ wave production cross section
near the $K\bar K$ thresholds. The presented estimates of the polarization
effect to be expected in experiment are to a great extent model independent.Comment: RevTeX, 9 pages, 1 figure. A number of typographical and grammatical
errors correcte

### Degenerate Neutrinos and CP Violation

We have studied mixing and masses of three left handed Majorana neutrinos in
the model, which assumes exactly degenerate neutrino masses at some "neutrino
unification" scale. Such a simple theoretical ansatz naturally leads to
quasidegenerate neutrinos. The neutrino mass splittings induced by
renormalization effects. In the model we found that the parameters of the
neutrino physics (neutrino mass spectrum, mixing angles and CP violation
phases) are strongly intercorrelated to each other. From these correlations we
got strong bounds on the parameters which could be checked in the oscillation
experiments.Comment: 5 pages, latex, presented at CAPP200

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