Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the MSW $\nu_e \to \nu_s$ transition solution of the solar neutrino
  problem   We study the stability of the two--neutrino MSW solution of the solar
neutrino problem, corresponding to solar $\nu_e$ transitions into sterile
neutrino, $\nu_e \rightarrow \nu_s$, with respect to changes of the total
fluxes of $^{8}$B and $^{7}$Be neutrinos, $\Phi_{{\rm B}}$ and $\Phi_{{\rm
Be}}$. For any value of $\Phi_{{\rm Be}}$ from the interval $0.7\Phi^{{\rm
BP}}_{{\rm Be}}\leq \Phi_{{\rm Be}} \leq 1.3\Phi^{{\rm BP}}_{{\rm Be}}$ (for
$\Phi_{{\rm Be}} = 0.7\Phi^{{\rm BP}}_{{\rm Be}}$) the $\nu_e \rightarrow
\nu_{s}$ MSW transitions provide at 95\% C.L. a description of the existing
solar neutrino data for $0.40~(0.39)~\Phi^{{\rm BP}}_{{\rm B}} \ltap \Phi_{{\rm
B}} \ltap 36~(40)\Phi^{{\rm BP}}_{{\rm B}}$, $\Phi^{{\rm BP}}_{{\rm B}}$ and
$\Phi^{{\rm BP}}_{{\rm Be}}$ being the fluxes in the solar model of
Bahcall--Pinsonneault from 1992. The corresponding allowed regions of values of
the parameters \dm2 and \sn2, characterizing the solar neutrino transitions,
are derived. The physical implications of the found MSW $\nu_e \rightarrow
\nu_s$ solutions for the future solar neutrino experiments are considered as
well.

30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg