Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A four-neutrino texture implying bimaximal flavor mixing and reduced
  LSND effect   A four-neutrino effective texture is described, where a sterile neutrino
mixes nearly maximally with the electron neutrino and so, is responsible for
the deficit of solar $\nu_e $'s (according to the large-angle MSW solution or
vacuum solution, of which the former is selected a posteriori). But, while
maximal mixing of muon neutrino with tauon neutrino causes the deficit of
atmospheric $\nu_\mu $'s, the original magnitude of LSND effect is reduced by
as much as four orders, becoming unobservable.

24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph