Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First observation of the Xi- pi+ decay mode of the Xi0(1690) hyperon   We report the first observation of the Xi- pi+ decay mode of the Xi0(1690),
confirming the existence of this resonance. The Xi0(1690) were produced by
Sigma- of 345 Gev/c mean momentum in copper and carbon targets. The mass and
width are close to those observed earlier for the Xi-(1690) in the Lambda K-
decay channel. The product of inclusive production cross section and branching
ratio is given relative to that of the Xi0(1530).

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The categories of this paper are: eess
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph