Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Possibility of a New Boson X^0 (214 MeV) in Sigma^+ -> p mu^+
  mu^-   We consider the existence of the state X^0 (214 MeV) in Sigma^+ -> p mu^+
mu^- decay found by the HyperCP collaboration. We assume that a fundamental
spin zero boson X^0 coupled to quarks leads to flavor changing s -> d X^0
process. We estimate the scalar and pseudoscalar coupling constants by
considering Sigma^+ -> p X^0 and K^+ -> pi^+ X^0 processes, and find that
pseudoscalar coupling dominates. We then evaluate the branching ratios for K_L
-> pi^0 pi^0 X^0, pi^+ pi^- X^0 and Omega^- -> Xi^- X^0 decays. All these rates
are found to be in the measurable ranges. We also comment on X^0 coupling to
muons and constraints from muon g-2.

37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat