Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of the HyperCP Data on $B$ and $\tau$ decays   If the HyperCP three events for the decay of $\Sigma^+\to p\mu^+\mu^-$ are
explained by a new pseudoscalar (axial-vector) boson $X_{P(A)}$ with a mass of
214.3 MeV, we study the constraints on the couplings between $X_{P(A)}$ and
fermions from the experimental data in $K$ and $B$ processes. Some implications
of the new particle on flavor changing $B$ and $\tau$ decays are given.
Explicitly, we show that the decay branching ratios of $B_{s}\to\phi
X_{P(A)}\to \phi\mu^{+}\mu^{-}$, $B_{d}\to K_{0}^{*}(1430){P(A)}\to
K_{0}^{*}(1430)\mu^{+}\mu^{-}$ and $\tau\to\mu X_{P(A)}\to\mu\mu^{+}\mu^{-}$
can be as large as $2.7 (2.8)\times 10^{-6}$, $7.4 (7.5)\times 10^{-7}$ and
$1.7 (0.14)\times 10^{-7}$, respectively.

22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
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
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat