Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurements of the branching fractions of $\Lambda_c^+ \to p \eta$ and
  $\Lambda_c^+ \to p \pi^0$ decays at Belle   We report measurements of the branching fractions of singly
Cabibbo-suppressed decays $\Lambda_c^+ \to p \eta$ and $\Lambda_c^+ \to p
\pi^0$ using the full Belle data sample corresponding to an integrated
luminosity of 980.6 $\rm fb^{-1}$. The data were collected by the Belle
detector at the KEKB $e^{+}$$e^{-}$ asymmetric-energy collider. A clear
$\Lambda_c^+$ signal is seen in the invariant mass distribution of $p \eta$.
The signal yield of the $\Lambda_c^+ \to p \eta$ process is $7734 \pm 263$;
from this, we measure the ratio of branching fractions ${\cal B}(\Lambda_c^+
\to p \eta)/{\cal B}(\Lambda_c^+ \to p K^- \pi^+) = (2.258 \pm 0. 077(\rm stat.
) \pm 0.136(\rm syst. ))\times 10^{-2}$, from which we infer the branching
fraction ${\cal B}(\Lambda_c^+ \to p \eta) = (1.42 \pm 0.05(\rm stat.) \pm
0.11(\rm syst.)) \times 10^{-3}$. In addition, no significant signal for
$\Lambda_c^+ \to p \pi^0$ is found so an upper limit on the branching fraction
of ${\cal B}(\Lambda_c^+ \to p \pi^0)<8.0 \times 10^{-5}$ at 90\% credibility
level is set, more than three times better than the best current upper limit.

24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con