Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-body weak decays of doubly charmed baryons   The hadronic two-body weak decays of the doubly charmed baryons
$\Xi_{cc}^{++}, \Xi_{cc}^+$ and $\Omega_{cc}^+$ are studied in this work. To
estimate the nonfactorizable contributions, we work in the pole model for the
$P$-wave amplitudes and current algebra for $S$-wave ones. For the
$\Xi_{cc}^{++}\to \Xi_c^+\pi^+$ mode, we find a large destructive interference
between factorizable and nonfactorizable contributions for both $S$- and
$P$-wave amplitudes. Our prediction of $\sim 0.70\%$ for its branching fraction
is smaller than the earlier estimates in which nonfactorizable effects were not
considered, but agrees nicely with the result based on an entirely different
approach, namely, the covariant confined quark model. On the contrary, a large
constructive interference was found in the $P$-wave amplitude by Dhir and
Sharma, leading to a branching fraction of order $(7-16)\%$. Using the current
results for the absolute branching fractions of $(\Lambda_c^+,\Xi_c^+)\to p
K^-\pi^+$ and the LHCb measurement of $\Xi_{cc}^{++}\to\Xi_c^+\pi^+$ relative
to $\Xi_{cc}^{++}\to\Lambda_c^+ K^- \pi^+\pi^+$, we obtain
$\B(\Xi_{cc}^{++}\to\Xi_c^+\pi^+)_{\rm expt}\approx (1.83\pm1.01)\%$ after
employing the latest prediction of
$\B(\Xi_{cc}^{++}\to\Sigma_c^{++}\overline{K}^{*0})$. Our prediction of
$\mathcal{B}(\Xi_{cc}^{++}\to\Xi_c^+\pi^+)\approx 0.7\%$ is thus consistent
with the experimental value but in the lower end. It is important to pin down
the branching fraction of this mode in future study. Factorizable and
nonfactorizable $S$-wave amplitudes interfere constructively in
$\Xi_{cc}^+\to\Xi_c^0\pi^+$. Its large branching fraction of order 4\% may
enable experimentalists to search for the $\Xi_{cc}^+$ through this mode. That
is, the $\Xi_{cc}^+$ is reconstructed through the $\Xi_{cc}^+\to\Xi_c^0\pi^+$
followed by the decay chain $\Xi_c^0\to \Xi^-\pi^+\to p\pi^-\pi^-\pi^+$.

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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat