Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on $D_s^* \to D_s \pi^0$ Decay   We calculate the rate for $D_s^* \rightarrow D_s \pi^0$ decay using Chiral
Perturbation Theory. This isospin violating process results from $\pi^0$ -
$\eta$ mixing, and its amplitude is proportional to $(m_d -
m_u)/\bigl(m_s-(m_u+m_d)/2 \bigr)$. Experimental information on the branching
ratio for $D_s^* \rightarrow D_s \pi^0$ can provide insight into the pattern of
$SU(3)$ violation in radiative $D^*$ decays.

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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: supr-con