Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charmless Final States and S--D-wave mixing in the $\psi''$   The $\ppp = \psi(3770)$ resonance is expected to be mainly $c \bar
c(1^3D_1)$, but tensor forces and coupling to charmed particle pairs can mix it
with $\pp(2^3S_1)$ and other states. Implications of this mixing for decays of
$\ppp$ to non-charmed final states are discussed. (i) The ratio $\Gamma(\ppp
\to \gamma + \chi_{c2})/ \Gamma(\ppp \to \gamma + \chi_{c0})$ is expected to be
highly suppressed if $\ppp$ is a pure D-wave state, and is enchanced by mixing.
(ii) The expected decay $\pp \to \rho \pi$ and other ``missing'' modes can
appear as corresponding $\ppp$ partial widths, enhanced by a factor depending
on the mixing angle. General arguments then suggest a branching ratio of about
1%, give or take a factor of 2, for charmless hadronic decays of $\ppp$. (iii)
Enhancements can appear in penguin amplitudes in B decays, $B \to K \eta'$
branching ratios, and direct CP-violating asymmetries in $B \to K \pi$ decays.

28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ