Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relating Quarkonium Wave Functions at the Origin   Within the context of nonrelativistic potential models, we obtain several
formulas (with varying degrees of rigor) relating the wave functions at the
origin of the $c{\bar c}$, $b{\bar c}$ and $b{\bar b}$ S-wave quarkonium
systems. One of our main results is a model-independent relation which seems to
hold to within 3% for any reasonable choice of interquark potential and any
choice of radial quantum number -- namely, ${|\Psi_{b{\bar c}}(0)|^2 \simeq
|\Psi_{c{\bar c}}(0)|^{1.3}|\Psi_{b{\bar b}}(0)|^{0.7}}$ (the exponents are
motivated in the text). One of the physical consequences of this result is the
following relationship between heavy meson masses which we expect to hold at
about the 10% level: ${M_{B_c^*}-M_{B_c}\simeq (0.7)(M_{J/\psi}
-M_{\eta_c})^{0.65}(M_{\Upsilon}-M_{\eta_b})^{0.35}}$.

2
The categories of this paper are: math
19
The categories of this paper are: eess
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
1
The categories of this paper are: cs