Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mixing Angle of Hadrons in QCD: A New View   A new method for calculation of the mixing angle between the hadrons within
QCD sum rules is proposed. In this method, the mixing is expressed in terms of
quark and gluon degrees of freedom. As an application, the detailed calculation
of the mixing angle between heavy cascade baryons Xi_Q and Xi_Q', Q=c,~b is
presented and it is found that the mixing angle between Xi_b (Xi_c) and Xi_b'
(Xi_c') is given by theta_b = 6.4^\circ \pm 1.8 ^\circ (theta_c = 5.5^\circ \pm
1.8^\circ).

37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph