At 4.0 ± 0.2 GeV we expect
18
cc states
|
JPC
|
0- +
|
1- -
|
1+ -
|
0+ +
|
1+ +
|
2+ +
|
2- +
|
2- -
|
|
degeneracy
|
1
|
2
|
1
|
1
|
1
|
2
|
1
|
1
|
|
3- -
|
3+ -
|
3+ +
|
4+ +
|
4- +
|
4- -
|
5- -
|
|
2
|
1
|
1
|
1
|
1
|
1
|
1
|
psi(2- -,3836) ,
psi(1- -,4040) ,
psi(1- -,4160) .
The number of expected states grows linearly with mass.