Charmionium (quark c and antiquark c bonded state)

State Energy [MeV]
ηc(1S)
2979.7 ± 1.5
ηc(2S)
3594 ± 5
J/ψ(1S)
3096.87 ± 0.04
Ψ(2S)
3685.96 ± 0.09
χc0(1P)
3415.1 ± 0.8
χc1(1P)
3510.51 ± 0.12
χc2(1P)
3556.16 ± 0.13
 
Source: Particles and fields, Phys. Rev. D., Vol. 66, No 1-I, 2002, p. 719


 
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