Properties of the coupling constants of J/ψ→VP decays

HUANG Jin-Shu; SUN Jun-Feng; LU Gong-Ru; LI Hai-Bo

doi:10.1088/1674-1137/37/7/073103

Chinese Physics C> 2013, Vol. 37> Issue(7) : 073103 DOI: 10.1088/1674-1137/37/7/073103

Properties of the coupling constants of J/ψ→VP decays

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Abstract：
Based on the branching fractions of J/ψ→VP from different experiments, we investigate the properties of the coupling constants of J/ψ→VP decays using a model-dependent approach. We find that the octet coupling constant, g8, of strong interaction is about twice larger than that of the singlet coupling constant g₁; the electromag- netic breaking parameters g_Eⁱ are larger than the mass breaking parameters g_Mⁱ, moreover, the three parameters of the electromagnetic effect are about equal, but the three parameters of the mass effect are obviously different and their uncertainties are also large; and the phase angle between strong and electromagnetic interactions is in the range of 70°-80°. It deepens our understanding of the coupling constant of J/ψ→VP decays.

References

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HUANG Jin-Shu, SUN Jun-Feng, LU Gong-Ru and LI Hai-Bo. Properties of the coupling constants of J/ψ→VP decays[J]. Chinese Physics C, 2013, 37(7): 073103. doi: 10.1088/1674-1137/37/7/073103

HUANG Jin-Shu, SUN Jun-Feng, LU Gong-Ru and LI Hai-Bo. Properties of the coupling constants of J/ψ→VP decays[J]. Chinese Physics C, 2013, 37(7): 073103. doi: 10.1088/1674-1137/37/7/073103 shu

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Received: 2012-09-10
Revised: 2012-10-08

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沈阳化工大学材料科学与工程学院沈阳 110142

Properties of the coupling constants of J/ψ→VP decays

Corresponding author: HUANG Jin-Shu,

Received Date: 2012-09-10
Accepted Date: 2012-10-08
Available Online: 2013-07-05

Abstract: Based on the branching fractions of J/ψ→VP from different experiments, we investigate the properties of the coupling constants of J/ψ→VP decays using a model-dependent approach. We find that the octet coupling constant, g8, of strong interaction is about twice larger than that of the singlet coupling constant g₁; the electromag- netic breaking parameters g_Eⁱ are larger than the mass breaking parameters g_Mⁱ, moreover, the three parameters of the electromagnetic effect are about equal, but the three parameters of the mass effect are obviously different and their uncertainties are also large; and the phase angle between strong and electromagnetic interactions is in the range of 70°-80°. It deepens our understanding of the coupling constant of J/ψ→VP decays.