Is JPC=3-+ molecule possible?

ZHU Wei; LIU Yan-Rui; YAO Tao

doi:10.1088/1674-1137/39/2/023101

Chinese Physics C> 2015, Vol. 39> Issue(2) : 023101 DOI: 10.1088/1674-1137/39/2/023101

Is J^PC=3^-+ molecule possible?

1.
School of Physics, Shandong University, Shandong 250100, China

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Abstract：
The confirmation of charged charmonium-like states indicates that heavy quark molecules should exist. Here we discuss the possibility of a molecule state with J^PC=3^-+. In a one-boson-exchange model investigation for the S wave C=+D^*D₂^* states, one finds that the strongest attraction is in the case J=3 and I=0 for both π and σ exchanges. Numerical analysis indicates that this hadronic bound state might exist if a phenomenological cutoff parameter around 2.3 GeV (1.5 GeV) is reasonable with a dipole (monopole) type form factor in the one-pion-exchange model. The cutoff for binding solutions may be reduced to a smaller value once the σ exchange contribution is included. If a state around the D^*D₂^* threshold (≈4472 MeV) in the channel J/ψω (P wave) is observed, the heavy quark spin symmetry implies that it is not a cc meson and the J^PC are likely to be 3^-+.

References

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ZHU Wei, LIU Yan-Rui and YAO Tao. Is J^PC=3^-+ molecule possible?[J]. Chinese Physics C, 2015, 39(2): 023101. doi: 10.1088/1674-1137/39/2/023101

ZHU Wei, LIU Yan-Rui and YAO Tao. Is J^PC=3^-+ molecule possible?[J]. Chinese Physics C, 2015, 39(2): 023101. doi: 10.1088/1674-1137/39/2/023101 shu

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Received: 2014-05-16
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Is J^PC=3^-+ molecule possible?

Corresponding author: LIU Yan-Rui,

1. School of Physics, Shandong University, Shandong 250100, China

Received Date: 2014-05-16

Accepted Date: 1900-01-01

Available Online: 2015-02-05

Abstract: The confirmation of charged charmonium-like states indicates that heavy quark molecules should exist. Here we discuss the possibility of a molecule state with J^PC=3^-+. In a one-boson-exchange model investigation for the S wave C=+D^*D₂^* states, one finds that the strongest attraction is in the case J=3 and I=0 for both π and σ exchanges. Numerical analysis indicates that this hadronic bound state might exist if a phenomenological cutoff parameter around 2.3 GeV (1.5 GeV) is reasonable with a dipole (monopole) type form factor in the one-pion-exchange model. The cutoff for binding solutions may be reduced to a smaller value once the σ exchange contribution is included. If a state around the D^*D₂^* threshold (≈4472 MeV) in the channel J/ψω (P wave) is observed, the heavy quark spin symmetry implies that it is not a cc meson and the J^PC are likely to be 3^-+.

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