Chinese Physics C > 2018, Vol. 42 > Issue(5): 053105 DOI: 10.1088/1674-1137/42/5/053105

The DD^*interaction with isospin zero in an extended hidden gauge symmetry approach

1.
College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
2.
Department of Physics, Peking University, Beijing 100871, China
3.
College of Applied Sciences, Beijing University of Technology, Beijing 100124, China

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Abstract：
The D D ^*interaction via a ρ or ω exchange is constructed within an extended hidden gauge symmetry approach, where the strange quark is replaced by the charm quark in the SU(3) flavor space. With this D D ^*interaction, a bound state slightly lower than the D D ^*threshold is generated dynamically in the isospin zero sector by solving the Bethe-Salpeter equation in the coupled-channel approximation, which might correspond to the X(3872) particle announced by many collaborations. This formulism is also used to study the B B ^*interaction, and a B B ^*bound state with isospin zero is generated dynamically, which has no counterpart listed in the review of the Particle Data Group. Furthermore, the one-pion exchange between the D meson and the D ^*is analyzed precisely, and we do not think the one-pion exchange potential need be considered when the Bethe-Salpeter equation is solved.
- chiral lagrangian,
- charmonium,
- unitarity

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Bao-Xi Sun, Da-Ming Wan and Si-Yu Zhao. The DD ^*interaction with isospin zero in an extended hidden gauge symmetry approach[J]. Chinese Physics C, 2018, 42(5): 053105. doi: 10.1088/1674-1137/42/5/053105

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Received: 2017-11-22
Revised: 2018-02-17

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

The DD^*interaction with isospin zero in an extended hidden gauge symmetry approach

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