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| Format: | Preprint |
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2024
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| Online-Zugang: | https://arxiv.org/abs/2401.05989 |
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| _version_ | 1866917655269605376 |
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| author | Chen, Ping Liu, Zhan-Wei Zhang, Zi-Le Luo, Si-Qiang Wang, Fu-Lai Wang, Jun-Zhang Liu, Xiang |
| author_facet | Chen, Ping Liu, Zhan-Wei Zhang, Zi-Le Luo, Si-Qiang Wang, Fu-Lai Wang, Jun-Zhang Liu, Xiang |
| contents | We investigate the role of the electromagnetic interaction in the formation and decay of the $X(3872)$. The binding properties of the $X(3872)$ are studied by assuming the molecular nature and considering the $S$-$D$ wave mixing, isospin breaking, and coupled channel effects, and in particular the correction from the electromagnetic interaction. The radiative decays can better reflect the difference between the charged and neutral $D\bar D^*$ components, since the electromagnetic interaction explicitly breaks the isospin symmetry. We further study the radiative decay widths with the obtained wave functions for different $D\bar D^*$ channels. We also explore other similar hidden-charm molecular states. The electromagnetic interaction can make the molecule tighter. Our result of the radiative decay width for $X(3872)\rightarrow γJ/ψ$ is in agreement with the experiment. The branching ratio $R_{γψ}$ is less than 1 in our framework, which supports the Belle and BESIII measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_05989 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The role of electromagnetic interaction in the $X(3872)$ and its analogs Chen, Ping Liu, Zhan-Wei Zhang, Zi-Le Luo, Si-Qiang Wang, Fu-Lai Wang, Jun-Zhang Liu, Xiang High Energy Physics - Phenomenology High Energy Physics - Experiment We investigate the role of the electromagnetic interaction in the formation and decay of the $X(3872)$. The binding properties of the $X(3872)$ are studied by assuming the molecular nature and considering the $S$-$D$ wave mixing, isospin breaking, and coupled channel effects, and in particular the correction from the electromagnetic interaction. The radiative decays can better reflect the difference between the charged and neutral $D\bar D^*$ components, since the electromagnetic interaction explicitly breaks the isospin symmetry. We further study the radiative decay widths with the obtained wave functions for different $D\bar D^*$ channels. We also explore other similar hidden-charm molecular states. The electromagnetic interaction can make the molecule tighter. Our result of the radiative decay width for $X(3872)\rightarrow γJ/ψ$ is in agreement with the experiment. The branching ratio $R_{γψ}$ is less than 1 in our framework, which supports the Belle and BESIII measurements. |
| title | The role of electromagnetic interaction in the $X(3872)$ and its analogs |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2401.05989 |