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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2307.12069 |
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| _version_ | 1866911786933944320 |
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| author | Chen, Chang Meng, Ce Xiao, Zhiguang Zheng, Han-Qing |
| author_facet | Chen, Chang Meng, Ce Xiao, Zhiguang Zheng, Han-Qing |
| contents | Recently LHCb experimental group find an exotic state $T^+_{cc}$ from the process $p\bar{p} \to D^0D^0π^+ + X$. A key question is if it is just a molecule or may have confined tetraquark ingredient. To investigate this, different methods are taken, including two channel ($D^{*+}D^0$ and $D^{*0}D^+$) K-matrix unitarization and single channel Flatté-like parametrization method analysed by pole counting rule and spectral density function sum rule. It demonstrates that $T^+_{cc}$ is a molecular state, though the possibility that there may exist elementary ingredient can not be excluded, by rough analysis on its production rate. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_12069 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Some remarks on compositeness of $T^+_{cc}$ Chen, Chang Meng, Ce Xiao, Zhiguang Zheng, Han-Qing High Energy Physics - Phenomenology Recently LHCb experimental group find an exotic state $T^+_{cc}$ from the process $p\bar{p} \to D^0D^0π^+ + X$. A key question is if it is just a molecule or may have confined tetraquark ingredient. To investigate this, different methods are taken, including two channel ($D^{*+}D^0$ and $D^{*0}D^+$) K-matrix unitarization and single channel Flatté-like parametrization method analysed by pole counting rule and spectral density function sum rule. It demonstrates that $T^+_{cc}$ is a molecular state, though the possibility that there may exist elementary ingredient can not be excluded, by rough analysis on its production rate. |
| title | Some remarks on compositeness of $T^+_{cc}$ |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2307.12069 |