$D$-wave dimeson resonance interpretation to the $Z_c/Z_{cs}/Z_b$ states
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arXiv
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| Natura: | Preprint |
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2025
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| _version_ | 1866915447414194176 |
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| author | Chen, Kan Wang, Jun-Zhang |
| author_facet | Chen, Kan Wang, Jun-Zhang |
| contents | In this work, we construct the $S$-wave, $P$-wave, and $D$-wave $D^{(*)}\bar{D}^{*}_{(s)}$/$B^{(*)}\bar{B}^{*}_{(s)}$ interactions by considering the lowest order contributions from the leading order (LO), next-to-leading order (NLO), and next-to-next-to-next-to-leading order (N$^3$LO) contact terms, respectively. After solving the corresponding Lippmann-Schwinger equation (LSE), we obtain the typical pole trajectory for the $S$-wave/$P$-wave/$D$-wave state. We adjust the $P$-wave low energy constant (LEC) and {accordingly obtain a $P$-wave $D\bar{D}^*/D^*\bar{D}$} resonance state that may correspond to the observed $G(3900)$, { and its $P$-wave $D^*\bar{D}^*$ and $B^{(*)}\bar{B}^{*}$ partners are also predicted}. Then we proceed to adjust the $D$-wave LECs to looking for the $D$-wave $D^{(*)}\bar{D}^{(*)}_{(s)}$/$B^{(*)}\bar{B}^{(*)}_{(s)}$ resonances. The satisfactory consistencies between our results { and the experimental resonance parameters} of $Z_c(3900)$/$Z_c(4020)$, $Z_b(10610)$/$Z_b(10650)$, and $Z_{cs}(4000)$/$Z_{cs}(4220)$ indicate that the $D$-wave resonance interpretation may provide a unified picture to understand these { isovector charmoniumlike states. Especially, the broad width features of $Z_{cs}(4000)$ and $Z_{cs}(4220)$ can be naturally reproduced by interpreting them as $D$-wave $D\bar{D}_s^*$ and $D^*\bar{D}_s^*$ resonances, respectively. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_11127 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | $D$-wave dimeson resonance interpretation to the $Z_c/Z_{cs}/Z_b$ states Chen, Kan Wang, Jun-Zhang High Energy Physics - Phenomenology High Energy Physics - Experiment In this work, we construct the $S$-wave, $P$-wave, and $D$-wave $D^{(*)}\bar{D}^{*}_{(s)}$/$B^{(*)}\bar{B}^{*}_{(s)}$ interactions by considering the lowest order contributions from the leading order (LO), next-to-leading order (NLO), and next-to-next-to-next-to-leading order (N$^3$LO) contact terms, respectively. After solving the corresponding Lippmann-Schwinger equation (LSE), we obtain the typical pole trajectory for the $S$-wave/$P$-wave/$D$-wave state. We adjust the $P$-wave low energy constant (LEC) and {accordingly obtain a $P$-wave $D\bar{D}^*/D^*\bar{D}$} resonance state that may correspond to the observed $G(3900)$, { and its $P$-wave $D^*\bar{D}^*$ and $B^{(*)}\bar{B}^{*}$ partners are also predicted}. Then we proceed to adjust the $D$-wave LECs to looking for the $D$-wave $D^{(*)}\bar{D}^{(*)}_{(s)}$/$B^{(*)}\bar{B}^{(*)}_{(s)}$ resonances. The satisfactory consistencies between our results { and the experimental resonance parameters} of $Z_c(3900)$/$Z_c(4020)$, $Z_b(10610)$/$Z_b(10650)$, and $Z_{cs}(4000)$/$Z_{cs}(4220)$ indicate that the $D$-wave resonance interpretation may provide a unified picture to understand these { isovector charmoniumlike states. Especially, the broad width features of $Z_{cs}(4000)$ and $Z_{cs}(4220)$ can be naturally reproduced by interpreting them as $D$-wave $D\bar{D}_s^*$ and $D^*\bar{D}_s^*$ resonances, respectively. |
| title | $D$-wave dimeson resonance interpretation to the $Z_c/Z_{cs}/Z_b$ states |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2508.11127 |