Low-energy $DD$ scattering in lattice QCD
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866929710039040000 |
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| author | Shi, Pan-Pan Guo, Feng-Kun Liu, Chuan Liu, Liuming Sun, Peng Wu, Jia-Jun Xing, Hanyang |
| author_facet | Shi, Pan-Pan Guo, Feng-Kun Liu, Chuan Liu, Liuming Sun, Peng Wu, Jia-Jun Xing, Hanyang |
| contents | We present the first lattice QCD calculation of single-channel $DD$ scattering with quantum numbers $I(J^P)=1(0^+)$ and $0(1^-)$. The calculation is performed on the $2+1$ flavor Wilson-Clover ensembles with a lattice spacing $a\simeq 0.077$ fm and two different pion masses, $m_π\simeq207$ and $305$ MeV. The scattering parameters are determined using the Lüscher's finite volume method. Our results indicate weak repulsive interaction in the $1(0^+)$ channel and slightly attractive interaction in the $0(1^-)$ channel. The $S$-wave isovector $DD$ scattering length and effective range, extrapolated to the physical pion mass, are $(-0.26\pm0.05)$ fm and $(-5.5\pm2.1)$ fm, respectively. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_07438 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low-energy $DD$ scattering in lattice QCD Shi, Pan-Pan Guo, Feng-Kun Liu, Chuan Liu, Liuming Sun, Peng Wu, Jia-Jun Xing, Hanyang High Energy Physics - Lattice High Energy Physics - Experiment High Energy Physics - Phenomenology We present the first lattice QCD calculation of single-channel $DD$ scattering with quantum numbers $I(J^P)=1(0^+)$ and $0(1^-)$. The calculation is performed on the $2+1$ flavor Wilson-Clover ensembles with a lattice spacing $a\simeq 0.077$ fm and two different pion masses, $m_π\simeq207$ and $305$ MeV. The scattering parameters are determined using the Lüscher's finite volume method. Our results indicate weak repulsive interaction in the $1(0^+)$ channel and slightly attractive interaction in the $0(1^-)$ channel. The $S$-wave isovector $DD$ scattering length and effective range, extrapolated to the physical pion mass, are $(-0.26\pm0.05)$ fm and $(-5.5\pm2.1)$ fm, respectively. |
| title | Low-energy $DD$ scattering in lattice QCD |
| topic | High Energy Physics - Lattice High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.07438 |