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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| Online-Zugang: | https://arxiv.org/abs/2410.13279 |
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| _version_ | 1866929685286354944 |
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| author | Hong, Ki-Hoon Kim, Hyun-Chul Musakhanov, M. M. Rakhimov, N. |
| author_facet | Hong, Ki-Hoon Kim, Hyun-Chul Musakhanov, M. M. Rakhimov, N. |
| contents | We investigate heavy-light quark systems within the framework of the QCD instanton vacuum, focusing on the $N_f = 1$ light flavor case. We derive an effective heavy-light quark interaction from the low-energy QCD partition function and construct a heavy-meson effective Lagrangian. The physical residual mass of heavy mesons, $Λ$, is determined by employing compositeness and normalization conditions. We calculate the masses of $D$ and $B$ mesons and their weak decay constants to the leading order and next-to-leading order in the $1/m_Q$ expansion. The current results for $f_D$ and $f_B$ are in good agreement with recent lattice QCD data and PDG average values. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_13279 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Heavy-light quark systems from the QCD instanton vacuum: $N_f=1$ light flavor case Hong, Ki-Hoon Kim, Hyun-Chul Musakhanov, M. M. Rakhimov, N. High Energy Physics - Phenomenology We investigate heavy-light quark systems within the framework of the QCD instanton vacuum, focusing on the $N_f = 1$ light flavor case. We derive an effective heavy-light quark interaction from the low-energy QCD partition function and construct a heavy-meson effective Lagrangian. The physical residual mass of heavy mesons, $Λ$, is determined by employing compositeness and normalization conditions. We calculate the masses of $D$ and $B$ mesons and their weak decay constants to the leading order and next-to-leading order in the $1/m_Q$ expansion. The current results for $f_D$ and $f_B$ are in good agreement with recent lattice QCD data and PDG average values. |
| title | Heavy-light quark systems from the QCD instanton vacuum: $N_f=1$ light flavor case |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.13279 |