Method to measure quarkonium wave function using $B_c$ decay
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917115590606848 |
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| author | Sumino, Yukinari |
| author_facet | Sumino, Yukinari |
| contents | We propose a method that enables a direct experimental probe of the quarkonium wave function defined in potential nonrelativistic QCD (pNRQCD) using the three-body decay of the $B_c$ meson. We show that the momentum distribution of the spectator $c$-quark in the partonic decay is proportional to the absolute square of the momentum-space wave function of the $B_c$ state. It would provide, for the first time, an experimentally accessible probe of the quarkonium wave function. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_01114 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Method to measure quarkonium wave function using $B_c$ decay Sumino, Yukinari High Energy Physics - Phenomenology High Energy Physics - Experiment We propose a method that enables a direct experimental probe of the quarkonium wave function defined in potential nonrelativistic QCD (pNRQCD) using the three-body decay of the $B_c$ meson. We show that the momentum distribution of the spectator $c$-quark in the partonic decay is proportional to the absolute square of the momentum-space wave function of the $B_c$ state. It would provide, for the first time, an experimentally accessible probe of the quarkonium wave function. |
| title | Method to measure quarkonium wave function using $B_c$ decay |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2512.01114 |