Radiative tail of the three-particle light-cone distribution amplitudes for the $Λ_b$ baryon in HQET
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866909601426833408 |
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| author | Feldmann, Thorsten Vladimirov, Daniel |
| author_facet | Feldmann, Thorsten Vladimirov, Daniel |
| contents | We calculate the so-called radiative tail for the three-particle light-cone distribution amplitudes (LCDAs) of the $Λ_b$ baryon, following from the short-distance expansion of the defining light-ray operators in heavy-quark effective theory (HQET). To illustrate the effect of the radiative tail, we introduce a simple (model-dependent) extrapolation to large distances (respectively small momenta), which preserves the analytic properties of the LCDAs in HQET. We observe a similar qualitative behaviour as has been discussed for the $B$-meson case. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_02570 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Radiative tail of the three-particle light-cone distribution amplitudes for the $Λ_b$ baryon in HQET Feldmann, Thorsten Vladimirov, Daniel High Energy Physics - Phenomenology We calculate the so-called radiative tail for the three-particle light-cone distribution amplitudes (LCDAs) of the $Λ_b$ baryon, following from the short-distance expansion of the defining light-ray operators in heavy-quark effective theory (HQET). To illustrate the effect of the radiative tail, we introduce a simple (model-dependent) extrapolation to large distances (respectively small momenta), which preserves the analytic properties of the LCDAs in HQET. We observe a similar qualitative behaviour as has been discussed for the $B$-meson case. |
| title | Radiative tail of the three-particle light-cone distribution amplitudes for the $Λ_b$ baryon in HQET |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.02570 |