Radiative tail of the three-particle light-cone distribution amplitudes for the Λ b baryon in HQET
Abstract 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 ta...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-07-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP07(2025)108 |
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| Summary: | Abstract 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. |
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| ISSN: | 1029-8479 |