Semi-inclusive radiative decays of Upsilon(1S)
We discuss in detail the photon spectrum of radiative {upsilon}(1S) decays taking into account a number of results that have recently appeared in the literature. In particular, we show how to consistently combine expressions which are valid in the upper end point region, where NRQCD factorization br...
| Autores: | , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/12482 |
| Acesso em linha: | https://hdl.handle.net/2445/12482 |
| Access Level: | acceso abierto |
| Palavra-chave: | Fenomenologia (Física) Pertorbació (Dinàmica quàntica) Partícules (Física nuclear) Desintegració radioactiva Phenomenological theory (Physics) Particles (Nuclear physics) Perturbation (Quantum dynamics) Radioactive decay |
| Resumo: | We discuss in detail the photon spectrum of radiative {upsilon}(1S) decays taking into account a number of results that have recently appeared in the literature. In particular, we show how to consistently combine expressions which are valid in the upper end point region, where NRQCD factorization breaks down, with those of the central region, where NRQCD factorization holds. An excellent description of data is achieved, but theoretical errors are large. |
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