| Автор | Björn O. Lange |
| Дата выпуска | 2006-01-01 |
| dc.description | A leading-power factorization formula for weight functions relating the B̅X<sub>s</sub>γ photon spectrum to arbitrary partial decay rates in B̅X<sub>u</sub> l<sup>−</sup> is derived. These weight functions are independent of the hadronic shape function and allow for the determination of |V<sub>ub</sub>| in a model-independent way. We calculate the weight function in renormalization-group improved perturbation theory to complete next-to-next-to leading order at the jet scale μ<sub>i</sub><sup>2</sup> ∼ m<sub>b</sub>Λ<sub>QCD</sub> and to next-to leading order at the hard scale μ<sub>h</sub> ∼ m<sub>b</sub>. First-order power corrections are also included, where a model-dependence enters via the appearance of subleading hadronic shape functions. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Shape-function independent relations of charmless inclusive B-decay spectra |
| Тип | paper |
| DOI | 10.1088/1126-6708/2006/01/104 |
| Electronic ISSN | 1029- 8479 |
| Print ISSN | 1126-6708 |
| Журнал | Journal of High Energy Physics |
| Том | 2006 |
| Первая страница | 104 |
| Последняя страница | 104 |
| Выпуск | 01 |
