Renormalization of B-meson distribution amplitudes
| Autor: | Nils Offen, Sébastien Descotes-Genon |
|---|---|
| Přispěvatelé: | Starita, Sabine, Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Quark
Physics Particle physics 010308 nuclear & particles physics Hadron FOS: Physical sciences 01 natural sciences Standard Model Renormalization Scattering amplitude Momentum [PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Factorization [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] 0103 physical sciences B meson 010306 general physics |
| Popis: | We summarize a recent calculation of the evolution kernels of the two-particle B-meson distribution amplitudes $\phi_+$ and $\phi_-$ taking into account three-particle contributions. In addition to a few phenomenological comments, we give as a new result the evolution kernel of the combination of three-particle distribution amplitudes $\Psi_A-\Psi_V$ and confirm constraints on $\phi_+$ and $\phi_-$ derived from the light-quark equation of motion. Comment: 7 pages, 2 figures. Contribution to the proceedings of the Int. Workshop on Effective Field Theories: from the pion to the upsilon. Feb. 2009. Valencia, Spain |
| Databáze: | OpenAIRE |
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