Inconsistences of the k_T-Factorization in Exclusive B-Meson Decays

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dc.creatorFeng, F.
dc.creatorMa, J. P.
dc.creatorWang, Q.
dc.date2009-01-20
dc.date.accessioned2026-07-07T12:32:06Z
dc.date.available2026-07-07T12:32:06Z
dc.descriptionThe k_T-factorization has been widely used for exclusive decays of B-mesons. In this factorization the pertubative coefficients are extracted from scattering of off-shell partons. Because the off-shellness of partons the extracted pertubative coefficients in general are not gauge-invariant. We show that these perturbative coefficients contain gauge-dependent singularities beyond tree-level. This leads to that the k_T-factorization is gauge-dependent and violated in the general covariant gauge. This is not consistent with expectations of physics. In the factorization there exist two different wave functions for a B-meson in general. We show that the two wave functions satisfy different evolution equations whose solutions are used to re-sum large log's. Based on this fact, the rseummation of large log's at leading log approximation in the widely used k_T-factorization with only one wave function is inconsistent.
dc.description10 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0901.2965
dc.identifierhttp://arxiv.org/abs/0901.2965
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216670
dc.subjectHigh Energy Physics - Phenomenology
dc.titleInconsistences of the k_T-Factorization in Exclusive B-Meson Decays
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