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hep-ph2007★ 2 cited
Comparative analysis of non-perturbative effects in B -> X_u l anti-nu_l decays
B. A. Kniehl, G. Kramer, J. -F. Yang
In order to extract the Cabibbo-Kobayashi-Maskawa matrix element |V_{ub}| from B -> X_u l anti-nu_l decays, the overwhelming background from B -> X_c l anti-nu_l decays must be red…
hep-ph2004
Trace anomalies and chiral Ward identities
J. -F. Yang
In a simple abelian spinor field theory, the canonical trace identities for certain axial-vector and axial-scalar operators are reexamined in dimensional regularization, some disag…
hep-ph2001
Dynamical symmetry breaking of massless and renormalization scheme dependence
J. -F. Yang
Through two loop effective potential we demonstrate that the scheme of dimensional regularization and Jackiw's prescription in cut-off regularization allow for the dynam…