Erratum: Polarization effects inB→K1(1270)+J/ψ

Abstract

The joint angular distribution of the decay B → J/ψV , where V is an axial vector or vector resonance, followed by the subsequent decay processes of the J/ψ and V is calculated using the covariant density method. In particular, the case where V is the axial vector meson K 1 (1270) which decays into Kρ is considered as well as the case that V is the vector meson K * (890) which decays into Kπ.

Infrared singularities in one-loop amplitudes

“…In this talk we discuss a third method which is based on a numerical integration for the loop integrals. This by itself is not a new idea and has been discussed before [13,14,15,16,17,18]. What is new is a simple and compact formula which approximates the integrand of a one-loop QCD amplitude in all infrared singular regions.…”