Radiative B decays to the axial K mesons at next - to - leading order
نویسنده
چکیده
We calculate the branching ratios of B → K1γ at next-to-leading order (NLO) of αs where K1 is the orbitally excited axial vector meson. The NLO decay amplitude is divided into the vertex correction and the hard spectator interaction part. The one is proportional to the weak form factor of B → K1 transition while the other is a convolution between light-cone distribution amplitudes and hard scattering kernel. Using the light-cone sum rule results for the form factor, we have B(B0 → K0 1 (1270)γ) = (0.828 ± 0.335) × 10−5 and B(B0 → K0 1 (1400)γ) = (0.393 ± 0.151) × 10−5. Typeset using REVTEX e-mail: [email protected] 1
منابع مشابه
4 Radiative B decays to the axial K mesons at next - to - leading order Jong - Phil
We calculate the branching ratios of B → K1γ at next-to-leading order (NLO) of αs where K1 is the orbitally excited axial vector meson. The NLO decay amplitude is divided into the vertex correction and the hard spectator interaction part. The one is proportional to the weak form factor of B → K1 transition while the other is a convolution between light-cone distribution amplitudes and hard scat...
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