Radiative $B\to K_1$ decays in the light-cone sum rules

Details Radiative $B\to K_1$ decays in the light-cone sum rules Radiative $B\to K_1$ decays in the light-cone sum rules

2006-08-08

arxiv.org/abs/hep-ph/0608087v1

Phys.Rev.D74:074001,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures

Scientific paper

10.1103/PhysRevD.74.074001

The weak form factor for $B\to K_{1B}$ where $K_{1B}$ is the $^1P_1$ state is calculated in the light-cone sum rules (LCSR). Combining the quark model result for the form factor of $B\to K_{1A}$ with $K_{1A}$ being the $^3P_1$ state, we have larger values for $B\to K_1$ form factors than the previous LCSR results. The increased form factors reduce the discrepancy between theory and the experimental data for $B\to K_1 \gamma$. Some phenomenological meanings are also discussed.

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