Implications of the first observation of $B\to K_1γ$

Details Implications of the first observation of $B\to K_1γ$ Implications of the first observation of $B\to K_1γ$

2004-09-11

arxiv.org/abs/hep-ph/0409133v1

Phys.Rev. D71 (2005) 014009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures

Scientific paper

10.1103/PhysRevD.71.014009

Implications of the recent new measurements of $B\to K_1\gamma$ by Belle are examined. It is shown that the new branching ratio $\calB(B\to K_1(1270)\gamma)$ requires very large form factor compared to the theoretically predicted one. This is an opposite case to $B\to K^*\gamma$ where theory expected larger branching ratio. Possible origins of the discrepancy are discussed.

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