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arXiv · 1608.00454

FCNC transition of $B$ to $a_1$ with LCSR

S. Momeni·R. Khosravi
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Abstract

The $B\to a_1 \ell^+ \ell^-$ decays occur by the electroweak penguin and box diagrams which can be performed through the flavor changing neutral current (FCNC). We calculate the form factors of the FCNC $B \to a_1$ transitions in the light--cone sum rules approach, up to twist--4 distribution amplitudes of the axial vector meson $a_1$. Forward--backward asymmetry, as well as branching ratios of $B\to a_1\ell^{+}\ell^{-}$, and $B\to a_1 \gamma$ decays are considered. A comparison is also made between our results and the predictions of other methods.

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S. Momeni, R. Khosravi. 2016-08-01. FCNC transition of $B$ to $a_1$ with LCSR. https://doi.org/10.1103/physrevd.95.016009

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