SCET sum rules for $B\to D_1(2420)$ and $B\to D_1^{\prime }(2430)$ form factors at next-to-leading order

Jun-Wei Zhang, Yong-Kang Huang

We present the first calculation of the $B\to D_1(2420)$ and $B\to D_1^{\prime }(2430)$ transition form factors at $\mathcal{O}({\alpha }_s)$ using light-cone sum rules within the framework of soft-…