Form Factors for $B_c^{\ast }\to {\eta }_c+l{\nu }_l$ at NLO in QCD

Wei Tao, Ya-Hui Zhao, Li-Ting Wang +2

We present the Non-Relativistic QCD (NRQCD) calculations at the next-to-leading order (NLO) of ${\alpha }_s$ for $B_c^{\ast }\to {\eta }_c$ vector, axial-vector, tensor and axial-tensor form factors,…