论文标题
$ b_c \与j/ψ之间的关系，η_c$形式
Relations among $B_c \to J/ψ, η_c$ form factors
论文作者
论文摘要
我们分析了$ b_c \ to j/ψ的参数源，η_c$矩阵元素在广义低能$ b \至c $ c $ emeptonic hamiltonian中。我们考虑非依赖性QCD的扩展，对重夸克自旋对称性术语进行分类，并在选定的运动学范围内用通用功能表示形式。作为输入，SM运算符的$ B_C \ to j/ψ$矩阵元素的晶格QCD结果，我们获得了有关其他形式的信息。还提出了向整个运动学范围的外推。
We analyze the form factors parametrizing the $B_c \to J/ψ, η_c$ matrix elements of the operators in a generalized low-energy $b \to c$ semileptonic Hamiltonian. We consider an expansion in nonrelativistic QCD, classifying the heavy quark spin symmetry breaking terms and expressing the form factors in terms of universal functions in a selected kinematical range. Using as an input the lattice QCD results for the $B_c \to J/ψ$ matrix element of the SM operator, we obtain information on other form factors. The extrapolation to the full kinematical range is also presented.
