论文标题
$ b_c $ to $η_c$和$ j/ψ$的半衰减衰减在光线
Semileptonic Decay of $B_c$ to $η_c$ and $J/ψ$ on the Light Front
论文作者
论文摘要
我们研究了基础光 - 前量化框架中的$ b_c（0^ - ）$向Charmonia的$ B_C（0^ - ）$的半衰减衰减。明确地，我们根据相应的初始和最终的Valence Light-Front Wave函数计算$ b_c $衰减为$η_c$或$ j/ψ$的过程的弱过渡形式颜色差异。我们还提出了相应的差衰变宽度和分支比率，以及分支衰减的分支比率损坏$η_C'U和$ψ'$。我们观察到计算的形式因子的非物理框架依赖性，这仅归因于包括价光右波函数。基于对当前组件的分析，我们提出了一组首选的帧来计算这些形式。
We study the semileptonic decay of the $B_c (0^-)$ to charmonia through the bottom-to-charm-quark electroweak current in the framework of basis light-front quantization. Explicitly, we calculate the weak transition form factors for processes of $B_c$ decaying into $η_c$ or $J/ψ$ based on the corresponding initial and final valence light-front wave functions both obtained from the basis light-front quantization. We also present the corresponding differential decay width and branching ratios, as well as the branching ratios for decays into the $η_c'$ and the $ψ'$. We observe unphysical frame dependence of the calculated form factors, which is attributed to only including the valence light-front wave functions. Based on the analysis of current component, we propose a preferred set of frames to calculate these form factors.
