论文标题
$λ_{b} $ baryon的半雌性过渡
Semileptonic Transition of $Λ_{b}$ Baryon
论文作者
论文摘要
$λ_b$ baryon的半雌性过渡使用高中心组成夸克模型进行了研究。六维超大$ schr \ ddot {o} dinger $方程以变异方法解决，以获取重型重子的质量和波浪。弱衰减的矩阵元素是根据巴属波函数的重叠积分编写的。确定ISGUR WISE功能是为了计算独家的半衰减衰减$λ_b$ $ $ \ rightArrow $ $ $λ_c$ $ $ \ ell $ $ $ \barν$。计算出的衰减率和$λ_b$ baryon的分支比与其他理论预测以及可用的实验观察结果一致。
The semileptonic transition of $Λ_b$ baryon is studied using the Hypercentral constituent quark model. The six-dimensional hyperradial $Schr\ddot{o}dinger$ equation is solved in the variational approach to get masses and wavefunctions of heavy baryons. The matrix elements of weak decay are written in terms of the overlap integrals of the baryon wave function. The Isgur-Wise function is determined to calculate exclusive semileptonic decay $Λ_b$ $\rightarrow$ $Λ_c$ $\ell$ $\barν$. The calculated decay rate and the branching ratio of $Λ_b$ baryon are consistent with other theoretical predictions and with the available experimental observations.
