论文标题
质谱和半衰减的衰减，重量$ξ$和$ω$ baryons
Mass Spectra and Semileptonic Decays of Doubly Heavy $ Ξ$ and $ Ω$ Baryons
论文作者
论文摘要
在非相关主义夸克模型的框架内，计算了双重重$ξ$和$ω$ baryons的地面和激发态的质谱。 我们估计$ω$和相应的$ξ$ baryons之间的质量差异为$M_Ω-M_ξ\ simeq178 $ MEV，用于所有包含$ cc，〜bc $或$ bb $ quarks的状态。 引入了通用iSgur函数的一种简单形式，作为双重重气子之间的过渡形式。我们在接近零后的限制下工作，我们研究了$ b \ rightarrow c $半衰减的衰变宽度和偶发性重的重子的分支分数。将获得的结果与其他理论预测进行了比较。
In the framework of a non-relativistic quark model, the mass spectra of the ground and excited states of doubly heavy $Ξ$ and $Ω$ baryons are calculated. We estimate the mass difference between the $ Ω$ and corresponding $ Ξ$ baryons as $M_Ω-M_Ξ\simeq178 $ MeV for all the states containing $ cc,~bc $, or $ bb $ quarks. A simple form of the universal Isgur-Wise function, as the transition form factor between the doubly heavy baryons, is introduced. Working in the close-to-zero recoil limit, we investigate the $ b \rightarrow c $ semileptonic decay widths and branching fractions of the doubly heavy baryons. The obtained results are compared with other theoretical predictions.
