论文标题
罕见的$ b \ d $衰减在协变量的夸克模型中
Rare $b \to d$ decays in covariant confined quark model
论文作者
论文摘要
在本文中，我们研究了稀有的衰减，与$ b \ to d $过渡的框架中的框架相互作用。通道的过渡形式$ b^{+（0）} \ to（π^{+（0）}，ρ^{+（0）}，ω）$和$ b_s^0 \ to k^{（*）0} $在整个动态传输范围内计算。使用形式因素，我们计算稀有衰减的分支部分，我们的结果被发现与实验数据非常匹配。我们还使用此模型计算了$ b \ \ s $与$ b \至$ b \ to $ b \ to $ b \ to $ b \ to $ b \ the $ b \ to s \ ell^+ell^ - $使用此模型的输入的比率。此外，使用形式因素，依赖模型和独立参数，我们还计算了整个$ q^2 $范围中的前向后不对称，纵向极化和棱角可观察的物理可观察力，以及$ q^2 $ bin [0.1-0.98] gev $^$^2 $^2 $和[1.1-6] GEV $^$^2 $。我们还将我们的发现与不同的理论预测进行了比较。
In this article, we study the rare decays corresponding to $b \to d$ transition in the framework of the covariant confined quark model. The transition form factors for the channels $B^{+(0)} \to (π^{+(0)}, ρ^{+(0)},ω)$ and $B_s^0 \to K^{(*)0}$ are computed in the entire dynamical range of momentum transfer squared. Using the form factors, we compute the branching fractions of the rare decays and our results are found to be matching well with the experimental data. We also compute the ratios of the branching fractions of the $b \to s$ to $b \to d$ rare decays using the inputs from previous papers on $b \to s \ell^+\ell^-$ using this model. Further, using the form factors, model dependent and independent parameters, we also compute different other physical observables such as forward backward asymmetry, longitudinal polarization and angular observables in the entire $q^2$ range as well as in $q^2$ bins [0.1 -- 0.98] GeV$^2$ and [1.1 -- 6] GeV$^2$. We also compare our findings with different theoretical predictions.
