论文标题
对风味混合参数的真空稳定性限制及其对Gluino衰变的影响
Vacuum Stability Constraints on Flavor Mixing Parameters and Their Effect on Gluino Decays
论文作者
论文摘要
在本文中，我们研究了两个身体延迟$ \ tilde {g} \ rightarrow \ tilde {u} _i \ bar {在最小的超对称标准模型（MSSM）中，有夸克风味违规（QFV）。首先，对QFV参数的约束$δ_{ij}^{u/d（lr）} $和$δ_{ij}^{ij}^{u/d（rl）} $，使用$ i，j = 1,2,3 $和$（I \ neq j）$（I \ neq j）$（I \ neq J）的特定设置（使用MSSMSMSMSSMSS），并弄成（I \ neq j）$（低于最小值（UFB）条件。与来自文献中已经可用的B物理学可观察物（BPO）的约束相比，这些约束更为严格。在第二步中，我们重新计算$ \ tilde {g} \ rightarrow \ tilde {u} _i \ bar {在Squarks质量矩阵的RR领域，部分衰减宽度可以达到120 GEV，而在LL领域，可能是$ \ 90 $ GEV。由于严格的CCB和UFB约束，通常会忽略LR/RL扇区中的QFV，但是，我们的分析表明，对于某些参数点，这种混合可以贡献到$ \ 12 $ GEV，不应忽略。我们希望这些结果将证明对当前和未来的山脉的Gluinos进行实验搜索有所帮助。
In this article, we study the two body gluino decays $\tilde{g} \rightarrow \tilde{u}_i \bar{u}_g$, $\tilde{g} \rightarrow \tilde{d}_i \bar{d}_g$ with $i=1,2,...6$ and $g=1,2,3$ in the Minimal Supersymmetric Standard Model (MSSM) with quark flavour violation (QFV). At the outset, constraints on QFV parameters $δ_{ij}^{U/D(LR)}$ and $δ_{ij}^{U/D(RL)}$ with $i,j=1,2,3$ and $(i\neq j) $ are calculated for a specific set of MSSM parameters using charge and color breaking minima (CCB) and unbounded from below minima (UFB) conditions. These constraints are more stringent compared to the constraints coming from B-physics observables (BPO), that are already available in literature. In the second step, we re-calculate the partial decay widths of $\tilde{g} \rightarrow \tilde{u}_i \bar{u}_g$, $\tilde{g} \rightarrow \tilde{d}_i \bar{d}_g$ for the allowed range of QFV parameters. The partial decay widths can reach upto 120 GeV in the RR sector of the squarks mass matrices while in the LL sector it can be $\approx 90$ GeV. The QFV in the LR/RL sector is usually ignored due to stringent CCB andd UFB constraints, however, our analysis reveals that this mixing can contribute upto $\approx 12 $ GeV for some parameter points and should not be ignored. We hope that these results will prove helpful for the experimental searches of gluinos at the current and future colliders.
