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Combined explanations of(g−2)μ,RD(*),RK(*)anomalies in a two-loop radiative neutrino mass model
Physical Review D ( IF 5 ) Pub Date : 
Shaikh Saad

Motivated by the long-standing tension in the muon anomalous magnetic moment (AMM) and persistent observations of B-physics anomalies in RD(*) and RK(*) ratios, we construct a simple two-loop radiative neutrino mass model, and propose a combined explanations of all these apparently disjoint phenomena within this framework. Our proposed model consists of two scalar leptoquarks (LQs), a SU(2)L singlet S1(3,1,1/3) and a SU(2)L triplet S3(3,3,1/3) to accommodate RD(*) and RK(*) anomalies, respectively. The muon receives chirality-enhanced contribution towards its g2 due to the presence of S1 LQ that accounts for the observed deviation from the Standard Model prediction. Furthermore, we introduce a SU(2)L singlet scalar diquark ω(6,1,2/3), which is necessary to break lepton number and generate neutrino mass radiatively with the aid of S1 and S3 LQs. We perform a detailed phenomenological analysis of this set-up and demonstrate its viability by providing benchmark points where a fit to the neutrino oscillation data together with proper explanations of the muon AMM puzzle and flavor anomalies are accomplished while simultaneously meeting all other flavor violation and collider bounds.

中文翻译:

二环辐射中微子质量模型中(g-2)μ,RD(*),RK(*)异常的组合解释

归因于μ子磁矩异常(AMM)的长期张力以及对B物理异常的持续观测 [Rd*[Rķ*比率,我们构建了一个简单的两环辐射中微子质量模型,并在此框架内提出了对所有这些明显不相交现象的组合解释。我们提出的模型包括两个标量幼体夸克(LQ),一个小号ü2大号 单线态 小号1个31个1个/3 和一个 小号ü2大号 三胞胎 小号3331个/3 以适应 [Rd*[Rķ*异常。该介子对其手性进行了增强的贡献G-2 由于存在 小号1个LQ解释了从标准模型预测中观察到的偏差。此外,我们介绍了小号ü2大号 单重态标量夸克 ω61个2/3,这是打破轻子数并借助辐射产生中微子质量的必要条件。 小号1个小号3LQ。我们对该设置进行了详细的现象学分析,并通过提供基准点来证明其可行性,该基准点适合中微子振荡数据,并能对μonAMM拼图和风味异常做出正确的解释,同时满足所有其他风味破坏和碰撞界限。
更新日期:2020-07-09
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