中微子暗物质：对称性保护和Cosmic Ray反常

三线性R宇称破坏的中微子真空期望值和中微子反常

Sneutrino Vacuum Expectation Values and Neutrino Anomalies Through Trilinear R-parity Violation

在具有显式三线性$R$破坏的超对称模型中重新分析了中微子质量谱。在这一类的模型被认为是提供同时解决太阳和大气中微子异常。它特别表明，大的混合和层次的中微子异常的真空解决方案所需的质量自然出现在这些模型中，而不需要任何额外的对称性或层次之间的三线性耦合。

Explaining the $R_{K}$ and $R_{K^*}$ Anomalies With Right-handed Sneutrino

The recent intriguing measurements of $R_{K}$ and $R_{K^*}$ are important hints of new physics that violates lepton universality. We analyze the semileptonic decays $b \to s \ell^+ \ell^-$ in the framework of the $B-L$ extension of Minimal Supersymmetric Standard Model (MSSM) with Inverse Seesaw (BLSSMIS). A salient feature of this model is that one of the right-handed sneutrino can be light and the neutrino Yukawa couplings are of order one. We show that the box diagram mediated by right-handed sneutrino, higgsino-like chargino, and light stop can account simultaneously for both $R_{K}$ and $…

中微子暗物质与观测到的宇宙射线异常

Sneutrino Dark Matter and the Observed Anomalies in Cosmic Rays

根据PAMELA和ATIC实验的最新结果，我们重新审视了超中微子暗物质。在最小超对称标准模型的U（1）_B-L推广中，右手中微子是热暗物质的自然候选者。由于打破U（1）_B-L的希格斯扇区中最轻场的交换，目前的中微子湮灭可以大大增强。湮灭主要是通过B-L电荷产生τ介子（或μ子）。一个sneutrino质量在1-2 TeV的范围内提供了一个很好的适合PAMELA的数据和合理的适合ATIC的数据。在这个质量范围内，中微子-核子弹性散射截面为10^（-11）-10 ^（-9）pb，这可能被即将到来的和未来的直接探测实验所探测。此外，如果（至少）其中一个中微子主要是狄拉克费米子，则超中微子可以提供暗物质和暴胀的统一图像。

Revisiting the $B$-physics anomalies in $R$-parity violating MSSM

In recent years, several deviations from the Standard Model predictions in semileptonic decays of $B$-meson might suggest the existence of new physics which would break the lepton-flavour universality. In this work, we have explored the possibility of using muon sneutrinos and right-handed sbottoms to solve these $B$-physics anomalies simultaneously in $R$-parity violating minimal supersymmetric standard model. We find that the photonic penguin induced by exchanging sneutrino can provide sizable lepton flavour universal contribution due to the existence of logarithmic enhancement for the first…

$R_{K^{(\ast)}}$ from RPV-SUSY sneutrinos

We analyze the lepton flavor universality violation (LFV) in process $b\to s \ell^+\ell^-$ in an R-parity violating supersymmetric (RPV-SUSY) scenario. The most recent update on $\rk$ from the LHCb collaboration suggests approximately $3.1σ$ deviation from the Standard Model predictions, strengthening the case of LFV New Physics. In this work, we show that $R_{K^{(*)}}$ anomaly can be addressed via only sneutrinos within the framework of R-parity violating interactions assuming phenomenologically viable values of the couplings. While our proposed solution is by no means the only solution to th…

LHC的味异常和类矢量粒子扩展的R宇称破坏超对称模型

Flavor anomalies at the LHC and the R-parity violating supersymmetric model extended with vectorlike particles

在本文中，我们考虑一个解决方案来解释的三个差异与标准模型（SM）预测的味道观测，即异常的$B\rightarrow K^\astμ^+μ^-$和$R_K=\mathcal{B}(B\rightarrow Kμ^+μ^-)/\mathcal{B}(B\rightarrow K e^+e^-)$在LHCb和过剩的$h\rightarrow μτ$在CMS的R-宇称破坏（RPV）超对称性的背景下。我们证明，这些异常可以在一个统一的框架内解释：最小超对称模型（MSSM）扩展与$5+\overline{5}$矢量（VL）粒子。在我们的模型中，新的包含VL粒子的三线性RPV耦合可以解决$b\rightarrow s$反常，类SM的希格斯玻色子和VL中微子的混合可以产生额外的$h \rightarrow μτ$衰变模.