论文标题
用$l_μ-l_τ$解释Lepton-Flavor非大学性和自我互动暗物质
Explaining lepton-flavor non-universality and self-interacting dark matter with $L_μ-L_τ$
论文作者
论文摘要
在MUON的磁矩以及中性和充电的$ b $ $ b $ -seson衰减中，对Lepton-Flovor的普遍性的实验提示需要粒子等标准模型的扩展，例如leptoquarks，例如leptoquarks，通常会导致无与伦比的充电Lepton风味味和Proton腐烂的速率，这些颗粒通常会导致无效的快速速率。我们提出了一个基于计数的$ u（1）_ {l_μ-l_τ} $的模型，该模型消除了所有这些不需要的衰减，而不是对称性，而不是填充且有效地解释$（g-2）_ $，$ r_ $，$ r_ {k^{（（））{（*）}}} $，$ r_ {d^{d^{{{{{{）} $ u（1）_ {l_μ-l_τ} $还可以作为暗物质的稳定对称性，而光$ z'$ gauge boson介导了速度依赖于速度依赖的黑暗 - 摩擦自我相互作用，从而解决了小规模的结构问题。最后，即使是哈勃张力也可以通过对相对论自由度的轻$ z'$贡献来改善。
Experimental hints for lepton-flavor universality violation in the muon's magnetic moment as well as neutral- and charged-current $B$-meson decays require Standard-Model extensions by particles such as leptoquarks that generically lead to unacceptably fast rates of charged lepton flavor violation and proton decay. We propose a model based on a gauged $U(1)_{L_μ-L_τ}$ that eliminates all these unwanted decays by symmetry rather than finetuning and efficiently explains $(g-2)_μ$, $R_{K^{(*)}}$, $R_{D^{(*)}}$, and neutrino masses. The $U(1)_{L_μ-L_τ}$ furthermore acts as a stabilizing symmetry for dark matter and the light $Z'$ gauge boson mediates velocity-dependent dark-matter self-interactions that resolve the small-scale structure problems. Lastly, even the Hubble tension can be ameliorated via the light $Z'$ contribution to the relativistic degrees of freedom.
