论文标题
无菌中微子暗物质和左右希格斯奇偶校验
Sterile Neutrino Dark Matter and Leptogenesis in Left-Right Higgs Parity
论文作者
论文摘要
标准模型希格斯四分之一的耦合消失在$（10^{9} -10^{13}）$ GEV。我们研究$ su（2）_l \ times su（2）_r \ times u（1）_ {b-l} $结合了希格斯奇偶校验机制的理论，这成为左右对称性破坏的规模，$ v_r $。此外，这些理论解决了强大的CP问题，并预测了三个右撇子中微子。我们介绍宇宙学，其中$ su（2）_r \ times u（1）_ {b-l} $量规交互通过冻结或冷冻机制产生右手中微子。在这两种情况下，我们都会发现最轻的右中微子是暗物质的参数空间，而较重的腐烂会通过瘦素发生产生宇宙的重子不对称。构建了一种风味理论，该理论自然地说明了右手中微子暗物质的轻巧和稳定性，同时保持了足够的Baryon不对称性。暗物质丰度和成功的自然瘦生成需要$ v_r $在$（10^{10} -10^{13}）$ GEV的范围内进行冻结，这与Higgs Quartic Quartic Quartic耦合消失的规模达到了极大的一致性，而同时需要$ v_r \ gtrsim 10^9 $ gtrsim 10^9 $ gtrsim 10^9 $ gtrsim。允许的参数空间可以通过暗物质的温暖，最高夸克质量和QCD耦合的精确确定，并通过未来的围墙和晶格计算进行探测，以及中微子质量层次结构的测量。
The standard model Higgs quartic coupling vanishes at $(10^{9}-10^{13})$ GeV. We study $SU(2)_L \times SU(2)_R \times U(1)_{B-L}$ theories that incorporate the Higgs Parity mechanism, where this becomes the scale of Left-Right symmetry breaking, $v_R$. Furthermore, these theories solve the strong CP problem and predict three right-handed neutrinos. We introduce cosmologies where $SU(2)_R \times U(1)_{B-L}$ gauge interactions produce right-handed neutrinos via the freeze-out or freeze-in mechanisms. In both cases, we find the parameter space where the lightest right-handed neutrino is dark matter and the decay of a heavier one creates the baryon asymmetry of the universe via leptogenesis. A theory of flavor is constructed that naturally accounts for the lightness and stability of the right-handed neutrino dark matter, while maintaining sufficient baryon asymmetry. The dark matter abundance and successful natural leptogenesis require $v_R$ to be in the range $(10^{10}-10^{13})$ GeV for freeze-out, in remarkable agreement with the scale where the Higgs quartic coupling vanishes, whereas freeze-in requires $v_R \gtrsim 10^9$ GeV. The allowed parameter space can be probed by the warmness of dark matter, precise determinations of the top quark mass and QCD coupling by future colliders and lattice computations, and measurement of the neutrino mass hierarchy.
