A FRAMEWORK TO SIMULTANEOUSLY EXPLAIN TINY NEUTRINO MASS AND HUGE MISSING MASS PROBLEM OF THE UNIVERSE
A FRAMEWORK TO SIMULTANEOUSLY EXPLAIN TINY NEUTRINO MASS AND HUGE MISSING MASS PROBLEM OF THE UNIVERSE
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同时解释宇宙微小中微子质量和巨大缺失质量问题的框架
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Y. Farzan
中科院分区：
文献类型：
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作者：
Y. Farzan
一个极简的场景被开发出来来解释暗物质和微小但非零的中微子质量。一种叫做SLIM的新标量扮演着暗物质的角色。中微子通过单环图达到马约拉纳质量。这个场景可以在真实的和复杂的SLIM中实现。同时解释中微子的质量和暗物质的丰度限制了这种情况。特别是对于实际的SLIM，我们得到了新粒子质量的几个MeV的上界和它们耦合的下界，这使得这个场景可以测试。低能量场景可以嵌入到各种SU(2)× U(1)对称模型中。介绍了一个具体的例子，并讨论了其现象学结果。
A minimalistic scenario is developed to explain dark matter and tiny but nonzero neutrino masses. A new scalar called SLIM plays the role of the dark matter. Neutrinos achieve Majorana mass through a one-loop diagram. This scenario can be realized for both real and complex SLIM. Simultaneously explaining the neutrino mass and dark matter abundance constrains the scenario. In particular for real SLIM, an upper bound of a few MeV on the masses of the new particles and a lower bound on their coupling is obtained which make the scenario testable. The low energy scenario can be embedded within various SU(2)× U(1) symmetric models. A specific example is introduced and its phenomenological consequences are discussed.