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Type III neutrino seesaw, freeze-in long-lived dark matter, and the W mass shift
Physics Letters B ( IF 4.3 ) Pub Date : 2022-07-20 , DOI: 10.1016/j.physletb.2022.137327 Ernest Ma
中文翻译:
III 型中微子跷跷板、冻结长寿命暗物质和 W 质量转移
更新日期:2022-07-20
Physics Letters B ( IF 4.3 ) Pub Date : 2022-07-20 , DOI: 10.1016/j.physletb.2022.137327 Ernest Ma
In the framework of seesaw neutrino masses from heavy fermion triplets , the addition of a light fermion singlet N and a heavy scalar triplet has some important consequences. The new particles are assumed to be odd under a new symmetry which is only broken softly, both explicitly and spontaneously. With mixing, freeze-in long-lived dark matter through Higgs decay becomes possible. At the same time, the W mass is shifted slightly upward, as suggested by a recent precision measurement.
中文翻译:
III 型中微子跷跷板、冻结长寿命暗物质和 W 质量转移
在来自重费米子三重态的跷跷板中微子质量框架中, 添加一个轻费米子单重态N和一个重标量三重态有一些重要的后果。假设新粒子在新粒子下是奇数对称性只是轻轻地被打破,无论是明确的还是自发的。和通过希格斯衰变混合、冻结长寿命的暗物质成为可能。同时,正如最近的精密测量所表明的那样, W质量略微向上移动。