Baryogenesis from a dark first-order phase transition

被引：57
作者：
Hall, Eleanor [1 ,2 ]
Konstandin, Thomas [3 ]
McGehee, Robert [1 ,2 ]
Murayama, Hitoshi [1 ,2 ,3 ,4 ]
Servant, Geraldine [3 ,5 ]
机构：
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[2] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[3] DESY, Notkestr 85, D-22607 Hamburg, Germany
[4] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan
[5] Univ Hamburg, Inst Theoret Phys, D-22761 Hamburg, Germany
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2020年 / 2020卷 / 04期
关键词：
Beyond Standard Model; Cosmology of Theories beyond the SM; ELECTROWEAK; MODEL; NUMBER; BARYON;
D O I：
10.1007/JHEP04(2020)042
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We present a very minimal model for baryogenesis by a dark first-order phase transition. It employs a new dark SU(2)(D) gauge group with two doublet Higgs bosons, two lepton doublets, and two singlets. The singlets act as a neutrino portal that transfer the generated asymmetry to the Standard Model. The model predicts increment N-eff = 0.09-0.13 detectable by future experiments as well as possible signals from exotic decays of the Higgs and Z bosons and stochastic gravitational waves.
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页数：15
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