Baryogenesis from a dark first-order phase transition
Journal Article
·
· Journal of High Energy Physics (Online)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Tokyo (Japan). Kavli Institute for the Physics and Mathematics of the Universe (WPI); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg (Germany)
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 ΔNeff = 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.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS); German Research Foundation (DFG)
- Grant/Contract Number:
- AC02-05CH11231; PHY-1638509; JP17K05409; JP15H05887; JP15K21733; 390833306
- OSTI ID:
- 1713228
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2020, Issue 4; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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