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Title: Gravitational wave and collider implications of electroweak baryogenesis aided by non-standard cosmology

Here, we consider various models realizing baryogenesis during the electroweak phase transition (EWBG). Our focus is their possible detection in future collider experiments and possible observation of gravitational waves emitted during the phase transition. We also discuss the possibility of a non-standard cosmological history which can facilitate EWBG. We show how acceptable parameter space can be extended due to such a modification and conclude that next generation precision experiments such as the ILC will be able to confirm or falsify many models realizing EWBG. We also show that, in general, collider searches are a more powerful probe than gravitational wave searches. However, observation of a deviation from the SM without any hints of gravitational waves can point to models with modified cosmological history that generically enable EWBG with weaker phase transition and thus, smaller GW signals.
 [1] ;  [2] ;  [3]
  1. Jagiellonian Univ., Krakow (Poland)
  2. Univ. of Warsaw (Poland). Faculty of Physics; Univ. of Michigan, Ann Arbor, MI (United States). Michigan Center for Theoretical Physics
  3. Univ. of Michigan, Ann Arbor, MI (United States). Michigan Center for Theoretical Physics; Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Publication Date:
Grant/Contract Number:
SC0007859; 0290/IP3/2016/74; 2014/13/N/ST2/02712; 2015/16/T/ST2/00527; IP2015 043174
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 3; Journal ID: ISSN 1029-8479
Springer Berlin
Research Org:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org:
USDOE Office of Science (SC); Ministry of Science and Higher Education (Poland); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Polish National Science Centre (NCN); Alexander von Humboldt Foundation (Germany)
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Cosmology of Theories beyond the SM; Higgs Physics; Solitons Monopoles and Instantons
OSTI Identifier: