Non-resonant collider signatures of a singlet-driven electroweak phase transition

dc.contributor.authorChen, Chien-Yi
dc.contributor.authorKozaczuk, Jonathan
dc.contributor.authorLewis, Ian M.
dc.descriptionWe thank David Curtin, Peisi Huang, Zhen Liu, Andrew Long, Stephen Martin, Jose Miguel No, Hiren Patel, Michael Ramsey-Musolf, and Graham Wilson for many illuminating discussions, suggestions and comments throughout the course of this work.en_US
dc.description.abstractWe analyze the collider signatures of the real singlet extension of the Standard Model in regions consistent with a strong first-order electroweak phase transition and a singlet-like scalar heavier than the Standard Model-like Higgs. A definitive correlation exists between the strength of the phase transition and the trilinear coupling of the Higgs to two singlet-like scalars, and hence between the phase transition and non-resonant scalar pair production involving the singlet at colliders. We study the prospects for observing these processes at the LHC and a future 100 TeV pp collider, focusing particularly on double singlet production. We also discuss correlations between the strength of the electroweak phase transition and other observables at hadron and future lepton colliders. Searches for non-resonant singlet-like scalar pair production at 100 TeV would provide a sensitive probe of the electroweak phase transition in this model, complementing resonant di-Higgs searches and precision measurements. Our study illustrates a strategy for systematically exploring the phenomenologically viable parameter space of this model, which we hope will be useful for future work.en_US
dc.description.sponsorshipThe work of C.-Y. C is supported by NSERC, Canada. Research at the Perimeter Institute is supported in part by the Government of Canada through NSERC and by the Province of Ontario through MEDT. While at TRIUMF, the work of JK was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). TRIUMF receives federal funding via a contribution agreement with the National Research Council of Canada. IML was supported in part by the U.S. Department of Energy under contract DE-AC02-76SF0051 and the University of Kansas General Research Fund allocation 2302091.en_US
dc.identifier.citationChen, C.; Kozaczuk, J.; & Lewis, I.M. (2017). Non-resonant collider signatures of a singlet-driven electroweak phase transition. Journal of High Energy Physics, 2017(8), article 96. DOI: 10.1007/JHEP08(2017)096en_US
dc.publisherJournal of High Energy Physicsen_US
dc.subjectBeyond Standard Modelen_US
dc.subjectCosmology of Theories beyond the SMen_US
dc.subjectHiggs Physicsen_US
dc.subjectThermal Field Theoryen_US
dc.titleNon-resonant collider signatures of a singlet-driven electroweak phase transitionen_US


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