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Fa Peng Huang
순수물리이론 연구단
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Enhanced Z boson decays as a new probe of first-order electroweak phase transition at future lepton colliders

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Title
Enhanced Z boson decays as a new probe of first-order electroweak phase transition at future lepton colliders
Author(s)
Fa Peng Huang; Eibun Senaha
Publication Date
2019-08
Journal
PHYSICAL REVIEW D, v.100, no.3, pp.035014 -
Publisher
AMER PHYSICAL SOC
Abstract
© 2019 authors. Published by the American Physical Society. We study phenomenological consequences of the strong first-order electroweak phase transition in an extension of the standard model with an inert doublet and vectorlike leptons motivated by the muon g - 2 anomaly and dark matter. We find that a condition for the strong first-order electroweak phase transition inevitably induces a large logarithmic enhancement in Z boson decays, which relegates the explanation of the anomalous muon g - 2 at below 2 sigma level. Our analysis shows that future lepton collider experiments, especially the Giga-Z at the International Linear Collider and Tera-Z at the Circular Electron Positron Collider as well as Future Circular Collider have great capability to explore the nature of the electroweak phase transition, which is complementary to conventional approaches via measurements of the triple Higgs boson coupling and gravitational waves
URI
https://pr.ibs.re.kr/handle/8788114/6448
ISSN
2470-0010
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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