Revisiting electroweak phase transition in the standard model with a real singlet scalar

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Title
Revisiting electroweak phase transition in the standard model with a real singlet scalar
Author(s)
Cheng-WeiChiang; Yen-Ting; Eibun Senaha
Publication Date
2019-02
Journal
PHYSICS LETTERS B, v.789, no., pp.154 - 159
Publisher
ELSEVIER SCIENCE BV
Abstract
We revisit the electroweak phase transition in the standard model with a real scalar, utilizing several calculation methods to investigate scheme dependences. We quantify the numerical impacts of Nambu–Goldstone resummation, required in one of the schemes, on the strength of the first-order electroweak phase transition. We also employ a gauge-independent scheme to make a comparison with the standard gauge-dependent results. It is found that the effect of the Nambu–Goldstone resummation is typically ∼1%. Our analysis shows that both gauge-dependent and -independent methods give qualitatively the same result within theoretical uncertainties. In either methods, the scale uncertainties in the ratio of critical temperature and the corresponding Higgs vacuum expectation value are more than 10%, which signifies the importance of higher-order corrections. © 2018 The Author(s).
URI
https://pr.ibs.re.kr/handle/8788114/5724
ISSN
0370-2693
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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