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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Validity of the effective potential and the precision of Higgs field self-couplings

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Autor(es):
Jain, Bithika [1, 2, 3] ; Lee, Seung J. [4, 3] ; Son, Minho [5]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista, Inst Fis Teor, Sao Paulo - Brazil
[2] Univ Estadual Paulista, ICTP South Amer Inst Fundamental Res, Sao Paulo - Brazil
[3] Korea Inst Adv Study, Sch Phys, Seoul 130722 - South Korea
[4] Korea Univ, Dept Phys, Seoul 136713 - South Korea
[5] Korea Adv Inst Sci & Technol, Dept Phys, 291 Daehak Ro, Daejeon 34141 - South Korea
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: Physical Review D; v. 98, n. 7 OCT 2 2018.
Citações Web of Science: 1
Resumo

The global picture of the Higgs potential in the bottom-up approach is still unknown. A large deviation as big as O(1) fluctuations of the Higgs self-couplings is still a viable option for the new physics. An interesting new physics scenario that can be linked to a large Higgs self-coupling is the baryogenesis based on the strong first order phase transition. We revisit the strong first order phase transition in two classes of beyond the Standard Models, namely the Higgs portal with the singlet scalar under the Standard Model gauge group with Z(2) symmetry and the effective field theory approach with higher-dimensional operators. We numerically investigate a few important issues in the validity of the effective potential, caused by the breakdown of the high-temperature approximation, and in the criteria for the strong first order phase transition. We illustrate that these issues can lead to O(1) uncertainties in the precision of the Higgs self-couplings, which are relevant when discussing sensitivity limits of different future colliders. We also find that the quartic coupling of the above two classes of scenarios compatible with the strong first order electroweak phase transition where the cubic coupling is not negligible can achieve a 2 sigma sensitivity at the 100 TeV pp collider. From this novel observation, we show that the correlation between the Higgs cubic coupling and the quartic coupling will be useful for differentiating various underlying new physics scenarios and discuss its prospect for the future colliders. Throughout our numerical investigation, the contribution from the Goldstone boson is not included. (AU)

Processo FAPESP: 16/01343-7 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para física teórica
Beneficiário:Nathan Jacob Berkovits
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 17/05770-0 - Explorando a quebra de simetria eletrofraca e a natureza da matéria escura
Beneficiário:Bithika Jain
Linha de fomento: Bolsas no Brasil - Pós-Doutorado