Sphaleron in the first-order electroweak phase transition with the dimension-six Higgs operator

Vo Quoc Phong, Phan Hong Khiem, Ngo Phuc Duc Loc +1

By adding the dimension-six operator for the Higgs potential (denoted ${\mathcal{O}}_6$) in Standard Model, we have a first-order electroweak phase transition (EWPT) whose strength i…