Bounds on Higgs and top quark masses from vacuum stability(degeneracy) with gravitational contributions  

作　　者：Zhuang Li Guo-Li Liu Fei Wang Lin Wang 

机构地区：[1]School of Physics, Zhengzhou University [2]State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics China, Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》2018年第9期37-44,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the Notional Natural Science Foundation of China(Grant Nos.11675147,11105124,and 11105125);the Open Project Program of State Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,China(Grant No.Y5KF121CJ1);the Innovation Talent Project of Henan Province(Grant No.15HASTIT017);and the Young-Talent Foundation of Zhengzhou University(Grant Nos.1421317054,and 1421317053);the Young Core Instructor Foundation of the Henan Education Department

摘　　要：Based on the two-loop RGE of standard model gauge, top-Yukawa as well as scalar quartic couplings with full one-loop gravitational contributions in harmonic gauge, we study the constraints on the Higgs and top quark mass from the requirement that the other degenerate vacua at the Planck-dominated region exists. Our numerical calculations show that nature will not develop the other degenerate vacua at the Planck-dominated region with current Higgs and top quark masses. On the other hand, requiring the existence of the other degenerate vacua at the Planck-dominated region will constrain the Higgs and top mass to lie at approximately 130 and 174 Ge V, respectively.Based on the two-loop RGE of standard model gauge, top-Yukawa as well as scalar quartic couplings with full one-loop gravitational contributions in harmonic gauge, we study the constraints on the Higgs and top quark mass from the requirement that the other degenerate vacua at the Planck-dominated region exists. Our numerical calculations show that nature will not develop the other degenerate vacua at the Planck-dominated region with current Higgs and top quark masses. On the other hand, requiring the existence of the other degenerate vacua at the Planck-dominated region will constrain the Higgs and top mass to lie at approximately 130 and 174 Ge V, respectively.

关 键 词：gravitational contributions top-Yukawa coupling MPCP RGE 

分 类 号：O572.21[理学—粒子物理与原子核物理]