Vacuum stability, neutrinos, and dark matter
學年 100
學期 2
出版（發表）日期 2012-04-17
作品名稱 Vacuum stability, neutrinos, and dark matter
作品名稱（其他語言）
著者 Chen, Chian-Shu; Tang, Yong
單位
出版者
著錄名稱、卷期、頁數 Journal of High Energy Physics 1204:019
摘要 Motivated by the discovery hint of the Standard Model (SM) Higgs mass around 125 GeV at the LHC, we study the vacuum stability and perturbativity bounds on Higgs scalar of the SM extensions including neutrinos and dark matter (DM). Guided by the SM gauge symmetry and the minimal changes in the SM Higgs potential we consider two extensions of neutrino sector (Type-I and Type-III seesaw mechanisms) and DM sector (a real scalar singlet (darkon) and minimal dark matter (MDM)) respectively. The darkon contributes positively to the β function of the Higgs quartic coupling λ and can stabilize the SM vacuum up to high scale. Similar to the top quark in the SM we find the cause of instability is sensitive to the size of new Yukawa couplings between heavy neutrinos and Higgs boson, namely, the scale of seesaw mechanism. MDM and Type-III seesaw fermion triplet, two nontrivial representations of SU(2)L group, will bring the additional positive contributions to the gauge coupling g2 renormalization group (RG) evolution and would also help to stabilize the electroweak vacuum up to high scale.
關鍵字 Higgs Physics;Beyond Standard Model;Renormalization Group;Neutrino Physics
語言 en
ISSN 1126-6708
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 ITA
公開徵稿
出版型式 ,電子版,紙本
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