教師資料查詢 | 類別: 期刊論文 | 教師: 陳旭 CHEN, CHIEN-HSU (瀏覽個人網頁)

標題: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
語言英文
ISSN1126-6708
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別義大利
公開徵稿
出版型式,電子版,紙本
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