.png){kind=icon}
返回
Hunting for vectorlike quarks
.png){kind=icon}
OA
AI
DOI：10.1007/JHEP04(2019)019.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
We analyze decays of vectorlike quarks in extensions of the standard model and a two Higgs doublet model. We identify several typical patterns of branching ratios of the lightest new up-type quark, t(4), and down-type quark, b(4), depending on the structure of Yukawa couplings that mix the vectorlike and standard model quarks (we assume only mixing with the third generation) and also on their doublet or singlet nature. We find that decays into heavy neutral or charged Higgs bosons, when kinematically open, can easily dominate and even be close to 100%: b(4) Hb at medium to large tan , t(4) Ht at small tan and b(4) H(+/-)t, t(4) H(+/-)b at both large and small tan . The pair production of vectorlike quarks leads to 6t, 4t2b, 2t4b and 6b final states. The decay modes into W, Z and h follow the pattern expected from the Goldstone boson equivalence limit that we generalize to scenarios with all possible couplings. We also discuss in detail the structure of Yukawa couplings required to significantly deviate from the pattern characteristic of the Goldstone boson equivalence limit that can result in essentially arbitrary branching ratios.
Keyword:
Beyond Standard Model
Heavy Quark Physics
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
5.5
论文数:
3.9W
被引数:
13.7W
机构
引用论文
.png){kind=icon}
Two Higgs doublet model with vectorlike leptons and contributions to pp → WW and H → WW具有矢量状轻子的两个希格斯双峰模型及其对pp → WW和H → WW的贡献
OAAI
OAAI分享收藏New constraints and discovery potential for Higgs to Higgs cascade decays through vectorlike leptons希格斯到希格斯级联通过矢量状轻子衰减的新约束和发现潜力OAAI
OAAI分享收藏
查看更多内容