论文标题
LHC运行2
Updated constraints on the Georgi-Machacek model from LHC Run 2
论文作者
论文摘要
我们通过直接搜索新的希格斯玻色子的直接搜索来研究Georgi-Machacek模型上的实验限制，并测量了发现的125 GEV Higgs玻色子的性能。我们通过将公共代码higgsbounds 5.2.0和higgssignals 2.2.1连接到应用程序，该公共代码对额外的希格斯玻色子进行了大量直接搜索约束，并将125 GEV状态的属性测量到模型计算器GMCALC。我们还实施了涉及搜索双重电荷的希格斯玻色子的搜索和中性希格斯的drell-yan产生，并直接将光子对直接陷入gmcalc；这些通道不包含在Higgsbounds中，而是在模型上提供重要的约束，尤其是在低质量下。我们将模型上的新约束从$ H_3^0 \到z H $，$ h \到HH $，并指出这些频道仍然有希望。我们还确定了应用所有实验限制后的SM样Higgs玻色子的允许耦合范围，并表明直接搜索其他Higgs玻色子通常比125 GEV Higgs玻色子耦合的测量值更为约束。更新的GMCALC代码将以1.5.0版发布。
We study the experimental constraints on the Georgi-Machacek model from direct searches for the new Higgs bosons and measurements of the properties of the discovered 125 GeV Higgs boson. We apply these by interfacing the public codes HiggsBounds 5.2.0 and HiggsSignals 2.2.1, which implement a large collection of direct-search constraints on extra Higgs bosons and measurements of the properties of the 125 GeV state to the model calculator GMCALC. We also implement constraints involving searches for doubly-charged Higgs bosons and Drell-Yan production of a neutral Higgs with decays to photon pairs directly into GMCALC; these channels are not included in HiggsBounds but provide important constraints on the model, especially at low mass. We identify new constraints on the model from $H_3^0 \to Z h$ and $H \to hh$ and point out that these channels remain promising. We also determine the allowed range of couplings of the SM-like Higgs boson after all experimental constraints are applied and show that the direct searches for additional Higgs bosons are generally more constraining than the measurements of the 125 GeV Higgs boson couplings. The updated GMCALC code will be released as version 1.5.0.
