Implementation of the type III seesaw model in FeynRules/MadGraph and prospects for discovery with early LHC data

Implementation of the left-right symmetric model in FeynRules

We present an implementation of the manifest left-right symmetric model in FeynRules. The different aspects of the model are briefly described alongside the corresponding elements of the model file. The model file is validated and can be easily translated to matrix element generators such as MadGraph5_aMC@NLO, CalcHEP, Sherpa, etc. The implementation of the left-right symmetric model is a useful step for studying new physics signals with the data generated at the LHC.

Phenomenology of the Higgs Effective Lagrangian via FeynRules

The Higgs discovery and the lack of any other hint for new physics favor a description of non-standard Higgs physics in terms of an effective field theory. We present an implementation of a general Higgs effective Lagrangian containing operators up to dimension six in the framework of FeynRules and provide details on the translation between the mass and interaction bases, in particular for three- and four-point interaction vertices involving Higgs and gauge bosons. We illustrate the strengths of this implementation by using the UFO interface of FeynRules capable to generate model files that ca…

Toponium：在FeynRules中实现toponium模型

Toponium: Implementation of a toponium model in FeynRules

针对QCD中最小最简单的强子系统toponium（$t\bar{t}$束缚态），提出扩展SM的计算框架，实现含两种S波态的toponium模型于FeynRules，生成模拟工具所需模型，建立完整研究流程并提供首个公开UFO模型。

超越 HL-LHC 上的轻子数破坏：分辨重中微子–反中微子振荡

Beyond lepton number violation at the HL-LHC: Resolving heavy neutrino-antineutrino oscillations

本文利用完整 Monte Carlo 模拟、Delphes 探测器模拟与统计分析，评估 CMS 在 HL-LHC 上分辨赝 Dirac 重中微子–反中微子振荡的条件，发现质量分裂小于约100 μeV时发现前景良好。

在LHC上检验CDF的“胖W”问题的标量三重态解决方案

Testing the Scalar Triplet Solution to CDF's Fat $W$ Problem at the LHC

本文针对可解释CDF W玻色子质量异常的II型跷跷板参数空间，结合MadGraph5_aMC@NLO与Contur利用LHC公开测量进行检验，发现其大部分已被排除，并提出Run III探索建议。

Doubly Charged Higgs Boson Production at Hadron Colliders II: A Zee-Babu Case Study

Motivated by searches for so-called leptonic scalars at the LHC and the recent measurement of the $W$ boson's mass at the Tevatron, we revisit the phenomenology of the Zee-Babu model for neutrino masses and the ability to differentiate it from the Type II Seesaw model at the LHC. We conclude that this task is much more difficult than previously believed. All inputs equal in the two scenarios, we find that total and differential rates for producing pairs of doubly and singly charged scalars are identical in shape and only differ in normalization. The normalization is given by the ratio of hadro…