Simple extensions of the Standard Model (SM) with additional Right HandedNeutrinos (RHNs) can elegantly explain the existence of small neutrino massesand their flavor mixings. Collider searches for sterile neutrinos are beingactively pursued at the Large Hadron Collider (LHC) currently. Heavy RHNs maydominantly decay into $W^pm ell^mp$ after being produced at the LHC. In thispaper, we consider the challenging, opposite-sign di-lepton signature in thefinal state, in association with hadronic decay of the $W^pm$. For the latter,we will specifically consider a fat jet topology and explore enhancements fromjet substructure techniques. Though collimated and large radius topologies andjets have been considered earlier in this context, applications of jetsubstructure methods have hitherto been largely unexplored. Amongst the simpleSM extensions with sterile right-handed neutrinos, we consider seesaw andinverse seesaw models, to sharpen our discussions and limits. SM neutrinomasses in the former case are generated by a large lepton number violatingparameter whereas in the later a small lepton number violating parameter isresponsible for the same; requiring the RHNs to be Majorana and pseudo-Diractype respectively. Exploiting the fat jet and jet substructure techniques, wedemonstrate the effectiveness of this alternative channel and show that thebounds on the RHN mass and mixing angles at the 13 TeV LHC may be enhancedsignificantly.
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机译：标准型号（SM）的简单扩展与额外的右边rinos（rhns）可以典雅地解释小中性菌块的存在，它们的味道混合。目前大型Hadron Collifer（LHC）正追求无菌中微子的撞机搜索。在LHC制作后，繁重的rhns masodominally腐烂到$ w ^ ^ ^ mp。在此纸纸中，我们考虑到The Final State的具有挑战性，对面的Di-Lepton签名，与The $ w ^ pm $的重整衰减相关联。对于后者，我们将特别考虑脂肪喷射拓扑并探索从Jet子结构技术的增强功能。虽然在这种情况下之前已经考虑了准直和大的半径拓扑拓扑和曲线，但Jetsub结构方法的应用迄今为止已经大大未开发。在具有无菌右手中微子的SIMPLESM扩展中，我们认为跷跷板和跷跷板模型，锐化我们的讨论和限制。以前案件中的SM中微族瘤是由违规的，而在后面的小Lepton号码中违反参数等相同的小Lepton号;要求RHN分别是Majorana和Pseudo-doxtype。利用脂肪射流和喷射次结构技术，呈现该替代通道的有效性，并表明在13 TEV LHC上的RHN质量和混合角上的竞争可能会显着。
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