The explanation of the small neutrino mass can be depicted using some handsome models like type-I and inverse seesaw where the Standard Model gauge singlet heavy right-handed neutrinos are deployed. The common thing in these two models is a lepton number violating parameter, however, its order of magnitude creates a striking difference between them making the nature of the right-handed heavy neutrinos a major play factor. In the type-I seesaw a large lepton number violating parameter involves the heavy right-handed neutrinos in the form of Majorana fermions while a small lepton number violating parameter being involved in the inverse seesaw demands the pseudo-Dirac nature of the heavy right-handed neutrinos. Such heavy neutrinos are accommodated in these models through the sizable mixings with the Standard Model light neutrinos. In this paper we consider the purely inverse seesaw scenario to study the pair production of the pseudo-Dirac heavy neutrinos followed by their various multilepton decay modes through the leading branching fraction at the leading order and next-to-leading order QCD at the LHC with a center-of-mass energy of 13 TeV and a luminosity of 3000 fb[Formula: see text]. We also consider a prospective 100 TeV hadron collider with luminosities of 3000 fb[Formula: see text] and 30,000 fb[Formula: see text], respectively to study the process. Using anomalous multilepton search performed by the CMS at the 8 TeV with 19.5 fb[Formula: see text] luminosity we show prospective search reaches of the mixing angles for the three lepton and four lepton events at the 13 TeV LHC and 100 TeV hadron collider.

中文翻译：

---

在逆跷跷板框架中的强子对撞机上以次优级 QCD 对重中微子的产生

可以使用一些漂亮的模型来描述小中微子质量的解释，例如 I 型和反向跷跷板，其中部署了标准模型单线重右手中微子。这两个模型的共同点是轻子数违反参数，然而，它的数量级在它们之间产生了显着差异，使得右手重中微子的性质成为主要的影响因素。在 I 型跷跷板中，一个大的轻子数违反参数涉及马约拉纳费米子形式的重右手中微子，而在逆跷跷板中涉及的小轻子数违反参数需要重右手的伪狄拉克性质中微子。通过与标准模型轻中微子的大量混合，这些重中微子被容纳在这些模型中。在本文中，我们考虑纯粹的反向跷跷板场景来研究伪狄拉克重中微子的对产生，然后是它们的各种多轻子衰变模式，通过 LHC 的前导分支分数和次导 QCD 与质心能量为 13 TeV，光度为 3000 fb[公式：见正文]。我们还考虑了一个预期的 100 TeV 强子对撞机，光度分别为 3000 fb[公式：见文本]和 30,000 fb[公式：见文本]，以研究该过程。使用 CMS 在 8 TeV 和 19.5 fb [公式：见文本] 光度下执行的异常多轻子搜索，我们展示了 13 TeV LHC 和 100 TeV 强子对撞机中三个轻子和四个轻子事件的混合角的预期搜索范围。