论文标题
$ u（1）_ {b-l} $型号的FCC-HH的重中微子
Heavy Neutrinos at the FCC-hh in the $U(1)_{B-L}$ Model
论文作者
论文摘要
我们研究了100 TEV未来的圆形对撞机（FCC-HH）对探测沉重中微子的潜力。我们特别专注于通过$ u（1）_ {b-l} $ $ z'$ gauge boson的重型中微子生产，并将结果限制与由标准模型弱电流介导的限制。我们认为沉重的中微子腐烂会衰减半乳清官以及完全松弛的最终状态，尤其是带有muon风味，我们表明了在迅速和流离失所的重中微子中考虑搜索的重要性。对于迅速的最终状态，由于背景较小和产量较小，半副本模式更具希望，而TeV尺度的重中微子具有与光中微子质量在Seesaw方案中与光中微子质量兼容的混合，可以探索5 TEV $ Z'$，并低至$ G_ $ G_ {B-l-g_ {b-l-l-l-l-l} = 10^10^= 10^= 10^-2}。流离失所的顶点搜索可以将此范围扩展到低至10 GEV的重中微子肿块。
We investigate the potential of the 100 TeV future circular collider (FCC-hh) to probe heavy neutrinos. We concentrate in particular on heavy neutrino production via a $U(1)_{B-L}$ $Z'$ gauge boson and contrast the resulting limits with that mediated by Standard Model weak currents. We consider heavy neutrino decays to semi-leptonic as well as fully leptonic final states, particularly with muon flavour, and we show the importance of considering searches both in prompt and displaced decays of the heavy neutrinos. For prompt final states, semi-leptonic modes are more promising due to smaller background and larger yields, and TeV-scale heavy neutrinos with active-sterile mixing compatible with light neutrino mass generation in a seesaw scenario can be probed for a 5 TeV $Z'$ and gauge coupling as low as $g_{B-L} = 10^{-2}$. Displaced vertex searches can extend this range to heavy neutrino masses as low as 10 GeV.
