论文标题
Majoraana Neutrinos在同一符号$ W^\ pm w^\ pm $ spticting在LHC上的散射：打破TEV屏障
Majorana Neutrinos in Same-Sign $W^\pm W^\pm$ Scattering at the LHC: Breaking the TeV Barrier
论文作者
论文摘要
我们重新审视对$ \ sqrt {s} = 13 $ tev lhc及其高光度升级的$ w^\ pm $ satering in same sign $ w^\ pm w^\ pm的敏感性。作为基准场景，我们在我看到的现象学类型的背景下工作，依靠模拟与QCD中的近代领先顺序，并与Parton淋浴匹配。在广泛研究了$ pp \toμ^\pmμ^\ pm j j $工艺的现象学之后，我们设计了一个简单的撞机分析，具有显着的信号 - 背景分离能力。在95 \％的置信度下，我们发现平方含量的中微子混合元件$ \ vert v_ {μn} \ vert^{2} $可以探测到约$ 0.06-0.3〜（0.03-0.1）$ $ _n = 1-10〜 $ $ tev} $ {0.03-0.1）$ fb $^{ - 1}〜（3 $ ab $^{ - 1}）$。对于$ m_n = 20〜 {\ rm tev} $的较重的质量，我们报告了$ \ vert v_ {μn} \ vert^{2} \ gtrsim 0.5〜（0.3）$的灵敏度。 $ w^\ pm w^\ pm $散射通道可以大大扩展当前LHC搜索重型Majorana中微子所覆盖的质量范围，尤其是在几百GEV以上添加了宝贵的灵敏度。我们对可以改进分析以及对其他中微子质量模型测试的适用性进行评论。
We revisit the sensitivity to non-resonant, heavy Majorana neutrinos $N$ in same-sign $W^\pm W^\pm$ scattering at the $\sqrt{s}=13$ TeV LHC and its high-luminosity upgrade. As a benchmark scenario, we work in the context of the Phenomenological Type I Seesaw model, relying on a simulation up to next-to-leading order in QCD with parton shower matching. After extensively studying the phenomenology of the $pp\toμ^\pmμ^\pm j j$ process at the amplitude and differential levels, we design a simple collider analysis with remarkable signal-background separation power. At 95\% confidence level we find that the squared muon-heavy neutrino mixing element $\vert V_{μN} \vert^{2}$ can be probed down to about $0.06-0.3 ~ (0.03-0.1)$ for $m_N = 1-10~{\rm TeV}$ with $\mathcal{L}=300$ fb$^{-1}~(3$ ab$^{-1})$. For heavier masses of $m_N = 20~{\rm TeV}$, we report sensitivity for $\vert V_{μN} \vert^{2}\gtrsim 0.5~(0.3)$. The $W^\pm W^\pm$ scattering channel can greatly extend the mass range covered by current LHC searches for heavy Majorana neutrinos and particularly adds invaluable sensitivity above a few hundred GeV. We comment on areas where the analysis can be improved as well as on the applicability to other tests of neutrino mass models.
