论文标题
中微子 - 中微子碰撞的物理案例
The physics case for neutrino-neutrino collisions
论文作者
论文摘要
解决中微子的质量起源和特性对粒子物理，男生生和宇宙学具有强烈的兴趣。流行的解释涉及超出标准模型的物理学，例如，dimension-5 Weinberg操作员或由``SeeSaw''模型引起的重大主要中微子。电流中微子质量的当前最佳直接限制，该质量源自核β衰变或中微子双β衰减过程，在亚电伏洛尔特水平上。在这里，我们提出了一种新型的中微子中微子对撞机，其中中微子束是由TEV量表次衰变产生的。这种碰撞可以在中微子和抗中微子，中微子和中微子之间发生。我们发现，以大约$ 10^{ - 5} $/fb的微小集成的光度，我们已经期望观察直接中微子抗中性抗中性抗niHilination，$ν\barν\barν\ rightarrow {\ rm z} $，这也为探索中性的股权$ b bar \ barow \ \ x \ x {低亮度需求可以容纳相对较大的发射音。这样的设备还可以通过$νν\ rightarrow {\ rm h h} $探测较重的主要中微子和有效的majorana中微子质量，以使电子和muon类型都达到竞争水平。
Addressing the mass origin and properties of neutrinos is of strong interest to particle physics, baryogenesis and cosmology. Popular explanations involve physics beyond the standard model, for example, the dimension-5 Weinberg operator or heavy Majorana neutrinos arising from ``seesaw'' models. The current best direct limits on the electron neutrino mass, derived from nuclei beta decay or neutrinoless double beta decay processes, are at the sub-electronvolt level. Here we propose a novel neutrino neutrino collider where the neutrino beam is generated from TeV scale muon decays. Such collisions can happen between either neutrinos and anti-neutrinos, or neutrinos and neutrinos. We find that with a tiny integrated luminosity of about $10^{-5}$/fb we can already expect to observe direct neutrino anti-neutrino annihilation, $ν\barν\rightarrow {\rm Z}$, which also opens the door to explore neutrino related resonances $ν\barν\rightarrow {\rm X}$. The low luminosity requirement can accommodate a relatively large emittance muon beam. Such a device would also allow for probing heavy Majorana neutrino and effective Majorana neutrino mass through $νν\rightarrow {\rm H H}$ to a competitive level, for both electron and muon types.
