论文标题
LHC的同一签名DILEPTON生产中的CP违规
CP Violation in Same-sign Dilepton Production at the LHC
论文作者
论文摘要
如果中微子是主要的粒子，则可能有可能使用低能的Lepton-number-violating（LNV）过程，例如中微子双β（$0νββ$）衰减。也可以在LHC上观察到高能$0νβ$类似LNV的过程。这些以最终状态存在相同障碍的存在（例如$ {\ bar u} d \ to t {\ bar b} \，e^ - μ^ - $）。在本文中，我们表明在此过程中可能存在CP侵略三重产品（TPS），并且可以在LHC处进行测量。如果观察到非零TP，它将为我们提供有关基础新物理（NP）的大量信息。我们会知道（至少）有两个干扰NP振幅，具有不同的弱相和不同的Lorentz结构。而且，如果我们对NP有一些了解，例如，通过直接生产NP颗粒，我们可以获取有关其耦合的幅度和相对阶段的信息。
If the neutrino is a Majorana particle, low-energy lepton-number-violating (LNV) processes, such as neutrinoless double-beta ($0νββ$) decay, are possible. It may also be possible to observe high-energy $0νββ$-like LNV processes at the LHC. These are distinguished by the presence of same-sign dileptons in the final state (e.g., ${\bar u} d \to t {\bar b} \, e^- μ^-$). In this paper, we show that CP-violating triple products (TPs) may be present in the process, and may be measurable at the LHC. If a nonzero TP were observed, it would give us much information about the underlying new physics (NP). We would know that there are (at least) two interfering NP amplitudes, with different weak phases and different Lorentz structures. And if we had some knowledge of the NP, e.g., by direct production of NP particles, we could get information about the magnitudes and relative phases of its couplings.
