ANUBIS和MAPP的R宇称破坏和轻中微子
R-parity Violation and Light Neutralinos at ANUBIS and MAPP
摘要：
在R-宇称破坏超对称中，最轻的中性伴子可能非常轻，甚至没有质量。对于质量在$500$ MeV $\lesssim m_{\tildeχ^0_1}\lesssim 4.5$ GeV范围内的中性伴子可以在强子碰撞中产生，从稀有介子衰变通过R宇称破坏耦合，随后衰变为较轻的介子和带电轻子。由于中性伴子的质量小，且R宇称破坏耦合小，最轻的中性伴子寿命长，导致在固定靶和对撞机实验中顶点移位。在这项工作中，我们研究这样的签名在拟议的实验ANUBIS和MAPP在大型强子对撞机。我们还比较了它们在这些情况下的灵敏度与其他现有的和拟议中的实验在LHC，如ATLAS，CODEX-B，和MATHUSLA。我们发现，ANUBIS和MAPP可以显示出互补或优越的灵敏度。
英文摘要：
In R-parity-violating supersymmetry the lightest neutralino can be very light, even massless. For masses in the range $500$ MeV$\lesssim m_{\tildeχ^0_1}\lesssim 4.5$ GeV the neutralino can be produced in hadron collisions from rare meson decays via an R-parity violating coupling, and subsequently decay to a lighter meson and a charged lepton. Due to the small neutralino mass and for small R-parity violating coupling the lightest neutralino is long-lived, leading to displaced vertices at fixed-target and collider experiments. In this work, we study such signatures at the proposed experiments ANUBIS and MAPP at the LHC. We also compare their sensitivity reach in these scenarios with that of other present and proposed experiments at the LHC such as ATLAS, CODEX-b, and MATHUSLA. We find that ANUBIS and MAPP can show complementary or superior sensitivity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
