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arXiv 2109.05032hep-phastro-ph.HEhep-ex
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中微子在前向LHC探测器上通过偶极门的上散射

Neutrino Up-scattering via the Dipole Portal at Forward LHC Detectors

Ahmed Ismail, Sudip Jana, Roshan Mammen Abraham

摘要:

大型强子对撞机在高快度下的显著中微子通量促使专用的前向探测器研究TeV能量下中微子的性质。我们研究磁偶极之间的相互作用,活跃的中微子和新的无菌状态在乳液和液氩实验,可以位于未来的正向物理设施(FPF)下游的ATLAS相互作用点。中微子从电子上散射产生电子反冲信号,可以探测高亮度LHC(HL-LHC)的参数空间的新区域,特别是由于低动量阈值的液氩探测器。我们还考虑了无菌中微子通过偶极算符的衰变,这导致了一个光子,可以从生产顶点位移。FPF探测器可以测试通过偶极门产生的重至1 GeV的无菌中微子状态,突出了高能LHC中微子作为新物理探测器的用途。

英文摘要:

The significant neutrino flux at high rapidity at the LHC motivates dedicated forward detectors to study the properties of neutrinos at TeV energies. We investigate magnetic dipole interactions between the active neutrinos and new sterile states at emulsion and liquid argon experiments that could be located in a future Forward Physics Facility (FPF) downstream of the ATLAS interaction point. The up-scattering of neutrinos off electrons produces an electron recoil signature that can probe new regions of parameter space at the High Luminosity LHC (HL-LHC), particularly for liquid argon detectors due to low momentum thresholds. We also consider the decay of the sterile neutrino through the dipole operator, which leads to a photon that could be displaced from the production vertex. FPF detectors can test sterile neutrino states as heavy as 1 GeV produced through the dipole portal, highlighting the use of high energy LHC neutrinos as probes of new physics.

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