中微子实验中的渺子粒子。

Millicharged Particles in Neutrino Experiments.

机构信息

Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, Ontario N2L 2Y5, Canada.

Department of Physics & Astronomy, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4M1, Canada.

出版信息

Phys Rev Lett. 2019 Feb 22;122(7):071801. doi: 10.1103/PhysRevLett.122.071801.

DOI:10.1103/PhysRevLett.122.071801

PMID:30848629

Abstract

We set constraints and future sensitivity projections on millicharged particles (MCPs) based on electron scattering data in numerous neutrino experiments, starting with MiniBooNE and the Liquid Scintillator Neutrino Detector (LSND). Both experiments are found to provide new (and leading) constraints in certain MCP mass windows: 5-35 MeV for LSND and 100-180 MeV for MiniBooNE. Furthermore, we provide projections for the ongoing Fermilab SBN program, the Deep Underground Neutrino Experiment (DUNE), and the proposed Search for Hidden Particles (SHIP) experiment. In the SBN program, SBND and MicroBooNE have the capacity to provide the leading bounds in the 100-300 MeV mass regime. DUNE and SHIP are capable of probing parameter space for MCP masses in the range of 5 MeV-5 GeV that is significantly beyond the reach of existing bounds, including those from collider searches and, in the case of DUNE, the SLAC mQ experiment.

摘要

我们根据多个中微子实验中的电子散射数据，为微电荷粒子（MCPs）设定了约束条件和未来敏感性预测，其中包括 MiniBooNE 和液体闪烁体中微子探测器（LSND）。这两个实验都在某些 MCP 质量窗口中提供了新的（领先的）约束条件：LSND 的 5-35 MeV 和 MiniBooNE 的 100-180 MeV。此外，我们还对正在进行的费米实验室 SBN 计划、深地下中微子实验（DUNE）以及拟议的寻找隐藏粒子（SHIP）实验进行了预测。在 SBN 计划中，SBND 和 MicroBooNE 有能力在 100-300 MeV 质量范围内提供领先的约束条件。DUNE 和 SHIP 能够探测到 MCP 质量范围在 5 MeV-5 GeV 的参数空间，这远远超出了现有约束条件的范围，包括来自对撞机搜索的约束条件，以及在 DUNE 的情况下，来自 SLAC mQ 实验的约束条件。