Decays of a bino-like particle in the low-mass regime
arXiv:2205.08141 · doi:10.21468/SciPostPhys.14.5.134
Abstract
We study the phenomenology associated with a light bino-like neutralino with mass under the tau mass in the context of the R-parity violating Minimal Supersymmetric Standard Model. This is a well-motivated example of scenarios producing potentially light and long-lived exotic particles, which might be testable in far-detector experiments, such as the FASER experiment at the Large Hadron Collider. A quantitative assessment of the discovery potential or the extraction of limits run through a detailed understanding of the interactions of the light exotic fermion with Standard Model matter, in particular, the hadronic sector. Here, we propose a systematic analysis of the decays of such a particle and proceed to a model-independent derivation of the low-energy effects, so that this formalism may be transposed to other UV-completions or even stand as an independent effective field theory. We then stress the diversity of the possible phenomenology and more specifically discuss the features associated with the R-parity violating supersymmetric framework, for example neutron-antineutron oscillations.
arXiv comment50 pages, 5 figures
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- Long-lived neutral fermions at the DUNE near detector
- Searching for a Single Photon from Lightest Neutralino Decays in R-parity-violating Supersymmetry at FASER
- Recasting Bounds on Long-lived Heavy Neutral Leptons in Terms of a Light Supersymmetric R-parity Violating Neutralino
- Searching for long-lived light neutralinos and axionlike particles at the SHiNESS experiment