SciPost Submission Page
Decays of a bino-like particle in the low-mass regime
by Florian Domingo, Herbi K. Dreiner
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Submission summary
| Authors (as registered SciPost users): | Herbert Dreiner |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2205.08141v2 (pdf) |
| Date accepted: | 2023-02-15 |
| Date submitted: | 2022-08-02 11:17 |
| Submitted by: | Dreiner, Herbert |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
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.
Published as SciPost Phys. 14, 134 (2023)
Reports on this Submission
Strengths
1 - well written and concise
2 - well-chosen strawman model for long-lived particles and their phenomenology at colliders
Weaknesses
- no obvious ones.
Report
I think this paper should be published, it easily meets the criteria of scipost physics.
Requested changes
- none.
Report
It is a very detailed article considering the decays of a light neutralino into baryon and lepton number violating channels. It is a serious attempt to cover most of the relevant issues related to production and decay channels. It has some limitations, but they are recognized by the authors, who in addition suggest ways of improving their analysis. Overall, I think this is a very good article and deserves to be published.