Lμ−Lτ gauge bosons in beam dumps and supernovae
Published in arXiv preprint, 2025
We study the phenomenology of a sub-GeV Lμ−Lτ gauge boson. We find discrepancies with existing literature in sensitivity projections for the upcoming SHiP experiment and in the treatment of supernovae cooling constraints. We present a quantitative analysis of different production modes in beam dumps and compare our results to previous work. In the context of supernovae, we re-evaluate the standard supernova cooling bounds from SN1987A and analyze additional supernova-based probes: diffusive cooling, constraints from the existence of low-energy supernovae, and the absence of a high-energy neutrino signal from SN1987A.
arXiv: 2511.09619
Report Numbers: FERMILAB-PUB-25-0818-T, MI-HET-869, CALT-TH/2025-034, CERN-TH-2025-229
Recommended citation: Nikita Blinov, Patrick J. Fox, Kevin J. Kelly, Ryan Plestid, Tao Zhou. (2025). "Lμ−Lτ gauge bosons in beam dumps and supernovae." arXiv preprint arXiv:2511.09619.
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