Abstract
Observation of lepton number (L) violation by two units at colliders would provide evidence for the Majorana nature of neutrinos. We study signals of L-violation in the context of two popular models of neutrino masses, the type-II seesaw model and the Zee model, wherein small neutrino masses arise at the tree-level and one-loop level, respectively. We focus on L-violation signals at the LHC arising through the process pp → ℓ±ℓ′± + jets within these frameworks. We obtain sensitivity to L-violation in the type-II seesaw model for triplet scalar masses up to 700 GeV and in the Zee model for charged scalar masses up to 4.8 TeV at the high-luminosity LHC with an integrated luminosity of 3 ab−1.
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Acknowledgments
This work is supported by the U.S. Department of Energy under grant number DE-SC0016013. Some computing for this project was performed at the High Performance Computing Center at Oklahoma State University, supported in part through the National Science Foundation grant OAC-1531128.
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Babu, K.S., Barman, R.K., Gonçalves, D. et al. Probing lepton number violation and Majorana nature of neutrinos at the LHC. J. High Energ. Phys. 2024, 132 (2024). https://doi.org/10.1007/JHEP06(2024)132
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DOI: https://doi.org/10.1007/JHEP06(2024)132