Lepton Number Violation at the LHC in Radiative Neutrino Mass Models with Leptoquarks
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| Format: | Preprint |
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2025
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| _version_ | 1866912791613407232 |
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| author | Babu, K. S. Barman, Rahool Kumar Gonçalves, Dorival |
| author_facet | Babu, K. S. Barman, Rahool Kumar Gonçalves, Dorival |
| contents | We investigate the prospects for observing lepton number violation (LNV) by two units, $|ΔL| = 2$, at the LHC within the leptoquark variant of the Zee Model, where Majorana neutrino masses arise radiatively at one-loop. The model features an $SU(2)_L$ doublet and singlet leptoquarks, whose interactions produce a distinctive same-sign dilepton plus jets signature, $pp \to \ell^{\pm}\ell'^{\pm} + \text{jets}$. Taking into account current experimental constraints, we identify the dominant production channels for this LNV signal and perform a detailed collider analysis. We find that the HL-LHC can probe leptoquark masses up to $m_{\rm LQ} \sim 1.5~\mathrm{TeV}$ with this process. Observation of this signal would provide a direct test of LNV and would unambiguously establish the Majorana nature of neutrinos. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2512_22756 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Lepton Number Violation at the LHC in Radiative Neutrino Mass Models with Leptoquarks Babu, K. S. Barman, Rahool Kumar Gonçalves, Dorival High Energy Physics - Phenomenology High Energy Physics - Experiment We investigate the prospects for observing lepton number violation (LNV) by two units, $|ΔL| = 2$, at the LHC within the leptoquark variant of the Zee Model, where Majorana neutrino masses arise radiatively at one-loop. The model features an $SU(2)_L$ doublet and singlet leptoquarks, whose interactions produce a distinctive same-sign dilepton plus jets signature, $pp \to \ell^{\pm}\ell'^{\pm} + \text{jets}$. Taking into account current experimental constraints, we identify the dominant production channels for this LNV signal and perform a detailed collider analysis. We find that the HL-LHC can probe leptoquark masses up to $m_{\rm LQ} \sim 1.5~\mathrm{TeV}$ with this process. Observation of this signal would provide a direct test of LNV and would unambiguously establish the Majorana nature of neutrinos. |
| title | Lepton Number Violation at the LHC in Radiative Neutrino Mass Models with Leptoquarks |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2512.22756 |