Neutrino Mass Induced $n$-$\overline{n}$ Oscillation
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arXiv
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| Natura: | Preprint |
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2025
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| author | Dorsner, Ilja Fajfer, Svjetlana Saad, Shaikh |
| author_facet | Dorsner, Ilja Fajfer, Svjetlana Saad, Shaikh |
| contents | The Georgi-Glashow model is the simplest possible attempt at grand unification. However, due to its particle content, the model preserves a global $U(1)_{B-L}$ symmetry, where $B$ and $L$ are baryon and lepton numbers, respectively. It thus leaves neutrinos massless just as the Standard Model does. The extensions of the Georgi-Glashow model that break lepton number by two units, i.e., scenarios with $|ΔL|=2$ operator(s), naturally generate potentially viable Majorana neutrino masses. Since the dynamics that yields $|ΔL| = 2$ interactions unavoidably induces $|ΔB| = 2$ transitions via $B\!-\!L$ breaking, these extensions consequentially lead to intriguing processes such as neutron--antineutron ($n$--$\overline{n}$) oscillation. We investigate this intrinsic connection between neutrino mass generation and $n$--$\overline{n}$ oscillation within a number of representative extensions of the Georgi-Glashow model that can yield realistic neutrino masses and mixing parameters. These extensions include the tree-level seesaw mechanism realizations of the Type I, II, and III varieties, as well as the one-loop and two-loop radiative neutrino mass models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_16103 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Neutrino Mass Induced $n$-$\overline{n}$ Oscillation Dorsner, Ilja Fajfer, Svjetlana Saad, Shaikh High Energy Physics - Phenomenology The Georgi-Glashow model is the simplest possible attempt at grand unification. However, due to its particle content, the model preserves a global $U(1)_{B-L}$ symmetry, where $B$ and $L$ are baryon and lepton numbers, respectively. It thus leaves neutrinos massless just as the Standard Model does. The extensions of the Georgi-Glashow model that break lepton number by two units, i.e., scenarios with $|ΔL|=2$ operator(s), naturally generate potentially viable Majorana neutrino masses. Since the dynamics that yields $|ΔL| = 2$ interactions unavoidably induces $|ΔB| = 2$ transitions via $B\!-\!L$ breaking, these extensions consequentially lead to intriguing processes such as neutron--antineutron ($n$--$\overline{n}$) oscillation. We investigate this intrinsic connection between neutrino mass generation and $n$--$\overline{n}$ oscillation within a number of representative extensions of the Georgi-Glashow model that can yield realistic neutrino masses and mixing parameters. These extensions include the tree-level seesaw mechanism realizations of the Type I, II, and III varieties, as well as the one-loop and two-loop radiative neutrino mass models. |
| title | Neutrino Mass Induced $n$-$\overline{n}$ Oscillation |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.16103 |