Collider imprints of right handed neutrino magnetic moment operator
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909067713183744 |
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| author | Chun, Eung Jin Mandal, Sanjoy Padhan, Rojalin |
| author_facet | Chun, Eung Jin Mandal, Sanjoy Padhan, Rojalin |
| contents | We consider most general effective Lagrangian up to dimension five, built with Standard Model~(SM) fields and right-handed neutrinos~(RHNs) $N_i$. Assuming that the RHNs are present near the electroweak scale, we study the phenomenology of the RHNs and highlight the differences that arise due to the inclusion of dimension five operators. We specifically focus on the production process $e^+e^-/pp\to N_i N_j$ which comes from the dimension five magnetic moment operator. We find that this production process followed by the decay chains such as $N_i\to N_jγ$, $N_i\toν_jγ$ and $N_i\to\ell^\pm j j$ leads to striking collider signatures which might help to probe the Majorana nature of neutrinos. We discuss the current collider constraints on this operator, as well as projected limit at future colliders. In addition, we discuss the stellar-cooling bounds applicable to the RHN mass below 0.1 GeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_05174 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Collider imprints of right handed neutrino magnetic moment operator Chun, Eung Jin Mandal, Sanjoy Padhan, Rojalin High Energy Physics - Phenomenology We consider most general effective Lagrangian up to dimension five, built with Standard Model~(SM) fields and right-handed neutrinos~(RHNs) $N_i$. Assuming that the RHNs are present near the electroweak scale, we study the phenomenology of the RHNs and highlight the differences that arise due to the inclusion of dimension five operators. We specifically focus on the production process $e^+e^-/pp\to N_i N_j$ which comes from the dimension five magnetic moment operator. We find that this production process followed by the decay chains such as $N_i\to N_jγ$, $N_i\toν_jγ$ and $N_i\to\ell^\pm j j$ leads to striking collider signatures which might help to probe the Majorana nature of neutrinos. We discuss the current collider constraints on this operator, as well as projected limit at future colliders. In addition, we discuss the stellar-cooling bounds applicable to the RHN mass below 0.1 GeV. |
| title | Collider imprints of right handed neutrino magnetic moment operator |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2401.05174 |