The $L_μ-L_τ$ solution to the IceCube Ultra High Energy neutrino deficit in light of NA64
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910735481700352 |
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| author | de la Vega, Leon M. G. Peinado, Eduardo Wudka, Jose |
| author_facet | de la Vega, Leon M. G. Peinado, Eduardo Wudka, Jose |
| contents | In this work we analyze the scenario where a MeV scale $L_μ- L_τ$ gauge boson can explain the deficit in the diffuse ultra high energy (UHE) astrophysical neutrino spectrum observed in IceCube, as well as the discrepancy between experimental and $e^+e^-$ dispersion data driven SM calculations of the muon anomalous magnetic moment. We map the parameter space of the model where the elastic resonant s-channel scattering of UHE neutrinos with the cosmic neutrino background, mediated by the new Z', can improve the description of the observed cascade and track spectra over the no-scattering hypothesis. Comparing to recent NA64$μ$ results, we find that some part of the parameter space remains unexplored, but at a data volume of $10^{11}$ muons on target NA64$μ$ will completely probe this region. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_19968 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The $L_μ-L_τ$ solution to the IceCube Ultra High Energy neutrino deficit in light of NA64 de la Vega, Leon M. G. Peinado, Eduardo Wudka, Jose High Energy Physics - Phenomenology In this work we analyze the scenario where a MeV scale $L_μ- L_τ$ gauge boson can explain the deficit in the diffuse ultra high energy (UHE) astrophysical neutrino spectrum observed in IceCube, as well as the discrepancy between experimental and $e^+e^-$ dispersion data driven SM calculations of the muon anomalous magnetic moment. We map the parameter space of the model where the elastic resonant s-channel scattering of UHE neutrinos with the cosmic neutrino background, mediated by the new Z', can improve the description of the observed cascade and track spectra over the no-scattering hypothesis. Comparing to recent NA64$μ$ results, we find that some part of the parameter space remains unexplored, but at a data volume of $10^{11}$ muons on target NA64$μ$ will completely probe this region. |
| title | The $L_μ-L_τ$ solution to the IceCube Ultra High Energy neutrino deficit in light of NA64 |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.19968 |