{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/detectability-of-collective-neutrino","title":"Detectability of Collective Neutrino Oscillation Signatures in the Supernova Explosion of a 8.8 $M_\\odot$ star","arxiv_id":"1907.01002","date":"2019-07-01","proceeding":null,"authors":["Hirokazu Sasaki","Tomoya Takiwaki","Shio Kawagoe","Shunsaku Horiuchi","Koji Ishidoshiro"],"abstract":"In order to investigate the impact of collective neutrino oscillations (CNO) on the neutrino signal from a nearby supernova, we perform 3-flavor neutrino oscillation simulations employing the multiangle effect. The background hydrodynamic model is based on the neutrino hydrodynamic simulation of a 8.8 \\Msun progenitor star. We find that CNO commences after some 100 ms post bounce. Before this, CNO is suppressed by matter-induced decoherence. In the inverted mass hierarchy, the spectrum of $\\bar{\\nu}_e$ becomes softer after the onset of CNO. To evaluate the detectability of this modification, we define a hardness ratio between the number of high energy neutrino events and low energy neutrino events adopting a fixed critical energy. We show that Hyper-Kamiokande (HK) can distinguish the effect of CNO for supernova distances out to $\\sim 10$ kpc. On the other hand, for the normal mass hierarchy, the spectrum of $\\nu_e$ becomes softer after the onset of CNO, and we show that DUNE can distinguish this feature for supernova distances out to $\\sim 10$ kpc. More work is necessary to optimize the best value of critical energy for maximum sensitivity. We also show that if the spectrum of $\\bar{\\nu}_e$ in HK becomes softer due to CNO, the spectrum of $\\nu_e$ in DUNE becomes harder, and vice versa. This synergistic observations in $\\bar{\\nu}_e$ and $\\nu_e$, by HK and DUNE respectively, will be an intriguing opportunity to test the occurrence of CNO.","url_abs":"https://arxiv.org/abs/1907.01002v3","url_pdf":"https://arxiv.org/pdf/1907.01002v3.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"detectability-of-collective-neutrino","repo_url":"https://github.com/ElonSteveWang/hep_make_bib_v3","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}