{"680726":{"#nid":"680726","#data":{"type":"external_news","title":"An Ultrahigh Neutrino Detection Makes Waves","body":[{"value":"\u003Cp dir=\u0022ltr\u0022\u003E\u003Ca href=\u0022https:\/\/physics.gatech.edu\/\u0022\u003ESchool of Physics\u003C\/a\u003E Professor\u0026nbsp;\u003Ca href=\u0022https:\/\/physics.gatech.edu\/user\/ignacio-taboada\u0022\u003EIgnacio Taboada\u003C\/a\u003E provided brief commentary on KM3NeT, a new underwater neutrino experiment that has detected what appears to be the highest-energy cosmic neutrino observed to date.\u003C\/p\u003E\u003Cp dir=\u0022ltr\u0022\u003E\u201cThis is clearly an interesting event. It is also very unusual,\u201d said Taboada, spokesperson for the IceCube experiment in Antarctica. IceCube, which has a similar detector-array design as KM3NeT but is encased in ice rather than water, has detected neutrinos with energies as high as 10 PeV, but nothing in 100 PeV range. \u201cIceCube has worked for 14 years, so it\u2019s weird that we don\u2019t see the same thing,\u201d Taboada said. Taboada is not involved in the KM3Net experiment.\u0026nbsp;\u003C\/p\u003E\u003Cp dir=\u0022ltr\u0022\u003EThe KM3NeT team is aware of this weirdness. They compared the KM3-230213A event to upper limits on the neutrino flux given by IceCube and the Pierre Auger cosmic-ray experiment in Argentina. Taking those limits as given, they found that there was a 1% chance of detecting a 220-PeV neutrino during KM3NeT\u2019s preliminary (287-day) measurement campaign.\u0026nbsp;\u003C\/p\u003E\u003Cp dir=\u0022ltr\u0022\u003EThis also appeared in\u0026nbsp;\u003Ca href=\u0022https:\/\/www.scientificamerican.com\/article\/the-most-energetic-neutrino-ever-seen-makes-a-mediterranean-splash\/\u0022\u003E\u003Cem\u003EScientific American\u003C\/em\u003E\u003C\/a\u003E and\u0026nbsp;\u003Ca href=\u0022https:\/\/www.smithsonianmag.com\/smart-news\/a-record-breaking-ghost-particle-from-outer-space-made-a-splash-of-light-in-the-mediterranean-180986062\/\u0022\u003E\u003Cem\u003ESmithsonian Magazine\u003C\/em\u003E\u003C\/a\u003E.\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp dir=\u0022ltr\u0022\u003E\u003Ca href=\u0022https:\/\/physics.gatech.edu\/\u0022\u003ESchool of Physics\u003C\/a\u003E Professor\u0026nbsp;\u003Ca href=\u0022https:\/\/physics.gatech.edu\/user\/ignacio-taboada\u0022\u003EIgnacio Taboada\u003C\/a\u003E provided brief commentary on KM3NeT, a new underwater neutrino experiment that has detected what appears to be the highest-energy cosmic neutrino observed to date.\u003C\/p\u003E\u003Cp dir=\u0022ltr\u0022\u003E\u201cThis is clearly an interesting event. It is also very unusual,\u201d said Taboada, spokesperson for the IceCube experiment in Antarctica. IceCube, which has a similar detector-array design as KM3NeT but is encased in ice rather than water, has detected neutrinos with energies as high as 10 PeV, but nothing in 100 PeV range. \u201cIceCube has worked for 14 years, so it\u2019s weird that we don\u2019t see the same thing,\u201d Taboada said. Taboada is not involved in the KM3Net experiment.\u0026nbsp;\u003C\/p\u003E\u003Cp dir=\u0022ltr\u0022\u003EThe KM3NeT team is aware of this weirdness. They compared the KM3-230213A event to upper limits on the neutrino flux given by IceCube and the Pierre Auger cosmic-ray experiment in Argentina. Taking those limits as given, they found that there was a 1% chance of detecting a 220-PeV neutrino during KM3NeT\u2019s preliminary (287-day) measurement campaign.\u0026nbsp;\u003C\/p\u003E\u003Cp dir=\u0022ltr\u0022\u003EThis also appeared in\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003Ca href=\u0022https:\/\/www.scientificamerican.com\/article\/the-most-energetic-neutrino-ever-seen-makes-a-mediterranean-splash\/\u0022\u003E\u003Cem\u003E\u003Cstrong\u003EScientific American\u003C\/strong\u003E\u003C\/em\u003E\u003C\/a\u003E\u003Cstrong\u003E and\u0026nbsp;\u003C\/strong\u003E\u003Ca href=\u0022https:\/\/www.smithsonianmag.com\/smart-news\/a-record-breaking-ghost-particle-from-outer-space-made-a-splash-of-light-in-the-mediterranean-180986062\/\u0022\u003E\u003Cem\u003E\u003Cstrong\u003ESmithsonian Magazine\u003C\/strong\u003E\u003C\/em\u003E\u003C\/a\u003E\u003Cstrong\u003E.\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":"","uid":"36583","created_gmt":"2025-02-26 14:08:49","changed_gmt":"2025-02-27 20:07:22","author":"lvidal7","boilerplate_text":"","field_publication":"","publication":"Physics Magazine","field_article_url":"","publication_url":"https:\/\/physics.aps.org\/articles\/v18\/35","dateline":{"date":"2025-02-12T00:00:00-05:00","iso_date":"2025-02-12T00:00:00-05:00","tz":"America\/New_York"},"extras":[],"groups":[{"id":"1278","name":"College of Sciences"},{"id":"126011","name":"School of Physics"}],"categories":[{"id":"150","name":"Physics and Physical Sciences"},{"id":"135","name":"Research"},{"id":"134","name":"Student and Faculty"}],"keywords":[{"id":"4896","name":"College of Sciences"},{"id":"166937","name":"School of Physics"},{"id":"11442","name":"neutrinos"},{"id":"192252","name":"cos-planetary"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}