{"id":196831,"date":"2024-09-30T17:27:45","date_gmt":"2024-09-30T22:27:45","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2024\/09\/incredibly-rare-13-in-100-billion-event-seen-at-cern-particle-accelerator"},"modified":"2024-09-30T17:27:45","modified_gmt":"2024-09-30T22:27:45","slug":"incredibly-rare-13-in-100-billion-event-seen-at-cern-particle-accelerator","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2024\/09\/incredibly-rare-13-in-100-billion-event-seen-at-cern-particle-accelerator","title":{"rendered":"Incredibly Rare 13 In 100 Billion Event Seen At CERN Particle Accelerator"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/Y-AARb_66KI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p><a href=\"https:\/\/www.iflscience.com\/cern-experiment-report-strong-evidence-of-extremely-rare-decay-event-56854\" target=\"_blank\" rel=\"noopener noreferrer\">In 2020<\/a>, the team reported evidence of this rare form of decay being detected by the experiment. Now, after far more collisions, including higher-energy collisions, the team reports a <a href=\"https:\/\/home.cern\/resources\/faqs\/five-sigma\" target=\"_blank\" rel=\"noopener noreferrer\">5-sigma detection<\/a>, meaning there is a 0.00006 percent chance that the detection is a statistical fluke.<\/p>\n<p>\u201cWith this measurement, K<sup>+<\/sup> \u2192 \u03c0<sup>+<\/sup>\u03bd\u1e7d becomes the rarest decay established at discovery level \u2013 the famous 5 sigma,\u201d Cristina Lazzeroni, Professor in Particle Physics at the University of Birmingham, said in a <a href=\"https:\/\/phys.org\/news\/2024-09-ultra-rare-particle-decay-uncover.html\" target=\"_blank\" rel=\"noopener noreferrer\">statement<\/a>. \u201cThis difficult analysis is the result of excellent teamwork, and I am extremely proud of this new result.\u201d<\/p>\n<p>While the decay is rare, as predicted by the Standard Model, it is around 50 percent higher than expected, occurring about 13 times in 100 billion. It is unclear what causes this discrepancy between the Standard Model\u2019s predictions and the results observed, with possible explanations including new particles or new physics, both of which are pretty exciting.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In 2020, the team reported evidence of this rare form of decay being detected by the experiment. Now, after far more collisions, including higher-energy collisions, the team reports a 5-sigma detection, meaning there is a 0.00006 percent chance that the detection is a statistical fluke. \u201cWith this measurement, K+ \u2192 \u03c0+\u03bd\u1e7d becomes the rarest decay [\u2026]<\/p>\n","protected":false},"author":396,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[],"class_list":["post-196831","post","type-post","status-publish","format-standard","hentry","category-particle-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/196831","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/396"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=196831"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/196831\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=196831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=196831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=196831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}