{"id":2154,"date":"2022-04-12T09:16:38","date_gmt":"2022-04-12T12:16:38","guid":{"rendered":"https:\/\/www.ufrgs.br\/cms\/?p=2154"},"modified":"2022-04-19T12:14:47","modified_gmt":"2022-04-19T15:14:47","slug":"high-precision-measurement-of-the-w-boson-mass-with-the-cdf-ii-detector","status":"publish","type":"post","link":"https:\/\/www.ufrgs.br\/cms\/high-precision-measurement-of-the-w-boson-mass-with-the-cdf-ii-detector\/","title":{"rendered":"An upset to the standard model"},"content":{"rendered":"\n<p><em>W<\/em>\u00a0bosons mediate the weak interaction, one of the fundamental forces in physics. Because the Standard Model (SM) of particle physics places tight constraints on the mass of the\u00a0<em>W<\/em>\u00a0boson, measuring the mass puts the SM to the test. The Collider Detector at Fermilab (<a rel=\"noreferrer noopener\" href=\"https:\/\/en.wikipedia.org\/wiki\/Collider_Detector_at_Fermilab\" target=\"_blank\">CDF<\/a>) Collaboration now reports a precise measurement of the\u00a0<em>W<\/em>\u00a0boson mass extracted from data taken at the Tevatron particle accelerator. Surprisingly, the researchers found that the mass of the boson was significantly higher than the SM predicts, with a discrepancy of <a rel=\"noreferrer noopener\" href=\"https:\/\/www.youtube.com\/watch?v=OE3slL0trYc&amp;list=PLzk87GkUC3kbb9BsqTgHZ_1FZJ2kxkSwO\" target=\"_blank\">7 (seven) standard deviations<\/a> (<a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.abm0101\">link<\/a>). Link to the CDF analysis <a rel=\"noreferrer noopener\" href=\"https:\/\/www.science.org\/doi\/10.1126\/science.abk1781\" target=\"_blank\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>W\u00a0bosons mediate the weak interaction, one of the fundamental forces in physics. Because the Standard Model (SM) of particle physics places tight constraints on the mass of the\u00a0W\u00a0boson, measuring the mass puts the SM to the test. The Collider Detector at Fermilab (CDF) Collaboration now reports a precise measurement of the\u00a0W\u00a0boson mass extracted from data [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2155,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[83,87,85,81],"class_list":["post-2154","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bosons-en","tag-fermilab","tag-new-physics","tag-tevatron","tag-w-boson"],"featured_image_src":"https:\/\/www.ufrgs.br\/cms\/wp-content\/uploads\/2022\/04\/science.abk1781-f1.jpg","author_info":{"display_name":"gerente","author_link":"https:\/\/www.ufrgs.br\/cms\/author\/gerente\/"},"_links":{"self":[{"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/posts\/2154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/comments?post=2154"}],"version-history":[{"count":0,"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/posts\/2154\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/media\/2155"}],"wp:attachment":[{"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/media?parent=2154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/categories?post=2154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ufrgs.br\/cms\/wp-json\/wp\/v2\/tags?post=2154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}