{"id":173391,"date":"2014-01-24T11:37:20","date_gmt":"2014-01-24T16:37:20","guid":{"rendered":"https:\/\/dev.totemweb.design\/macommunaute\/evenements\/u10480-la-decouverte-theorique-du-mecanisme-de-higgs-richard-mackenzie-universite-de-montreal\/"},"modified":"2014-01-24T11:37:20","modified_gmt":"2014-01-24T16:37:20","slug":"u10480-la-decouverte-theorique-du-mecanisme-de-higgs-richard-mackenzie-universite-de-montreal","status":"publish","type":"evenements","link":"https:\/\/dev.totemweb.design\/macommunaute\/evenements\/u10480-la-decouverte-theorique-du-mecanisme-de-higgs-richard-mackenzie-universite-de-montreal\/","title":{"rendered":"La \u00abd\u00e9couverte th\u00e9orique\u00bb du m\u00e9canisme de Higgs &#8211; Richard MacKenzie, Universit\u00e9 de Montr\u00e9al"},"content":{"rendered":"<div>\n<p><strong>La \u00abd\u00e9couverte th\u00e9orique\u00bb du m\u00e9canisme de Higgs<\/strong><\/p>\n<p style=\"\">La d\u00e9couverte en 2012 du boson de Higgs est sans doute l&rsquo;une des plus importantes d\u00e9couvertes scientifiques depuis de nombreuses ann\u00e9es.\u00a0 Le travail th\u00e9orique a \u00e9t\u00e9 fait il y a une cinquantaine d&rsquo;ann\u00e9es; son incorporation dans le mod\u00e8le standard de la physique des particules dans les dix ans qui suivaient. Tout ce qui restait \u00e0 faire \u00e9tait une observation exp\u00e9rimentale. De toute \u00e9vidence, cette derni\u00e8re \u00e9tape n&rsquo;\u00e9tait pas du tout triviale : un tour de force monumental \u00e9tait n\u00e9cessaire.<\/p>\n<p style=\"\">Finalement, en d\u00e9cembre 2011 les exp\u00e9riences ATLAS et CMS au laboratoire CERN ont fait une annonce conjointe provisoire; la d\u00e9couverte d\u00e9finitive du Higgs a \u00e9t\u00e9 annonc\u00e9e au cours de l&rsquo;\u00e9t\u00e9 2012. Un an plus tard, deux th\u00e9oriciens (Peter Higgs et Fran\u00e7ois Englert) ont re\u00e7u le Prix Nobel de Physique en 2013.<\/p>\n<p style=\"\">Dans cette pr\u00e9sentation, je vais parler des aspects th\u00e9oriques de la d\u00e9couverte du Higgs : la n\u00e9cessit\u00e9 d&rsquo;attribuer une masse aux bosons de jauge (les particules responsables des forces fondamentales); le d\u00e9fi th\u00e9orique que cela a pr\u00e9sent\u00e9; la r\u00e9alisation qu&rsquo;une particule scalaire peut faire l&rsquo;affaire; les diff\u00e9rents r\u00f4les du boson de Higgs; son int\u00e9gration dans le mod\u00e8le standard. Je vais en cours de route discuter de la question: qui m\u00e9ritait vraiment le Prix Nobel? Cette question est pertinente car la \u00abd\u00e9couverte th\u00e9orique\u00bb a \u00e9t\u00e9 fait presque simultan\u00e9ment par trois groupes de chercheurs, sans parler de travaux ant\u00e9rieurs en physique de la mati\u00e8re condens\u00e9e&#8230; (Pour plus de d\u00e9tails, venez \u00e0 la pr\u00e9sentation!)<\/p>\n<p>Cette conf\u00e9rence s&rsquo;adresse \u00e0 tous, y compris les professeurs, les chercheurs et les \u00e9tudiants des trois cycles.<\/p>\n<p>Le caf\u00e9 est servi \u00e0 partir de 11h20.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>La \u00abd\u00e9couverte th\u00e9orique\u00bb du m\u00e9canisme de Higgs La d\u00e9couverte en 2012 du boson de Higgs est sans doute l&rsquo;une des plus importantes d\u00e9couvertes scientifiques depuis de nombreuses ann\u00e9es.\u00a0 Le travail th\u00e9orique a \u00e9t\u00e9 fait il y a une cinquantaine d&rsquo;ann\u00e9es; son incorporation dans le mod\u00e8le standard de la physique des particules dans les dix ans [&hellip;]<\/p>\n<p><a href=\"https:\/\/dev.totemweb.design\/macommunaute\/evenements\/u10480-la-decouverte-theorique-du-mecanisme-de-higgs-richard-mackenzie-universite-de-montreal\/\">read more<\/a><\/p>","protected":false},"author":14260,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","thematiques":[],"regions":[80],"class_list":["post-173391","evenements","type-evenements","status-publish","hentry","regions-montreal"],"acf":{"evenement_date":"2014-01-31","evenement_date_fin":"2014-01-31","evenement_heure_debut":"11:30:00","evenement_heure_fin":"23:59:59","evenement_recurrence":false,"evenement_recurrence_jours":1,"evenement_recurrence_hebdomadaire":[],"evenement_recurrence_mensuelle_2":[],"evenement_recurrence_fin":null,"evenement_lieu":"","evenement_adresse":"","evenement_site_web":"","evenement_inscription":"","evenement_couts":false,"evenement_frais":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La \u00abd\u00e9couverte th\u00e9orique\u00bb du m\u00e9canisme de Higgs - Richard MacKenzie, Universit\u00e9 de Montr\u00e9al - Ma Communaut\u00e9<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La \u00abd\u00e9couverte th\u00e9orique\u00bb du m\u00e9canisme de Higgs - Richard MacKenzie, Universit\u00e9 de Montr\u00e9al - Ma Communaut\u00e9\" \/>\n<meta property=\"og:description\" content=\"La \u00abd\u00e9couverte th\u00e9orique\u00bb du m\u00e9canisme de Higgs La d\u00e9couverte en 2012 du boson de Higgs est sans doute l&rsquo;une des plus importantes d\u00e9couvertes scientifiques depuis de nombreuses ann\u00e9es.\u00a0 Le travail th\u00e9orique a \u00e9t\u00e9 fait il y a une cinquantaine d&rsquo;ann\u00e9es; 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