{"id":1811,"date":"2014-06-03T13:39:27","date_gmt":"2014-06-03T18:39:27","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=1811"},"modified":"2014-06-03T13:41:42","modified_gmt":"2014-06-03T18:41:42","slug":"mesure-ultra-precise-de-la-charge-electrique-de-lantimatiere","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/mesure-ultra-precise-de-la-charge-electrique-de-lantimatiere\/","title":{"rendered":"Mesure ultra-pr\u00e9cise de la charge \u00e9lectrique de l&#8217;antimati\u00e8re<img src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/01\/canada_flag_icon_small.gif\">"},"content":{"rendered":"<div id=\"attachment_1806\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/ALPHA.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1806\" class=\"size-full wp-image-1806\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/ALPHA.jpg\" alt=\"L\u2019instrument Alpha, construit en partie au Canada, est en activit\u00e9 au CERN \u00e0 Gen\u00e8ve. Il permet aux chercheurs de cr\u00e9er de l\u2019antihydrog\u00e8ne, de le capturer dans un pi\u00e8ge magn\u00e9tique et de mesurer ses propri\u00e9t\u00e9s. (Cr\u00e9dit: Maximilien Brice, CERN)\" width=\"300\" height=\"200\" \/><\/a><p id=\"caption-attachment-1806\" class=\"wp-caption-text\">L\u2019instrument Alpha, construit en partie au Canada, est en activit\u00e9 au CERN \u00e0 Gen\u00e8ve. Il permet aux chercheurs de cr\u00e9er de l\u2019antihydrog\u00e8ne, de le capturer dans un pi\u00e8ge magn\u00e9tique et de mesurer ses propri\u00e9t\u00e9s. (Cr\u00e9dit: Maximilien Brice, <a href=\"http:\/\/cds.cern.ch\/record\/1494099&quot;\">CERN<\/a>)<\/p><\/div>\n<p><span style=\"color: #000000;\">Des chercheurs ont mesur\u00e9 avec la meilleure pr\u00e9cision \u00e0 ce jour la charge \u00e9lectrique de l\u2019antihydrog\u00e8ne, l\u2019atome d\u2019antimati\u00e8re de l\u2019hydrog\u00e8ne. <\/span><\/p>\n<p><span style=\"color: #000000;\">L\u2019\u00e9quipe internationale qui comprend plusieurs Canadiens ont tent\u00e9 de voir comment un atome d\u2019antihydrog\u00e8ne r\u00e9agit quand il est soumis \u00e0 des champs \u00e9lectriques. Comme pr\u00e9vu, l\u2019antihydrog\u00e8ne a une charge neutre qui correspond \u00e0 (-1.3 \u00b1 1.1 \u00b1 0.4) \u00d7 10<\/span><span style=\"color: #000000;\">-8<\/span><span style=\"color: #000000;\"> de la charge \u00e9lectrique \u00e9l\u00e9mentaire. Cette mesure est un million de fois plus pr\u00e9cises que les mesures pr\u00e9c\u00e9dentes. <\/span><\/p>\n<p><span style=\"color: #000000;\">Cette exp\u00e9rience et les autres qui suivront tentent de d\u00e9terminer pourquoi l\u2019antimati\u00e8re est si rare dans l\u2019univers, alors qu\u2019elle \u00e9tait aussi commune que la mati\u00e8re apr\u00e8s le Big Bang.<\/span><\/p>\n<p>Pour lire l\u2019article original publi\u00e9 dans\u00a0<em>PLOS ONE<\/em><em>\u00a0<\/em>le\u00a0<strong>3 juin\u00a0<\/strong><strong>2014<\/strong>,\u00a0<span style=\"text-decoration: underline;\"><a href=\"http:\/\/www.nature.com\/ncomms\/2014\/140603\/ncomms4955\/full\/ncomms4955.html\" target=\"_blank\">cliquez\u00a0ici<\/a><\/span>.<\/p>\n<p><span style=\"text-decoration: underline;\"><em><strong>Auteur \u00e0 contacter pour plus d\u2019informations<\/strong><\/em><\/span><\/p>\n<h4><a style=\"color: #1155cc;\" href=\"http:\/\/www.triumf.ca\/alpha-antimatter-project-cern\" target=\"_blank\">Makoto Fujiwara<\/a><span style=\"color: #000000;\">, TRIUMF &#8211; Laboratoire national du Canada en mati\u00e8re de recherche nucl\u00e9aire et de physique des particules, British Columbia<\/span><\/h4>\n<h4><a style=\"color: #1155cc;\" href=\"http:\/\/www.hep.yorku.ca\/menary\/\" target=\"_blank\">Scott Menary<\/a><span style=\"color: #000000;\">, Universit\u00e9 York, Ontario<\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs ont mesur\u00e9 avec la meilleure pr\u00e9cision \u00e0 ce jour la charge \u00e9lectrique de l\u2019antihydrog\u00e8ne, l\u2019atome d\u2019antimati\u00e8re de l\u2019hydrog\u00e8ne. L\u2019\u00e9quipe internationale qui comprend plusieurs Canadiens ont tent\u00e9 de voir comment un atome d\u2019antihydrog\u00e8ne r\u00e9agit quand il est soumis \u00e0 des champs \u00e9lectriques. Comme pr\u00e9vu, l\u2019antihydrog\u00e8ne a une charge neutre qui correspond \u00e0 (-1.3 \u00b1 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1806,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[531],"tags":[1695,1303,402,846,1696],"class_list":["post-1811","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest-fr","tag-antimatiere","tag-chimie","tag-colombie-britannique","tag-ontario-fr","tag-physique"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/ALPHA.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-td","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1811","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=1811"}],"version-history":[{"count":2,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1811\/revisions"}],"predecessor-version":[{"id":1815,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1811\/revisions\/1815"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/1806"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=1811"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=1811"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=1811"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}