{"id":4171,"date":"2011-11-21T20:41:34","date_gmt":"2011-11-22T01:41:34","guid":{"rendered":"http:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=4171"},"modified":"2011-11-21T20:41:39","modified_gmt":"2011-11-22T01:41:39","slug":"still-waiting-for-supersymmetry","status":"publish","type":"post","link":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=4171","title":{"rendered":"Still Waiting for Supersymmetry"},"content":{"rendered":"<p>The headline story at the APS Physics site is <a href=\"http:\/\/physics.aps.org\/articles\/v4\/98\">Still Waiting for Supersymmetry<\/a>, by Sven Heinemeyer, which reports on a <a href=\"http:\/\/physics.aps.org\/featured-article-pdf\/10.1103\/PhysRevLett.107.221804\">PRL article from CMS<\/a> reporting no evidence for supersymmetry.<\/p>\n<p>According to Heinemeyer:<\/p>\n<blockquote><p>It\u2019s important to realize that CMS\u2019s results do not exclude supersymmetric theories. Rather, they only conclusively say one of two things. One possibility is that the CMSSM (the specialized version of the MSSM) is realized in nature, but the supersymmetric partner particles, the gluinos and squarks, are relatively heavy\u2014too heavy to be produced in large numbers at the LHC so far&#8230;<\/p>\n<p>The other interpretation is even simpler: while supersymmetry is realized in nature, it might not take the form described by the CMSSM, but possibly that of any one of the many (GUT scale) models. Different versions of supersymmetry make different predictions for the outcomes of high-energy proton-proton collisions. Many of these outcomes are more complicated than what is shown in Fig. 1, and to see them would require experiments to investigate many more collisions (and to study them for a longer time). Consequently, in these other models, it will only be possible to place much weaker bounds on the new particle masses (so far, however, no such dedicated analysis has been performed).\n<\/p><\/blockquote>\n<p>I would have thought that there&#8217;s an even simpler third alternative: no supersymmetry in nature at all, but I&#8217;m not a SUSY phenomenologist&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The headline story at the APS Physics site is Still Waiting for Supersymmetry, by Sven Heinemeyer, which reports on a PRL article from CMS reporting no evidence for supersymmetry. According to Heinemeyer: It\u2019s important to realize that CMS\u2019s results do &hellip; <a href=\"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=4171\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_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":[8],"tags":[],"class_list":["post-4171","post","type-post","status-publish","format-standard","hentry","category-this-weeks-hype"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4171"}],"version-history":[{"count":3,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4171\/revisions"}],"predecessor-version":[{"id":4174,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4171\/revisions\/4174"}],"wp:attachment":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}