{"id":1027,"date":"2017-08-21T13:21:35","date_gmt":"2017-08-21T04:21:35","guid":{"rendered":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/"},"modified":"2017-08-21T13:21:35","modified_gmt":"2017-08-21T04:21:35","slug":"b-sll_decays_standard_model_and_new_physics_facts_and_fantasy","status":"publish","type":"seminar","link":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/","title":{"rendered":"b->sll decays, Standard Model and New Physics: facts and fantasy"},"content":{"rendered":"

Recent data on b\u2192s\u2113+\u2113\u2212 transitions (\u2113=e,\u03bc) exhibit a very interesting pattern of deviations from Standard Model expectations. I will recall the current situation of these anomalies in the B\u2192K\u2217\u03bc+\u03bc\u2212 decay, as well as for other outstanding b\u2192s\u2113+\u2113\u2212 observables, in particular those indicating a violation of lepton-flavour universality (LFU). I will show how a model-independent global fit of b\u2192s\u2113+\u2113\u2212 observables favours several New Physics scenarios with high significances, with a remarkable degree of consistency between LFU-violating ratios and b\u2192s\u03bc+\u03bc\u2212 observables. I will discuss alternative Standard Model explanations for these anomalies critically, relating them to issues in the corresponding theoretical computation. Finally, I will introduce new LFU-violating observables of interest for LHCb and Belle II which are able to shed further light on the cause of these anomalies.<\/p>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[53],"acf":{"s_now_accepting":true,"s_date_order":"2017-09-01 15:00:00","s_date_end":null,"s_date_text":"","s_text":"S\u00e9bastien Descotes-Genon","s_place":"KMI Science Symposia (ES635)","s_place_other":"","s_categoryother":"","s_poster":"","s_poster2":"","s_slide":""},"yoast_head":"\nb->sll decays, Standard Model and New Physics: facts and fantasy - KMI - Nagoya University<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"b->sll decays, Standard Model and New Physics: facts and fantasy - KMI - Nagoya University\" \/>\n<meta property=\"og:description\" content=\"Recent data on b\u2192s\u2113+\u2113\u2212 transitions (\u2113=e,\u03bc) exhibit a very interesting pattern of deviations from Standard Model expectations. I will recall the current situation of these anomalies in the B\u2192K\u2217\u03bc+\u03bc\u2212 decay, as well as for other outstanding b\u2192s\u2113+\u2113\u2212 observables, in particular those indicating a violation of lepton-flavour universality (LFU). I will show how a model-independent global fit of b\u2192s\u2113+\u2113\u2212 observables favours several New Physics scenarios with high significances, with a remarkable degree of consistency between LFU-violating ratios and b\u2192s\u03bc+\u03bc\u2212 observables. I …\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/\" \/>\n<meta property=\"og:site_name\" content=\"KMI - Nagoya University\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/\",\"url\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/\",\"name\":\"b->sll decays, Standard Model and New Physics: facts and fantasy - KMI - Nagoya University\",\"isPartOf\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website\"},\"datePublished\":\"2017-08-21T04:21:35+00:00\",\"dateModified\":\"2017-08-21T04:21:35+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Seminars\",\"item\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"b->sll decays, Standard Model and New Physics: facts and fantasy\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website\",\"url\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/\",\"name\":\"KMI - Nagoya University\",\"description\":\"Nagoya University: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI)\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"b->sll decays, Standard Model and New Physics: facts and fantasy - KMI - Nagoya University","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/","og_locale":"en_US","og_type":"article","og_title":"b->sll decays, Standard Model and New Physics: facts and fantasy - KMI - Nagoya University","og_description":"Recent data on b\u2192s\u2113+\u2113\u2212 transitions (\u2113=e,\u03bc) exhibit a very interesting pattern of deviations from Standard Model expectations. I will recall the current situation of these anomalies in the B\u2192K\u2217\u03bc+\u03bc\u2212 decay, as well as for other outstanding b\u2192s\u2113+\u2113\u2212 observables, in particular those indicating a violation of lepton-flavour universality (LFU). I will show how a model-independent global fit of b\u2192s\u2113+\u2113\u2212 observables favours several New Physics scenarios with high significances, with a remarkable degree of consistency between LFU-violating ratios and b\u2192s\u03bc+\u03bc\u2212 observables. I …","og_url":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/","og_site_name":"KMI - Nagoya University","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/","url":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/","name":"b->sll decays, Standard Model and New Physics: facts and fantasy - KMI - Nagoya University","isPartOf":{"@id":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website"},"datePublished":"2017-08-21T04:21:35+00:00","dateModified":"2017-08-21T04:21:35+00:00","breadcrumb":{"@id":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/1027\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/"},{"@type":"ListItem","position":2,"name":"Seminars","item":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/"},{"@type":"ListItem","position":3,"name":"b->sll decays, Standard Model and New Physics: facts and fantasy"}]},{"@type":"WebSite","@id":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website","url":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/","name":"KMI - Nagoya University","description":"Nagoya University: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI)","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/wp-json\/wp\/v2\/seminar\/1027"}],"collection":[{"href":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/wp-json\/wp\/v2\/seminar"}],"about":[{"href":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/wp-json\/wp\/v2\/types\/seminar"}],"wp:attachment":[{"href":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/wp-json\/wp\/v2\/media?parent=1027"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/wp-json\/wp\/v2\/tags?post=1027"},{"taxonomy":"seminar_category","embeddable":true,"href":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/wp-json\/wp\/v2\/seminar_category?post=1027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}