{"id":947,"date":"2015-04-23T14:34:56","date_gmt":"2015-04-23T05:34:56","guid":{"rendered":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/947\/"},"modified":"2015-04-23T14:34:56","modified_gmt":"2015-04-23T05:34:56","slug":"20150422_nakazawa","status":"publish","type":"seminar","link":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/947\/","title":{"rendered":"Nuclear matter with hyperon in neutron star under nuclear physics with double strangeness"},"content":{"rendered":"<p>Mixing of hyperons was strongly suggested in neutron stars to support their masses (typically ~1.4 <i>M<\/i><sub>\u25ce<\/sub> , where <i>M<\/i><sub>\u25ce<\/sub> is a solar mass). Although three body forces with nucleon(<i>N<\/i>) and hyperon are introduced to support the recent observed massive neutron star with (1.97 +\/- 0.04)<i>M<\/i><sub>\u25ce<\/sub>, some other theorists claim that almost all model under hyperon or boson condensate can be ruled out. Appearance of hyperon around the core in neutron star is supposed to be na\u00efve concept due to a chemical potential to be so larger than the mass of a \u039b hyperon, but our knowledge about hyperon interactions is still poor to understand Equation of State.<\/p>\n<p>For a quarter century, we investigated <span>\u039b<\/span><span>\u039b<\/span>\u00a0and \u039e<i>N<\/i> interaction with nuclear emulsion detector using K- beam at KEK-PS. We have detected 8 events showing the decay topology of light double-<span>\u039b<\/span> hypernucleus. Among them, the NAGARA event (<sub><span>\u039b<\/span><\/sub><sup>6<\/sup><sub><span>\u039b<\/span><\/sub>He) was uniquely identified and presented weakly attractive <span>\u039b<\/span><span>\u039b<\/span>\u00a0interaction with 0.67 +\/- 0.17 MeV. Very recently, we have succeeded to detect a deeply bound <span>\u039e<\/span><sup>&#8211;<\/sup>&#8211;<sup>14<\/sup>N system, which supports attractive <span>\u039e<\/span><sup>&#8211;<\/sup><i>N<\/i> interaction, under the development of &#8220;overall scanning&#8221; system.<\/p>\n<p>In the seminar, we will discuss current condition of theoretical and experimental efforts.<\/p>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[55],"acf":{"s_now_accepting":true,"s_date_order":"2015-04-22 17:00:00","s_date_end":null,"s_date_text":"","s_text":"Kazuma Nakazawa","s_place":"KMI Science Symposia (ES635)","s_place_other":"","s_categoryother":"","s_poster":"<form mt:asset-id=\"937\" class=\"mt-enclosure mt-enclosure-file\" style=\"display: inline;\"><a href=\"\/eng\/seminar\/files\/Colloquim_Nakazawa_20150422poster.pdf\">Colloquim_Nakazawa_20150422poster.pdf<\/a><\/form>","s_poster2":"<form mt:asset-id=\"938\" class=\"mt-enclosure mt-enclosure-image\" style=\"display: inline;\"><a href=\"\/eng\/seminar\/files\/images\/colloquium20150422.jpg\">colloquium20150422.jpg<\/a><\/form>","s_slide":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nuclear matter with hyperon in neutron star under nuclear physics with double strangeness - 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\/947\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nuclear matter with hyperon in neutron star under nuclear physics with double strangeness - KMI - Nagoya University\" \/>\n<meta property=\"og:description\" content=\"Mixing of hyperons was strongly suggested in neutron stars to support their masses (typically ~1.4 M\u25ce , where M\u25ce is a solar mass). Although three body forces with nucleon(N) and hyperon are introduced to support the recent observed massive neutron star with (1.97 +\/- 0.04)M\u25ce, some other theorists claim that almost all model under hyperon or boson condensate can be ruled out. Appearance of hyperon around the core in neutron star is supposed to be na\u00efve concept due to a &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/947\/\" \/>\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\/947\/\",\"url\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/947\/\",\"name\":\"Nuclear matter with hyperon in neutron star under nuclear physics with double strangeness - KMI - Nagoya University\",\"isPartOf\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/#website\"},\"datePublished\":\"2015-04-23T05:34:56+00:00\",\"dateModified\":\"2015-04-23T05:34:56+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/947\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/947\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/947\/#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\":\"Nuclear matter with hyperon in neutron star under nuclear physics with double strangeness\"}]},{\"@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":"Nuclear matter with hyperon in neutron star under nuclear physics with double strangeness - 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\/947\/","og_locale":"en_US","og_type":"article","og_title":"Nuclear matter with hyperon in neutron star under nuclear physics with double strangeness - KMI - Nagoya University","og_description":"Mixing of hyperons was strongly suggested in neutron stars to support their masses (typically ~1.4 M\u25ce , where M\u25ce is a solar mass). Although three body forces with nucleon(N) and hyperon are introduced to support the recent observed massive neutron star with (1.97 +\/- 0.04)M\u25ce, some other theorists claim that almost all model under hyperon or boson condensate can be ruled out. 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