{"id":19970,"date":"2015-01-05T00:16:58","date_gmt":"2015-01-04T16:16:58","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=19970"},"modified":"2018-08-01T14:40:05","modified_gmt":"2018-08-01T06:40:05","slug":"%e3%80%90%e7%89%a9%e7%90%86%e6%96%b0%e7%9f%a5%e3%80%91lhc%e7%99%bc%e7%8f%be%e5%85%a9%e5%80%8b%e8%b3%aa%e5%ad%90%e7%9a%84%e5%a4%a7%e5%80%8b%e5%ad%90%e8%a1%a8%e8%a6%aa","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=19970","title":{"rendered":"\u3010\u7269\u7406\u65b0\u77e5\u3011LHC\u767c\u73fe\u5169\u500b\u8cea\u5b50\u7684\u5927\u500b\u5b50\u8868\u89aa"},"content":{"rendered":"

\u25a0\u745e\u58ebLHC\u52a0\u901f\u5668\u4e2d\u7684LHCb\u5be6\u9a57\u767c\u8868\u4e86\u6700\u65b0\u7684\u5be6\u9a57\u7d50\u679c\uff0c\u767c\u73fe\u5169\u500b\u65b0\u91cd\u5b50\uff0c\u5206\u5225\u662f Xi_b'-\u53caXi_b*-\u3002<\/strong><\/span><\/p>\n

\"Welcome
Welcome to the LHCb experiment\u3002\u5716\u7247\u4f86\u6e90\uff1ahttp:\/\/lhcb-public.web.cern.ch\/lhcb-public\/Welcome.html<\/figcaption><\/figure>\n

\u64b0\u6587\uff5c<\/strong>\u9673\u52c1\u8c6a<\/p>\n

\u5728\u7c92\u5b50\u7269\u7406\u7684\u6a19\u6e96\u6a21\u578b\u4e2d\uff0c\u7531\u4e09\u500b\u5938\u514b\u6240\u7d44\u6210\u7684\u7c92\u5b50\u7a31\u70ba\u91cd\u5b50(bayron)\u3002\u6211\u5011\u65e5\u5e38\u751f\u6d3b\u4e2d\u7d44\u6210\u6240\u6709\u7269\u8cea\u7684\u8cea\u5b50\u8ddf\u4e2d\u5b50\u4fbf\u5c6c\u65bc\u91cd\u5b50\uff1a\u8cea\u5b50\u5e36\u6709\u5169\u500b\u4e0a\u5938\u514b\u8ddf\u4e00\u500b\u4e0b\u5938\u514b(uud)\uff0c\u800c\u4e2d\u5b50\u5e36\u6709\u4e00\u500b\u4e0a\u5938\u514b\u8ddf\u5169\u500b\u4e0b\u5938\u514b(udd)\u3002<\/p>\n

LHCb\u662f\u4f4d\u65bc\u5927\u578b\u5f37\u5b50\u5c0d\u649e\u6a5f(LHC)\u7684\u56db\u500b\u5927\u578b\u5be6\u9a57\u4e4b\u4e00\u3002\u548cATLAS\u8ddfCMS\u5169\u500b\u5927\u578b\u901a\u7528\u5be6\u9a57\u4e0d\u540c\uff0cLHCb\u4e3b\u8981\u7814\u7a76\u7684\u662f\u5e95\u5938\u514b(bottom quark)\u76f8\u95dc\u7684\u7269\u7406\u73fe\u8c61\u3002\u9019\u6b21LHCb\u6240\u767c\u73fe\u7684\u5169\u500b\u65b0\u91cd\u5b50\u662f\u7531\u76f8\u540c\u7684\u5938\u514b\u6240\u7d44\u6210\uff0c\u5206\u5225\u662f\u4e00\u500b\u5e95\u5938\u514b(b)\uff0c\u5947\u5938\u514b(s)\u53ca\u4e00\u500b\u4e0b\u5938\u514b(d)\u6240\u7d44\u6210\u3002\u7531\u65bc\u5e95\u5938\u514b\u7684\u8cea\u91cf\u76f8\u7576\u5927\uff0c\u56e0\u6b64\u9019\u5169\u500b\u91cd\u5b50\u7684\u8cea\u91cf\u7d04\u7565\u90fd\u662f\u8cea\u5b50\u7684\u516d\u500d\u3002\u9019\u5169\u500b\u65b0\u91cd\u5b50\u552f\u4e00\u4e0d\u540c\u7684\u5730\u65b9\u5728\u65bc\u6240\u5e36\u7684\u81ea\u65cb\u6578\u3002Xi_b'-\u4e2d\u7684\u4e0b\u5938\u514b\u8ddf\u5947\u5938\u514b\u5e36\u6709\u76f8\u540c\u7684\u81ea\u65cb\uff0c\u4e26\u8207\u5e95\u5938\u514b\u6240\u5e36\u7684\u81ea\u65cb\u76f8\u53cd\uff0c\u6240\u4ee5\u81ea\u65cb\u6578\u70ba1\/2\uff0c\u800cXi_b*-\u5247\u662f\u4e09\u500b\u5938\u514b\u90fd\u5e36\u6709\u76f8\u540c\u7684\u81ea\u65cb\uff0c\u56e0\u6b64\u81ea\u65cb\u6578\u70ba3\/2\u3002\u9019\u500b\u5fae\u5c0f\u7684\u5dee\u5225\u4e5f\u9020\u6210\u4e86\u5169\u500b\u91cd\u5b50\u7684\u8cea\u91cf\u5dee\u7570\uff1aXi_b'-\u7565\u91cd\u4e00\u4e9b\u3002LHCb\u7684\u7814\u7a76\u4eba\u54e1\u4ed4\u7d30\u6e2c\u91cf\u4e86\u9019\u5169\u500b\u65b0\u91cd\u5b50\u7684\u8cea\u91cf\uff0c\u76f8\u5c0d\u7522\u751f\u7387\uff0c\u53ca\u4e00\u4e9b\u76f8\u95dc\u6027\u8cea\uff0c\u7d50\u679c\u90fd\u8207\u6a19\u6e96\u6a21\u578b\u7684\u9810\u6e2c\u76f8\u543b\u5408\u3002<\/p>\n

\u7c92\u5b50\u7269\u7406\u7684\u6a19\u6e96\u6a21\u578b\u53ef\u4ee5\u7528\u4f86\u63cf\u8ff0\u5938\u514b\u4e4b\u9593\u7684\u76f8\u4e92\u4f5c\u7528\u3002\u900f\u904e\u5c0d\u5404\u7a2e\u65b0\u7c92\u5b50\u7684\u4ed4\u7d30\u6e2c\u91cf(\u4f8b\u5982\u9019\u6b21\u767c\u73fe\u7684\u5169\u500b\u65b0\u91cd\u5b50)\uff0c\u7269\u7406\u5b78\u5bb6\u53ef\u4ee5\u66f4\u6df1\u5165\u7684\u4e86\u89e3\u5938\u514b\u4e4b\u9593\u7684\u76f8\u4e92\u4f5c\u7528\u65b9\u5f0f\uff0c\u70ba\u767c\u73fe\u65b0\u7269\u7406\u73fe\u8c61\u5960\u5b9a\u57fa\u790e\u3002<\/p>\n

\u9019\u6b21\u7684\u7d50\u679c\u662f\u5229\u7528LHCb\u57282011-2012\u5e74\u6240\u53d6\u5f97\u7684\u6578\u64da\u6240\u5206\u6790\u800c\u5f97\u3002\u57282013-2014\uff0cLHC\u9032\u884c\u505c\u5de5\u6574\u4fee\uff0c\u9810\u8a082015\u5e74\u6062\u5fa9\u904b\u8f49\uff0c\u4e26\u5c07\u8cea\u5b50\u5c0d\u649e\u80fd\u91cf\u75312012\u76848 TeV\u63d0\u6607\u81f313 TeV\u3002<\/p>\n

\u539f\u59cb\u8ad6\u6587<\/strong>
\nObservation of two new Xi_b^- baryon resonances
\narXiv:1411.4849
\nLHCb Collaboration<\/p>\n

\u53c3\u8003\u8cc7\u6599\uff1a<\/strong>
\nCERN Press Release, 2014\/11\/19: LHCb observes two new baryon particles<\/a>
\n--<\/strong><\/span>
\n \u4f5c\u8005\uff1a\u9673\u52c1\u8c6a\u3000\u79d1\u6559\u4e2d\u5fc3\u7279\u7d04\u5beb\u624b\uff0c\u5f9e\u4e8b\u79d1\u666e\u6587\u7ae0\u5beb\u4f5c\u30022011\u5e74\u65bc\u7f8e\u570b\u7d10\u7d04\u5dde\u7acb\u77f3\u6eaa\u5927\u5b78(SUNY at Stony Brook)\u53d6\u5f97\u535a\u58eb\u5b78\u4f4d\uff0c\u7814\u7a76\u4e3b\u984c\u70ba\u76f8\u5c0d\u8ad6\u6027\u91cd\u96e2\u5b50\u78b0\u649e(Relativistic Heavy Ion Collision)\u3002\u9577\u671f\u64d4\u4efb\u4e2d\u6587\u79d1\u5b78\u65b0\u805e\u7db2\u7ad9\u300c\u79d1\u666f\u300d\uff08Sciscape.org\uff09\u7e3d\u7de8\u8f2f\u3002<\/strong><\/span><\/p>\n

 <\/p>\n

\"\u52a0\u5165\u597d\u53cb\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\u25a0\u745e\u58ebLHC\u52a0\u901f\u5668\u4e2d\u7684LHCb\u5be6\u9a57\u767c\u8868\u4e86<\/p>\n","protected":false},"author":20,"featured_media":19986,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3293,39],"tags":[1574,1578,1576,1435,1577,1575,1535],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/12\/lhcb_collaboration.jpg","_links":{"self":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/19970"}],"collection":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19970"}],"version-history":[{"count":14,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/19970\/revisions"}],"predecessor-version":[{"id":32149,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/19970\/revisions\/32149"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/media\/19986"}],"wp:attachment":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}