{"id":12344,"date":"2014-12-01T00:52:43","date_gmt":"2014-11-30T22:52:43","guid":{"rendered":"http:\/\/109.232.216.219\/~bilimvegelecek\/?p=12344"},"modified":"2018-04-19T15:44:38","modified_gmt":"2018-04-19T12:44:38","slug":"lhc-iki-yeni-parcacik-gozlemledi-2","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2014\/12\/01\/lhc-iki-yeni-parcacik-gozlemledi-2","title":{"rendered":"LHC iki yeni par\u00e7ac\u0131k g\u00f6zlemledi"},"content":{"rendered":"

2012\u2019de Higgs bozonunun g\u00f6zlendi\u011fi LHC\u2019de (B\u00fcy\u00fck Hadron \u00c7arp\u0131\u015ft\u0131r\u0131c\u0131s\u0131), LHCb (LHC beauty) deneyleri kapsam\u0131nda, 2011 ve 2012 verileri incelenerek baryon ailesinden iki yeni par\u00e7ac\u0131k daha ke\u015ffedildi ve bulgular yay\u0131mland\u0131.(1)<\/sup><\/p>\n

LHC, par\u00e7ac\u0131k at\u0131mlar\u0131n\u0131n \u0131\u015f\u0131k h\u0131z\u0131na \u00e7ok yak\u0131n h\u0131zlarda kafa kafaya \u00e7arp\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131 D\u00fcnya\u2019n\u0131n en b\u00fcy\u00fck par\u00e7ac\u0131k h\u0131zland\u0131r\u0131c\u0131s\u0131. \u00c7arp\u0131\u015fma b\u00f6lgesinde G\u00fcne\u015f\u2019in merkezinden 100.000 kat daha y\u00fcksek bir s\u0131cakl\u0131k olu\u015fur ve \u00e7arp\u0131\u015fan par\u00e7ac\u0131klar bu denli y\u00fcksek s\u0131cakl\u0131kta temel par\u00e7ac\u0131klar\u0131na ayr\u0131larak \u201catomalt\u0131 \u00e7orba\u201d denilen yap\u0131y\u0131 olu\u015fturur. Atomalt\u0131 \u00e7orba i\u00e7erisinde y\u00fczmekte olan temel par\u00e7ac\u0131klar, saniyenin k\u00fc\u00e7\u00fck kesirlerinde birle\u015ferek daha \u00f6nce g\u00f6zlemlenmemi\u015f \u201cyeni\u201d par\u00e7ac\u0131klar olu\u015fturabilir. Kuark modelinin \u00f6ng\u00f6rd\u00fc\u011f\u00fc, fakat \u015fimdiye dek yakalanamam\u0131\u015f baryon ailesinden Xi_b’- ve Xi_b*- par\u00e7ac\u0131klar\u0131 da bu metotla olu\u015fturuldu ve hassas dedekt\u00f6rler arac\u0131l\u0131\u011f\u0131yla detayl\u0131 incelemeler neticesinde tespit edildi.<\/p>\n

Baryonlar, \u00fc\u00e7 kuark\u0131n g\u00fc\u00e7l\u00fc etkile\u015fimlerle ba\u011fland\u0131\u011f\u0131 a\u011f\u0131r par\u00e7ac\u0131k ailesidir. Proton ve n\u00f6tronun da dahil oldu\u011fu aileye yeni giren Xi_b’- ve Xi_b*- par\u00e7ac\u0131klar\u0131 da bir alt (beauty-bottom) kuark; bir acayip (strange) kuark ve bir a\u015fa\u011f\u0131 (down) kuark olmak \u00fczere \u00fc\u00e7 kuarktan meydana gelmi\u015ftir. Alt kuark\u0131n k\u00fctlesinden dolay\u0131 protondan 6 kat daha a\u011f\u0131r olan bu par\u00e7ac\u0131klar\u0131 birbirinden ay\u0131ran \u00f6zellik ise spinlerinin y\u00f6nelimleridir. Xi_b’- durumunda, alt kuark di\u011fer iki kuark ile z\u0131t y\u00f6nelimli spinlere sahipken Xi_b*- durumunda ise spin y\u00f6nelimleri ayn\u0131d\u0131r.<\/p>\n

Par\u00e7ac\u0131klar\u0131n k\u00fctlelerini, olu\u015fum oranlar\u0131n\u0131, bozunum s\u00fcrelerini ve mekanizmalar\u0131n\u0131 titizlikle inceleyen ara\u015ft\u0131rma ekibi, bulgular\u0131n g\u00fc\u00e7l\u00fc etkile\u015fimlerin teorisi \u201ckuantum kromodinamik (QCD)\u201d ile uyumlu oldu\u011funa kanaat getirdi. Standart Model\u2019in (SM) bir par\u00e7as\u0131 olan ve kuarklar ile gluonlar aras\u0131ndaki etkile\u015fimleri inceleyen QCD\u2019nin bu denli y\u00fcksek hassasiyetlerle test edilmesi kuark dinami\u011finin anla\u015f\u0131lmas\u0131 a\u00e7\u0131s\u0131ndan olduk\u00e7a \u00f6nemli. \u201cE\u011fer Standart Model \u00f6tesinde bir fizik bulmak istiyorsak \u00f6nce Standart Model\u2019in net bir resmini olu\u015fturmal\u0131y\u0131z\u201d diyen LHCb fizik koordinat\u00f6r\u00fc Patrick Koppenburg, bu t\u00fcrden y\u00fcksek hassasiyetli \u00e7al\u0131\u015fmalar\u0131n SM ve gelecekte kar\u015f\u0131la\u015f\u0131labilecek SM \u00f6tesi fizi\u011fin ayr\u0131m\u0131na yard\u0131mc\u0131 olaca\u011f\u0131n\u0131 belirtti.<\/p>\n

2015 ilkbahar\u0131nda daha y\u00fcksek enerjiler ve daha yo\u011fun par\u00e7ac\u0131k at\u0131mlar\u0131yla \u00e7al\u0131\u015fmaya haz\u0131rlanan LHC, par\u00e7ac\u0131k fizi\u011fi i\u00e7in uzun bir s\u00fcre daha b\u00fcy\u00fck katk\u0131lar sa\u011flayacak gibi g\u00f6z\u00fck\u00fcyor.(3-4)<\/sup>\u00a0<\/strong><\/p>\n

Dipnotlar:<\/strong><\/p>\n

1) http:\/\/arxiv.org\/pdf\/1411.4849v1.pdf<\/p>\n

2) http:\/\/home.web.cern.ch\/topics\/large-hadron-collider<\/p>\n

3) http:\/\/home.web.cern.ch\/about\/updates\/2014\/11\/lhcb-observes-two-new-baryon-particles<\/p>\n

4)\u00a0http:\/\/www.theatlantic.com\/technology\/archive\/2014\/11\/CERN-large-hadron-collider-finds-two-new-subatomic-particles-called-baryons\/382968\/<\/p>\n","protected":false},"excerpt":{"rendered":"

2012\u2019de Higgs bozonunun g\u00f6zlendi\u011fi LHC\u2019de (B\u00fcy\u00fck Hadron \u00c7arp\u0131\u015ft\u0131r\u0131c\u0131s\u0131), LHCb (LHC beauty) deneyleri kapsam\u0131nda, 2011 ve 2012 verileri incelenerek baryon ailesinden iki yeni par\u00e7ac\u0131k daha ke\u015ffedildi ve bulgular yay\u0131mland\u0131.(1) LHC, par\u00e7ac\u0131k at\u0131mlar\u0131n\u0131n \u0131\u015f\u0131k h\u0131z\u0131na \u00e7ok yak\u0131n h\u0131zlarda kafa kafaya \u00e7arp\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131 D\u00fcnya\u2019n\u0131n en b\u00fcy\u00fck par\u00e7ac\u0131k h\u0131zland\u0131r\u0131c\u0131s\u0131. \u00c7arp\u0131\u015fma b\u00f6lgesinde G\u00fcne\u015f\u2019in merkezinden 100.000 kat daha y\u00fcksek bir s\u0131cakl\u0131k olu\u015fur […]<\/p>\n","protected":false},"author":634,"featured_media":23732,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[167,19,26],"tags":[265,2535,936,356],"class_list":["post-12344","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-130-sayi","category-bilim-gundemi","category-fizik","tag-cern","tag-hadron-carpistiricisi","tag-higgs","tag-parcacik-fizigi"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/12344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/users\/634"}],"replies":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/comments?post=12344"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/12344\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media\/23732"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=12344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=12344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=12344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}