{"id":21077,"date":"2021-04-21T16:23:15","date_gmt":"2021-04-21T16:23:15","guid":{"rendered":"https:\/\/www.upjs.sk\/prirodovedecka-fakulta\/pracoviska\/ufv\/24306-2\/"},"modified":"2022-10-26T10:35:02","modified_gmt":"2022-10-26T10:35:02","slug":"24306-2","status":"publish","type":"cpt_pracoviska","link":"https:\/\/www.upjs.sk\/prirodovedecka-fakulta\/pracoviska\/ustavy-pf\/ufv\/ufv-st\/24306-2\/","title":{"rendered":"Publik\u00e1cia v \u010dasopise Nature"},"content":{"rendered":"
Pracovn\u00edci n\u00e1\u0161ho \u00fastavu prispeli k vzniku novej publik\u00e1cie z experimentu ALICE na ur\u00fdch\u013eova\u010di LHC v CERNe v \u010dasopise Nature.<\/p>\n
Spolupr\u00e1cou s\u00a0CERN-om sa m\u00f4\u017ee pochv\u00e1li\u0165 len nieko\u013eko in\u0161tit\u00faci\u00ed na Slovensku. Univerzita P.J. \u0160af\u00e1rika sa hrd\u00ed t\u00fdm, \u017ee je partnerom CERN-u v\u00a0experimente ALICE u\u017e nieko\u013eko desa\u0165ro\u010d\u00ed. Skupina pracovn\u00edkov na \u00daFV PF UPJ\u0160 prispieva v\u00a0experimente do anal\u00fdzy \u010dast\u00edc obsahuj\u00facich\u00a0s<\/em>\u00a0kvark a\u00a0pre zber d\u00e1t v\u00a0rokoch 2015 a\u017e 2018 (d\u00e1ta analyzovan\u00e9 v spom\u00ednanom \u010dl\u00e1nku) bola zodpovedn\u00e1 za v\u00fdvoj softv\u00e9ru pre monitorovanie kvality d\u00e1t pre sp\u00fa\u0161\u0165ac\u00ed syst\u00e9m (tzv. Trigger).\u00a0\u00a0<\/p>\n Jadro at\u00f3mu sa sklad\u00e1 z\u00a0prot\u00f3nov a\u00a0neutr\u00f3nov (pozn\u00e1me ich pod n\u00e1zvom nukle\u00f3ny), ktor\u00e9 sa zase skladaj\u00fa z\u00a0naj\u013eah\u0161\u00edch kvarkov u <\/em>(up<\/em>)\u00a0a\u00a0d <\/em>(down<\/em>). Interakcia medzi nukle\u00f3nmi v\u00a0jadre at\u00f3mu je ve\u013emi dobre teoreticky pop\u00edsan\u00e1 aj v\u010faka tzv. rozptylov\u00fdm experimentom, v\u00a0ktor\u00fdch sa zr\u00e1\u017eaj\u00fa nukle\u00f3ny medzi sebou. Situ\u00e1cia sa komplikuje, ak by sme chceli pop\u00edsa\u0165 interakciu medzi \u010dasticami, ktor\u00e9 obsahuj\u00fa aj in\u00fd kvark ako u<\/em>\u00a0a\u00a0d<\/em>. Tak\u00e9to \u010dastice maj\u00fa toti\u017e ve\u013emi kr\u00e1tku dobu \u017eivota, a\u00a0preto nie s\u00fa vhodn\u00e9 na \u0161t\u00fadium v\u00a0rozptylov\u00fdch experimentoch. \u00a0<\/p>\n Experiment ALICE na Ve\u013ekom hadr\u00f3novom zr\u00e1\u017ea\u010di (LHC) v\u00a0CERN sk\u00fama interakciu medzi \u010dasticami obsahuj\u00facimi (hocijak\u00e9) kvarky pomocou tzv. hybnostn\u00fdch korel\u00e1ci\u00ed (podrobnej\u0161ie v\u00a0[1]). Unik\u00e1tny v\u00fdsledok experimentu ALICE publikovan\u00fd v\u00a0prest\u00ed\u017enom \u010dasopise Nature [2] uk\u00e1zal, \u017ee je mo\u017en\u00e9 napr. zmera\u0165 interakciu medzi prot\u00f3nom a\u00a0\u010dasticami obsahuj\u00facimi viac ako jeden s<\/em> (strange<\/em>) kvark.<\/p>\n [1]: Proton collisions probe the final frontier of the standard model of particle physics<\/a><\/p>\n<\/p>\n