Exotic hadrons, ko physics, na ci gaba da mamakin
Masana kimiyya na CERN sun tabbatar da cewa gwaje-gwaje a babban Hadron Collider, mai suna Large Hadron Beauty Collider (LHCb), sun gano sabbin barbashi da aka sani da "exotic hadrons". Sunan su ya samo asali ne daga gaskiyar cewa ba za a iya cire su daga tsarin quark na gargajiya ba.
Hadrons barbashi ne da ke da hannu a cikin hulɗa mai ƙarfi, kamar waɗanda ke da alhakin haɗin gwiwa a cikin tsakiya na atomic. Bisa ga ka'idodin tun daga 60s, sun ƙunshi quarks da antiquarks - mesons, ko na uku quarks - baryon. Koyaya, ɓangarorin da aka samu a cikin LHCb, mai alamar Z (4430), bai dace da ka'idar quark ba, tunda yana iya ƙunshi quarks huɗu.
An gano alamun farko na ƙwayar ƙwayar cuta a cikin 2008. Koyaya, kwanan nan ya yuwu a tabbatar da cewa Z(4430) wani barbashi ne mai nauyin 4430 meV/c2, wanda shine kusan sau hudu na adadin proton (938 meV/c2). Masana kimiyya har yanzu ba su ba da shawarar abin da wanzuwar hadrons ke iya nufi ba.
