Kalli nassin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar nassin: Passage: Masana kimiyyar Murray Gell-Mann da George Zweig sun ba da shawarar samfurin quark da kansa a cikin 1964. Shawara ta zo ne jim kaɗan bayan da Gell-Mann ya tsara tsarin rarraba barbashi a cikin 1961 wanda aka sani da Hanyar Hudu<unk> ko, a cikin karin fasahohi, SU ((3) dandano na dandano, inganta tsarinsa. Masanin kimiyyar Yuval Ne'eman ya ci gaba da tsarin da ya yi kama da Hanyar Hudu a cikin wannan shekarar. An yi ƙoƙari na farko a ƙungiyar ƙungiya a cikin samfurin Sakata. Tambaya: Yaushe aka gabatar da samfurin kimiyya?
Shekara ta 1964