01736nam a2200217Ia 4500 TDMU_33460 210410s9999 xx 000 0 und d 305.8 H105 Han, M. Y Quarks and gluons a century of particle charges M.Y. Han Singapore World Scientific 1999 x, 158 p. Our journey in search of the origin of matter â€” and, by extension, the origin of the Universe itself â€” has taken us deeper and deeper inside atoms. First to come into view was the atomic nucleus, and still further downscale the individual protons and neutrons that constitute the nucleus. At least for three decades, nucleons (protons and neutrons) were considered to be our final destination. Then, peering into them, we detected shadows of yet another layer of matter that lurks inside. Unable so far to crack open a nucleon and bring out one of these shadowy objects for observation and measurement, we can only guess what they are. We have named them quarks. We believe that two types of quarks â€” one named â€œupâ€ and the other â€œdownâ€ â€” make up the proton and the neutron. Quarks are held together by a force dubbed the chromo force, represented by particles named gluons, which are just as unseen as quarks. So it is the quarks and gluons that lie at the bottom of all known matter Particles (Nuclear physics) History; Hạt (Vật lý hạt nhân) Lịch sử; Hạt vi lượng http://lrc.tdmu.edu.vn/opac/search/detail.asp?aID=2&ID=33460 Trung tâm Học liệu Trường Đại học Thủ Dầu Một