Quark ＆ Gluons

    Oor journey in searck of the origin of matter-and by extension the origin of the Universe itself-has taken us deeper and deeper inside atoms.First to come into view was the atomic the nucleus.At least for three decades nucleons 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 tow types of quarks-one named“up”and the other“down”-make up the proton and the meuron.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!
作者简介：Dr.Mo Young Han is a Professor of Physics at Duke University,where he has been since 1967.His research specialty is in the field of theoretical particle physicsespecially the symmetry principles of elementary particle physics.
He is credited with introducing the SUsymmetry for quarks later called the colors symmetry of the Standard Model He is the author of several books,including The Secret Life of Quanta and The Probable Universe

Prologue:A Century of Particle Charges
1.The Electron:The Quantum of Electricity
2.Mass:E=mc2and All That
3.The Photon:No Charge,No Rolls
4.The Spin:If It's Round,It Rolls
5.Antimatter:A Mirror Image
6.The Nucleus:A Whole New Ball Game
7.The Weak Force:A wHISPER in the Night
8.The Strong Force II:Hadrons
9.The Strong Force II:Hadrons
10.The Quark:The Queen of Fractions
11.The Origin of Quarks and Gluons
Epilogue:More Quarks,More Leptons and More Charges
Appendix 1:Annotated Chronology
Appendix 2:Powers of Ten
Appendix 3:The Nobel Prizes in Physics