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quark model of elementary particles

In this model, three of the four fundamental forces of physics are described, along with gauge bosons, the particles that mediate those forces. These quarks are the ones known as up (u), down (d), and strange (s). The Standard Model of particle physics, which classifies elementary particles into several groups, is at the core of modern physics. Fermions have half-integer spin while bosons have integer spin. The Standard Model includes the electromagnetic, strong and weak forces and all their carrier particles, and explains well how these forces act on all of the matter particles. It was postulated that there was an ’up’ quark with an electric charge equal to 2=3 of the proton and a ’down’ quark … Color charge is a property of quarks and gluons that is related to the particles' strong interactions in the theory of quantum chromodynamics (QCD).. Elementary Particle Physics Lecture 5 - Strange Particles and Calculation of Strangeness - Duration: 5:43. that had 100’s of elementary particles. Gell-Mann and Zweig required only three quarks to build the particles known in 1964. History quickly repeated itself. Since then, numerous particles have been discovered containing the charmed quark, consistent in every way with the quark model. The experiments also showed that the partons can indeed have fractional charges of + 2 / 3 e or − 1 / 3 e and thus confirmed one of the more surprising predictions of the quark model. The discovery of the J/ψ meson had such a rejuvenating effect on quark theory that it is now called the November Revolution. It was suggested that all these particles could be built from more fundamental con-stituents, known as quarks. It exists on many levels: from the simple, almost dynamics-free picture of strongly interacting particles as bound states of quarks and antiquarks, to more detailed descriptions of dynamics, either through models or directly from QCD itself. All the particles of the Standard Model have been experimentally observed, recently including the Higgs boson in 2012. The "color charge" of quarks and gluons is completely unrelated to the everyday meaning of color.The term color and the labels red, green, and blue became popular simply because of the loose analogy to the primary colors. called the quark model. Elementary particles are classified according to their spin. Ting and Richter shared the 1976 Nobel Prize. To begin with in the Standard Model there are fields for each kind of what's known to be elementary particles today, the quarks and leptons which are grouped into three families. पहल सब की पाठशाला 9,528 views 5:43

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