Abstract
Nowadays we are accustomed to think of particle interactions in terms of elementary couplings of quarks and leptons. In table 1 we list major steps which have contributed to our present picture. Entries in square brackets refer to theoretical speculations; round bracketed entries are observed phenomena which demonstrate the dynamical reality of quarks, complementing their algebraic reality which emerged from an analysis of the hadron spectrum. In this course we will be mainly concerned with the weak couplings of quarks and leptons.
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Gaillard, M.K., Maiani, L. (1980). New Quarks and Leptons. In: Lévy, M., Basdevant, JL., Speiser, D., Weyers, J., Gastmans, R., Jacob, M. (eds) Quarks and Leptons. NATO Advanced Study Institutes Series, vol 61. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7197-7_9
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DOI: https://doi.org/10.1007/978-1-4684-7197-7_9
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