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Alvaro De Rújula

Print publication date: 2018

Print ISBN-13: 9780198817802

Published to Oxford Scholarship Online: February 2020

DOI: 10.1093/oso/9780198817802.001.0001

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Parallel Realms

Parallel Realms

12 (p.64) Parallel Realms
Enjoy Our Universe

Alvaro De Rújula

Oxford University Press

Electrons, their “brothers” neutrinos, and the quarks we are made of are a family. For each of these particles there exists two “copies” in Nature, two extra families. The first novel character in this clan, the “muon” (a cousin of the electron) had “not been ordered” by anyone. Nor had the first extra “strange” quark been ordered. Subsequently, the plot became much more interesting. The “November Revolution” subchapter recounts the theoretical prediction and discovery of the “charmed” quark. The third family was also “needed” (within what was to become the Standard Model of particle physics).

Keywords:   muon, three neutrinos, strange quark, charmed quark, top quark, charmonium, quark flavor

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