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UP QUARK [1 record]

Record 1 1996-01-08

English

Subject field(s)
  • Atomic Physics
DEF

A quark with an electric charge of +2/3, baryon number of 1/3, and O strangeness and charm. Symbolized u.

CONT

A proton consists of two up quarks (each of which has a fractional charge of +2/3) and a down quark (whose charge is -1/3).

CONT

The lightest quarks are the "up" quark, the "down" quark, and the strange quark....

CONT

... each proton is made of two u quarks and one d quark....

French

Domaine(s)
  • Physique atomique
CONT

Il faut évidemment supposer que A=1/3 pour chacun des quarks u, d, s. D'autre part, les charges doivent aussi être fractionnaires.

Spanish

Campo(s) temático(s)
  • Física atómica
CONT

El electrón es el leptón cargado más ligero y se asocia, por tanto, con los quarks más ligeros, el quark u (o quark arriba) y el quark d (o quark abajo).

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