isotopic spin


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isotopic spin

n.
An isospin.

isotopic spin

n
(General Physics) See isospin

i′sotop′ic spin′


n.
a quantum number that is related to the number of different values of electric charge that a given kind of baryon or meson may have. Symbol: I Also called isospin.
[1935–40]
References in periodicals archive ?
In the middle volume of a three-volume set of textbooks for a series of courses that replaced the traditional course of theoretical physics, Maiani illustrates the conceptual route that led to the unification of the weak and electromagnetic interactions, starting from the identification of the weak hadronic current with the isotopic spin current; through the conserved vector current hypothesis of Fenman, Gell-Mann, and others; to Yang-Mills theory and to the first electroweak theory of Glashow.
Adelberger and his co-workers at the University of Washington in Seattle suggested that a disagreement between their experimental results and those obtained by Peter Thieberger of Brookhaven National Laboratory in Upton, N.Y., could be viewed as compatible only if the source of the force were instead isotopic spin -- the number of neutrons minus the number of protons.
He was attempting to understand the rule that forbids the strong forces from inducing the decay of strange particles by looking at a quantity called isotopic spin (I).