- #1
bilzebor
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- TL;DR Summary
- why is the isospin different then the other flavors
hello,
in the model of quarks, each of them is described by a flavor, but the quantum number for the first generation of quarks is the same (the isospin) for the up (1/2) and down (-1/2) quark.
For the other generation though it is a distinct number (s,charm,...) for each quark.
From what I understand, since the SU(2) symetry is only slightly broken for the up and down quark and for historical reason, people use the isospin for both, but they use different quantum numbers for the other quarks because then SU(3,4,...) is more broken.
Does than mean that technically we could use 2 different numbers for the up and down quark? or am I missing something?
thanks
in the model of quarks, each of them is described by a flavor, but the quantum number for the first generation of quarks is the same (the isospin) for the up (1/2) and down (-1/2) quark.
For the other generation though it is a distinct number (s,charm,...) for each quark.
From what I understand, since the SU(2) symetry is only slightly broken for the up and down quark and for historical reason, people use the isospin for both, but they use different quantum numbers for the other quarks because then SU(3,4,...) is more broken.
Does than mean that technically we could use 2 different numbers for the up and down quark? or am I missing something?
thanks