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View Full Version : charge, spin, mass etc... this could be a dumb question but....



plant
2017-Jun-01, 12:21 PM
is it true that particles can have :

one of only 3 possible charges: -,0,+
one of only 5 possible spins: -1,-1/2,0,1/2,1


but why does each particle have it's own specific mass? why doesn't mass come in chunks like the above?

trinitree88
2017-Jun-02, 02:36 AM
is it true that particles can have :

one of only 3 possible charges: -,0,+
one of only 5 possible spins: -1,-1/2,0,1/2,1


but why does each particle have it's own specific mass? why doesn't mass come in chunks like the above?
Quarks, which make up mesons and baryons, have fractional charges of 1/3, 2/3, minus 1/3, minus 2/3.

Cougar
2017-Jun-02, 11:51 AM
one of only 5 possible spins: -1,-1/2,0,1/2,1

Gravitons should have spin 2. That's why people got excited with string theory when a spin 2 particle 'popped out' of the equations....

ShinAce
2017-Jun-02, 01:39 PM
The true fundamental relation is that charge can only change(or redistribute) by +/-1. While fractional charges likely exist, they are not free charges.

And we only see spin change by +/-1. Spin is mediated by photons, W, and Z bosons, all of which have spin 1.