Assertion: proton's quark | /r/HasAspect | spin
Facets:
value: on average anti-aligned
type: OTHER
value: in the valence quark model
type: OTHER
Source sentences:
text: As you are looking for the spin of the total nucleon, it must come from the spin properties of each quark, because each quark has spin," explains Zein-Eddine Meziani.
text: In leading-order pQCD, the quark (either the up or the down quark) which carries a majority of the nucleon's energy should have its spin aligned parallel to the nucleon spin, while in the valence quark model, the down quark carrying most of the nucleon's energy has its spin on average anti-aligned to the nucleon spin.