Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-01-12
RIKEN Rev.28:110-113,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 latex pages, Invited talk presented at Circum-Pan-Pacific RIKEN Symposium on High Energy Spin Physics, RIKEN, Wako, Japan, N
Scientific paper
It is shown that the proton "spin crisis'' or "spin puzzle" can be understood by the relativistic effect of quark transversal motions due to the Melosh-Wigner rotation. The quark helicity $\Delta q$ measured in polarized deep inelastic scattering is actually the quark spin in the infinite momentum frame or in the light-cone formalism, and it is different from the quark spin in the nucleon rest frame or in the quark model. The flavor asymmetry of the Melosh-Wigner effect for the valence $u$ and $d$ quarks and the intrinsic sea $q \bar{q}$ pairs are also the important ingredients in a SU(6) quark-spectator-diquark model framework to understand the "spin puzzle". Such a picture of the spin structure can be tested by use of several simple relations to measure the quark spin distributions in the quark model.
No associations
LandOfFree
The Spin Structure of the Proton does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Spin Structure of the Proton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Spin Structure of the Proton will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-686441