Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-11-02
Phys.Rev. D69 (2004) 057501
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, 1 figure
Scientific paper
10.1103/PhysRevD.69.057501
We analyze the Sivers asymmetry in light-cone gauge. The average transverse momentum of the quark distribution is related to the correlation between the quark distribution and the transverse component of the gauge field at $x^-\pm \infty$. We then use finiteness conditions for the light-cone Hamiltonian to relate the transverse gauge field at $x^-=\pm \infty$ to the color density integrated over $x^-$. This result allows us to relate the average transverse momentum of the active quark to color charge correlations in the transverse plane.
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