Study of Spin–Spin Correlations between Quark and a Spin- 12 Composite System

الملخص EN

We study the correlation between the fermion composite system and quark spins by using the light-cone quark–diquark model.

We do the calculations for u-quark and d-quark in the fermion system by considering different polarization configurations of both.

The contribution from scalar and axial-vector diquarks is taken into account.

The overlap representation of light-front wavefunctions is used for the calculations.

The spin–spin correlations for u and d quarks are presented in transverse impact-parameter plane and transverse momentum plane as well.