Nonzero transversity distribution of the pion in a quark-spectator-antiquark model
Nonzero transversity distribution of the pion in a quark-spectator-antiquark model
We calculate the nonzero (na\"{\i}ve) T-odd transverse momentum dependent transversity distribution ${h}_{1}^{\ensuremath{\perp}}(x,{\mathbf{k}}_{\ensuremath{\perp}}^{2})$ of the pion in a quark-spectator-antiquark model. The final-state interaction is modeled by the approximation of one gluon exchange between the quark and the antiquark spectator. Using our model result we estimate the unsuppressed $\mathrm{cos}2\ensuremath{\phi}$ azimuthal asymmetry in …