  We investigate the nucleon tensor charge from current experiments by a
combined analysis of the Collins asymmetries in two hadron production in
$e^+e^-$ annihilations and semi-inclusive hadron production in deep inelastic
scattering processes. The transverse momentum dependent evolution is taken into
account, for the first time, in the global fit of the Collins fragmentation
functions and the quark transversity distributions at the approximate
next-to-leading logarithmic order. We obtain the nucleon tensor charge
contribution from up and down quarks as $\delta u=+0.30^{+0.12}_{-0.08}$ and
$\delta d=-0.20_{-0.11}^{+0.28}$ at 90\% confidence level for momentum fraction
$0.0065 \le x_B \le 0.35$ and $Q^2=$ 10 GeV$^2$.
