  We find that localized quantum N-body soliton states exist for a derivative
nonlinear Schrodinger (DNLS) model within an extended range of coupling
constant (\xi_q) given by 0 < | \xi_q | < 1/\hbar \tan [\pi/(N-1)]. We also
observe that soliton states with both positive and negative momentum can appear
for a fixed value of \xi_q. Thus the chirality property of classical DNLS
solitons is not preserved at the quantum level. Furthermore, it is found that
the solitons with positive (negative) chirality have positive (negative)
binding energy.
