m_t distributions at midrapidity for pi0,pi+,pi- from UrQMD - no detector effect, "min. bias".
Figures show the distributions and fits by one slope for pi+,pi-,pi0, and in the last plot comparison of
pi+_ with pi0. The points errors are statistical, note high chi2. Fit by 2 slopes changes the chi2 only about twice.
-- PavelTlusty - 19 Nov 2008