Time evolution of the two-jet events $e^{+}-e^{-}\to hadrons$ in the Dynamical String Model

Abstract

The time dependent pion emission rate and the mean life time of the pion source in the center of mass frame of the two-jet events have been determined for $e^{+}-e^{-}\to hadrons$ at $\sqrt{s}=20-50$ GeV by the Dynamical String Model. It was established that the time needed for the creation of the pion source is $5$ fm/c, whereas its life time is ${\tau }_0\approx 7-13$ fm/c for energies $\sqrt{s}=20-50$ GeV, respectively.

Comments: 5 pages in LaTex format, 11 Postscript figures available by e-mailing to bela@dtp.atomki.hu