Effective quark mass frome+e−→qq¯→hadrons

Abstract

A kinematic method is considered to estimate the quark mass from ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}q\overline{q}\ensuremath{\rightarrow}\mathrm{hadrons}$. It is based on a well-known linear relationship between the average meson multiplicity and the fireball mass, crucial tests being made with $\ensuremath{\pi}$ production by $\mathrm{pp}$ collisions and $\overline{p}p$ annihilations. Applied to the multiplicity data of ${e}^{+}{e}^{\ensuremath{-}}$ annihilation from ADONE, the method yields for the effective mass of the light quarks 0.33\ifmmode\pm\else\textpm\fi{}0.03 GeV.