Further Evidence for Fractional Charge of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mfrac><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:mfrac><mml:mi>e</mml:mi></mml:math>on Matter

Abstract

We report further evidence for fractional charge of $\ensuremath{\sim}\frac{1}{3}e$ on niobium spheres. With a modified apparatus in which we can determine all of the background dipole forces we have measured fractional charges of $(0.304\ifmmode\pm\else\textpm\fi{}0.040)e$ and $(0.345\ifmmode\pm\else\textpm\fi{}0.035)e$.