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We present a measurement of the mass dependence of the forward-backwardcharge asymmetry (A_{FB}) for electron-positron pairs produced via anintermediate Z/gamma with mass Mee > 40 GeV/c**(2). We study the constraints onthe Z-quark couplings imposed by our measurement. We analyze an integratedluminosity of 72 pb-1 collected by the CDF II detector in proton anti-protoncollisions at s**(1/2) = 1.96 TeV at the Fermilab Tevatron. A comparison of theuncorrected A_{FB} between data and Standard Model Monte Carlo gives goodagreement with a chi^2/DOF of 15.7/15. The couplings measurements are alsoconsistent with Standard Model predictions.Comment: LaTeX2e file 30 pages 27 figures (35 eps files) Submitted to  Phys.Rev.

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

Measurement of the forward-backward charge asymmetry of electron-positron pairs in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo stretchy="true">¯</mml:mo></mml:mover><mml:mi>p</mml:mi></mml:math>collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi …

Measurement of the forward-backward charge asymmetry of electron-positron pairs inp¯pcollisions ats=1.96