Search for Z'→e+e- Using Dielectron Mass and Angular Distribution

We search for Z^' bosons in dielectron events produced in pp¯ collisions at s=1.96TeV, using 0.45fb^-1 of data accumulated with the Collider Detector at Fermilab II detector at the Fermilab Tevatron. To identify the Z^'→e⁺e^- signal, both the dielectron invariant mass distribution and the angular distribution of the electron pair are used. No evidence of a signal is found, and 95% confidence level lower limits are set on the Z^' mass for several models. Limits are also placed on the mass and gauge coupling of a generic Z^', as well as on the contact-interaction mass scales for different helicity structure scenarios.