We report on a CDF measurement of the total cross section and
rapi+dity distribution, d sigma/dy, for qqbar --> gamma*/Z -->
e+e- events in the Z boson mass region (66 < M_ee < 116 GeV/c2)
produced in p anti-p collisions at s**(1/2) ñ.96 TeV with 2.1 fb-1 of
integrated luminosity. The measured cross section of 256 +/- 16 pb
and d sigma/dy distribution are compared with Next-to-Leading-Order and
Next-to-Next-to-Leading Order QCD theory predictions with CTEQ and MRST
parton distribution functions (PDFs). There is good agreement between
data and theory except at large rapi+dity for which further tuning of
PDF models may be needed.
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Updated: Thursday, 2009 August 27 14:51:03 CDT automatically from input from carol picciolo