Study Of Vector Boson Plus D 2010 Meson Production In Bar P P Collisions At Sqrt S

Study of Vector Boson Plus $D^{*}(2010)^+$ Meson Production in $\bar{p}p$ Collisions at $\sqrt{s}

Our study of vector boson (V) production in conjunction with a D*(2010)+ meson is presented. Using a data sample correponding to 9.7 fb-1 p of proton-antiproton collisions at center-of-mass energy [arrow]" = 1:96 TeV produced by the Fermilab Tevatron, we reconstruct V +D*+ samples with the CDF II detector. The D*+ is fully reconstructed in the D*(2010)+ 2!D0(2!K- [pi]+)[pi]+ decay mode. This technique is sensitive to the associated production of vector boson plus charm or bottom mesons. We measure the ratio of production cross sections [sigma](W +D*)/ [sigma](W) = [1.75"0.13(stat)"0:09(syst)]% and [sigma](Z +D*)/ [sigma](Z) = [1:5"0:4(stat)_0:2(syst)]%. Event properties are utilized to determine the fraction of V +D*(2010)+ events originating from different production processes. Our results are in agreement with the predictions obtained with the pythia program, limiting possible contribution from non-standard-model physics processes.

Study of Low $p_{T}$ $D{̂0}$ Meson Production at CDF II in $p\bar{p}$ Collisions at $\sqrt{s}$

W Boson Production in /bar P/p Collisions At. Sqrt. S

The cross section for the production and subsequent decay of the W Intermediate Vector boson to electron and neutrino has been measured in .sqrt.s = 1.8 TeV /bar p/p collisions using the CDF Collider Detector at Fermilab. For this measurement, W events were identified from the large missing transverse energy associated with the unseen neutrino and an electromagnetic cluster passing rather loose electron criteria. 22 events passing the selection missing transverse energy greater than 25 GeV and electron transverse energy greater than 15 GeV were observed in a sample of 25nb/sup /minus/1/ yielding a sigma /center dot/ B = 2.6 ± 0.6 ± 0.5nb. This report agrees well with a parallel analysis based primarily on the identification of isolated electron and is in excellent agreement with theoretical predictions. 12 refs., 7 figs.