CDF Logo Search for a New Charged Heavy Vector Boson, W' decaying to an electron-neutrino pair Exotics Logo

We present results on a seach for a heavy charged vector boson, W', decaying to an electron-neutrino pair using a Run 2 data corresponding to an integrated luminosity of 205 pb^-1. We found no evidence of this decay channel, and set 95% confidence level limit on the production cross section times branching fraction assuming the light neutrino. We also set the limit on the W' boson mass at M_{W'} > 788 GeV/c2, assuming the Standard Model strength couplings.


Blessed Plots and Tables:

Acceptance for W' as a function of the mass :
Acceptance times event selection efficiency as a function of W' boson mass calculated using Monte Carlo. The uncertainties are statistical only. EPS or GIF,

Expected transverse mass distribution :
The expected M_T distributions in 205 pb^-1 of data for the background (black) and the signal of W' -> e nu with M_{W'} = 400 GeV/c2 (red), 600 GeV/c2 (green), and 800 GeV/c2 (blue). EPS or GIF,

Transverse Mass Fitting :
The transverse mass distributions of W/W' -> e nu candidate events in 205 pb^-1 of data and the Standard Model backgrounds. EPS or GIF,

Expected and Observed Number of Events :
The search results of the binned likelihood fitting method. Shown are expected numbers of SM background events in each M_T bin above 200 GeV/c2. PS or GIF,

The 95% CL limits on cross section times braching fraction :
The 95% CL limits on the cross section times braching fraction for (W' -> enu) assuming the Standard Model strength couplings is shown. the intercept of the lower cross section curve and the limit on the cross section curve yields M_{W'} > 788 GeV/c2 at 95% CL. Without the theoretical uncertainty on cross section (green band), the mass limit is M_{W'} > 800 GeV/c2. EPS or GIF,

The 95% CL limits on Standard Model strength couplings :
The 95% CL limits on Standard Model strength couplings is shown. Assuming the Standard Model strength couplings, The intercept of the two curves yields M_{W'} > 800 GeV/c2 at 95% CL. EPS or GIF,


Page page: http://www-cdf.fnal.gov/internal/physics/exotic/physics/r2a/00000000.template/index.html was last updated October 6th, 2004 by Stephan Lammel.
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