| We describe the analysis of data from the 1994--1995 collider run (1B) at the Fermi National Laboratory. We measure the ratio R=sxBpp &d1;→W→en sxB pp&d1;→Z→ e+e- , at a center of mass energy of s = 1800 GeV. The data sample contains 90.4pb --1 taken with the Collider Detector at Fermilab (CDF). We find that R is 10.26 +/- 0.15 (stat) +/- 0.18 (syst). Using theoretical calculations and the LEP measurement for the branching ratio of Z bosons decaying to electron--positron pairs ( GZ→e+e -/G Z ), we determine the branching ratio of W+/-→e+/- n , GW+/-→ e+/-n/G W . We find that the W+/-→e+/- n branching ratio is 0.1026 +/- 0.0016 +/- 0.0018. Using the Standard Model calculation of the partial width for W+/-→e+/- n , GW+/-→ e+/-n , we determine the full decay width of the W boson, GW = 2.203 +/- 0.035 +/- 0.038. |
