  E865 at the Brookhaven National Laboratory AGS collected about 70,000 K+(e3)
events to measure the K+(e3) branching ratio relative to the observed K+ -> pi+
pi0, K+ -> pi0 mu+ nu, and K+ -> pi+ pi0 decays. The pi0 in all the decays was
detected using the e+e- pair from pi0 -> e+e-gamma decay and no photons were
required. Using the Particle Data Group branching ratios for the normalization
decays we obtain
BR(K+(e3(gamma))=(5.13+/-0.02(stat)+/-0.09(sys)+/-0.04(norm))%, where
$K+(e3(gamma)) includes the effect of virtual and real photons. This result is
2.3 sigma higher than the current Particle Data Group value. The implications
of this result for the $V_{us}$ element of the CKM matrix, and the matrix's
unitarity are discussed.
