Search for events with an isolated high transverse energy lepton and missing transverse momentum and W Production in ZEUS at HERA

A search for events with an isolated high transverse energy lepton and large
missing transverse momentum was performed with the ZEUS detector 
using data taken between 1994 and 2007 corresponding to 
an integrated luminosity of ~0.5 fb-1. The results are compared to the 
Standard Model predictions. The cross section for the production of 
single W bosons is presented.