Amita Raval (DESY)
A search for events containing an isolated electron or muon and missing transverse momentum produced in e±p collisions is performed with the H1 and ZEUS detectors at HERA. The data were taken in the period 1994-2007 and correspond to an integrated luminosity of 0.98 fb-1. The total single W boson production cross section is measured as 1.06 ± 0.16 (stat.) ± 0.07 (sys.) pb, in agreement with a SM expectation of 1.26 ± 0.19 pb. The production of Z0 bosons in ep collisions at HERA has been searched for and the resulting di-jet invariant mass distribution is presented for the selected event topologies.
HERA HERA (DESY)