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ZEUS Collaboration,Chekanov, S.,Derrick, M.,Magill, S.,Musgrave, B.,Nicholass, D.,Repond, J.,Yoshida, R.,Mattingly, M.C.K.,Antonioli, P.,Bari, G.,Bellagamba, L.,Boscherini, D.,Bruni, A.,Bruni, G.,Cind North-Holland Pub. Co 2009 Physics letters: B Vol.672 No.2
A search for events with an isolated high-energy lepton and large missing transverse momentum has been performed with the ZEUS detector at HERA using a total integrated luminosity of 504 pb<SUP>-1</SUP>. The results agree well with Standard Model predictions. The cross section for production of single W bosons in electron-proton collisions with unpolarised electrons is measured to be 0.89<SUB>-0.22</SUB><SUP>+0.25</SUP>(stat.)+/-0.10(syst.)pb.
Measurement of the longitudinal proton structure function at HERA
ZEUS Collaboration,Chekanov, S.,Derrick, M.,Magill, S.,Musgrave, B.,Nicholass, D.,Repond, J.,Yoshida, R.,Mattingly, M.C.K.,Antonioli, P.,Bari, G.,Bellagamba, L.,Boscherini, D.,Bruni, A.,Bruni, G.,Cind North-Holland Pub. Co 2009 Physics letters: B Vol.682 No.1
The reduced cross sections for ep deep inelastic scattering have been measured with the ZEUS detector at HERA at three different centre-of-mass energies, 318, 251 and 225 GeV. From the cross sections, measured double differentially in Bjorken x and the virtuality, Q<SUP>2</SUP>, the proton structure functions F<SUB>L</SUB> and F<SUB>2</SUB> have been extracted in the region 5x10<SUP>-4</SUP><x<0.007 and 20<Q<SUP>2</SUP><130 GeV<SUP>2</SUP>.