https://doi.org/10.1051/epjconf/20147100099
Real W and Z bosons production at HERA
Department of Physics, Tokyo Institute of Technology, 152-8551 Japan
a e-mail: nobe@hep.phys.titech.ac.jp
Published online: 29 April 2014
The production of real W and Z bosons has been studied in ep collisions at HERA. A combined analysis is performed with the data taken with the H1 and ZEUS detectors corresponding to 0.98 fb−1 of integrated luminosity to search for events containing an isolated electron or muon and missing transverse momentum, which is dominated by single W production. The total single W boson production cross section is measured as 1.06 ± 0.16(stat.) ± 0.07(sys.) pb, in agreement with the Standard Model (SM) expectation of 1.26 ± 0.19 pb. The production of Z bosons has been studied in the reaction ep → eZp(∗), where p(∗) stands for a proton or a low-mass nucleon resonance, using a data sample collected with the ZEUS detector amounting to 0.5 fb−1. The Z is measured in the hadronic decay mode. The cross section of the reaction ep → eZp(∗) is measured to be 0.13 ± 0.06(stat.) ± 0.01(syst.) pb, in agreement with the SM prediction of 0.16 pb.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.