Document Type

Article

Publication Date

1-6-2000

Abstract

© 2000 Published by Elsevier Science B.V. All rights reserved. A search for the leptonic decays of W bosons produced in the reaction e+ p → e+ W± X at a centre-of-mass energy of 300GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7 pb-1. Three events consistent with W → eν decay are found, giving a cross section estimate of 0.9+10-07±0.2 pb, in good agreement with the Standard Model prediction. The corresponding 95% C.L. upper limit on the cross section is 3.3 pb. A search for the decay W → μν has a smaller selection efficiency and yields no candidate events. Limits on the cross section for W production with large hadronic transverse momentum have been obtained. A search for high-transverse-momentum isolated tracks in events with large missing transverse momentum yields results in good agreement with Standard Model expectations, in contrast to a recent report by the H1 collaboration of the observation of an excess of such events.

Journal Title

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume

471

Issue

4

First Page

411

Last Page

428

DOI

https://doi.org/10.1016/S0370-2693(99)01358-1

First Department

Physics

Acknowledgements

Accepted version retrieved July 19, 2021 from https://arxiv.org/pdf/hep-ex/9907023.pdf

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