2008•arXiv (Cornell University)Open access

Electroweak Measurements from HERA

Y. de Boer

Abstract

New preliminary electroweak results from the HERA lepton-proton collider experiments H1 and ZEUS are presented. These include new high Q^2 neutral current cross section measurements and limits on a possible quark radius, in the search for contact interactions, and on the quark-Z couplings, extracted in combined electroweak and QCD fits. Furthermore, new charged current cross section measurements as a function of the lepton-beam polarisation are presented, as well as charged current measurement results, using the combined HERA I data from H1 and ZEUS. Finally, measurements of the single W boson production cross section and the W boson polarisation fractions are presented.

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Key concepts: Electroweak interaction, HERA, Particle physics, Physics, ZEUS (particle detector), Lepton, Neutral current, Nuclear physics