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Determination of the LEP Beam Energy using Z Recoil Events

Christian Rosenbleck
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Abstract

The precise knowledge of the beam energy, E_beam, at the LEP collider is important to reduce the systematic uncertainty on the W mass. The measurements by the LEP energy group can be cross checked using Z recoil events. Preliminary results of the four LEP experiments ALEPH, DELPHI, L3, and OPAL are presented. The combination of the results shows no significant deviation of the E_beam value obtained using Z recoil events from the measurement by the LEP energy group.

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Christian Rosenbleck. 2003-05-09. Determination of the LEP Beam Energy using Z Recoil Events. https://arxiv.org/abs/hep-ex/0305011

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