High Energy Physics - Phenomenology, abstract

Submitted: 30 March 1999

New Results on the Precision of the LEP Luminosity

Authors: S. Jadach, M. Melles, B.F.L. Ward and S.A. Yost
Comments: 6 pgs
Journal-ref: Acta Phys. Polon. B30 (1999), 1745-1750

We present recent progress on the theoretical precision limits of the LEP luminosity process, as calculated by the Monte Carlo generator BHLUMI4.04. We include exact results for all two-photon radiative corrections in the process e⁺ e^- e⁺ e^- at small angles and LEP energies. These results reduce the precision estimate for the O(α²) photonic radiative correction from 0.1% to 0.027%, leading to an overall precision of 0.061% for the currently published version of BHLUMI4.04. This precision level is important for the final precision Z physics measurements at LEP1. We also present precision estimates for LEP2.

High Energy Physics - Phenomenology, abstract

New Results on the Precision of the LEP Luminosity

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