Received: March 1995
Authors:
S. Jadach, M. Melles, W. Placzek, E. Richter-Was, M. Skrzypek, B.F.L. Ward,
Z. Was and S.A. Yost
Comments: 17 pgs
Journal-ref: Reports of the
working group on precision calculations for the Z resonance,
ed. D. Bardin, W. Hollik, G. Passarino, (CERN Yellow Report 95-03, 1995),
pp. 343 - 359.
In this contribution, we present new numerical results for the QED second-order radiative corrections to the low-angle Bhabha cross-section from the new Monte Carlo event generator, BHLUMI4.0. Our main concern is the precision of these calculations. We discuss quantitatively both technical precision (numerical problems) and physical precision (higher orders). The results presented here will be essential in the future reduction of the overall theoretical uncertainty in the measurement of the luminosity at LEP below the present 0.25% level.