Complete Initial State QED Corrections to Off-Shell Gauge Boson Pair Production in e+e- Annihilation

Abstract

We study Standard Model four-fermion production in e+ e- annihilation at LEP2 energies and above using a semi-analytical approach. We derive the complete QED initial state corrections (ISR) to the reactions e+e- -> ZZ -> $f_1\overline{f_1}{f}_2\overline{f_2}$ and e+e- -> W+W- -> ${\bar{f}}_1^u{f}_1^d{f}_2^u{\bar{f}}_2^d$ with $f_1\ne f_2$~and $f_i\ne e^{\pm },{\nu }_e$. As compared to the well-known universal s-channel ISR, additional complexity arises due to non-universal, process-dependent ISR contributions from t- and u-channel fermion exchanges. The full set of formulae needed to perform numerical calculations is given together with samples of numerical results.

65 pages, 4 postscript figures, uses elsart.sty, amsfonts.sty, and epsfig.sty, full postscript available from http://www.ifh.de/~lehner/desy96-028.ps.gz

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• Final-state radiation and line-shape distortion in resonance pair production
• Anomalous Gauge Boson Couplings in the e^+ e^- -> ZZ Process
• QCD corrections to $e^{+}{e}^{-}\to u\bar{d}s\bar{c}$ at Lep 2 and the Next Linear Collider: CC11 at O(α_s)
• Seeking CP Violating Couplings in ZZ Production at LEP2