Gauge Invariant YFS Exponentiation of (Un)stable $W^+W^-$ Production At and Beyond LEP2 Energies

Details Gauge Invariant YFS Exponentiation of (Un)stable $W^+W^-$ Production At and Beyond LEP2 Energies Gauge Invariant YFS Exponentiation of (Un)stable $W^+W^-$ Production At and Beyond LEP2 Energies

1996-06-25

arxiv.org/abs/hep-ph/9606429v2

Phys.Rev.D54:5434-5442,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex replaces postscript, 17 pages

Scientific paper

10.1103/PhysRevD.54.5434

We present the theoretical basis and sample Monte Carlo data for the YFS exponentiated calculation of $e^+e^- \rightarrow W^+ W^- \rightarrow f_1\bar f'_1 + \bar f_2 f'_2$ at and beyond LEP2 energies, where the left-handed parts of $f_i$ and $f'_i$ are the respective upper and lower components of an $SU_{2L}$ doublet, $i=1,2$. The problem of gauge invariance of the radiation from the unstable charged spin~1 $W^{\pm}$ is solved in an entirely physical manner. Our formulas are illustrated in a proto-typical YFS Monte Carlo event generator YFSWW2, wherein both Standard Model and anomalous triple gauge boson couplings are allowed.

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