Spin correlations in ${e^+e^-\rightarrow4}$ jets

S. Moretti; W.J. Stirling

doi:doi:10.1007/s100530050403

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2024 Impact factor 4.8

Particles and Fields

Eur. Phys. J. C 9, 81-93
DOI 10.1007/s100529900016

Spin correlations in ${e^+e^-\rightarrow4}$ jets

S. Moretti¹ - W.J. Stirling^2,3

¹ Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK
² Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK_ ³ Department of Mathematical Sciences, University of Durham, South Road, Durham DH1 3LE, UK

Received: 21 September 1998 / Revised version: 20 January 1999 / Published online: 22 March 1999

Abstract
Existence of discrepancies between experimental data and Monte Carlo predictions for angular distributions in four-jet production via e⁺e^- annihilation has been known for some time at LEP1. As such QCD processes constitute significant backgrounds to $e^+e^-\rightarrow W^+W^-$ $\to$ 4-jet production at LEP2, we consider the possibility that an erroneous modelling of the helicity structure of the final-state partons could affect the accuracy of experimental measurements of the $W^\pm$ boson parameters.