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arXiv · hep-ph/9703348

Signatures of Parton Exogamy in e+ e- -> W+ W- -> hadrons

John Ellis·Klaus Geiger
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Abstract

We propose possible signatures of `exogamous' combinations between partons in the different W+ and W- hadron showers in e+e- -> W+W- events with purely hadronic final states. Within the space-time model for hadronic shower development that we have proposed previously, we find a possible difference of about 10 % between the mean hadronic multiplicity in such purely hadronic final states and twice the hadronic multiplicity in events in which one W decays hadronically and the other leptonically, i.e., \ne 2 , associated with the formation of hadronic clusters by `exogamous' pairs of partons. We discuss the dependence of this possible difference in multiplicity on the center-of-mass energy, on the hadron momenta, and on the angular separation between the $W^{\pm}$ dijets. If it were observed, any such multiplicity difference would indicate that the W's do not hadronize independently, and hence raise questions about the accuracy with which the W mass could be determined from purely hadronic final states.

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John Ellis, Klaus Geiger. 1997-03-18. Signatures of Parton Exogamy in e+ e- -> W+ W- -> hadrons. https://doi.org/10.1016/s0370-2693(97)00577-7

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