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arXiv · hep-ph/9506266

Search for Large Rapidity Gap Events in e^+ e^- Annihilation

J. Ellis·D. A. Ross
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Abstract

We investigate the cross-section for the production of a low-mass colour-singlet cluster in $e^+e^-$ annihilation with a large rapidity gap between the colour-singlet cluster and the other jets. It is argued that such events are the cross-channel analogue of large-rapidity-gap events in deep-inelastic scattering, and therefore could in principle be used to investigate the analytic continuation of the BFKL pomeron to the positive-$t$ kinematic regime, where one would expect the trajectory to pass through glueball states. The cross section can be calculated in perturbative QCD, so that the infrared scale arising from non-perturbative effects, which prevents an exponential fall-off with rapidity gap in the case of deep-inelastic scattering, is absent in $e^+ e^-$ annihilation. Correspondingly, the cross section for such events decreases rapidly with increasing rapidity gap.

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J. Ellis, D. A. Ross. 1995-06-10. Search for Large Rapidity Gap Events in e^+ e^- Annihilation. https://doi.org/10.1007/s002880050088

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