Search for Contact Interactions in Deep Inelastic e^+p->e^+X Scattering at HERA

Details Search for Contact Interactions in Deep Inelastic e^+p->e^+X Scattering at HERA Search for Contact Interactions in Deep Inelastic e^+p->e^+X Scattering at HERA

1999-05-21

arxiv.org/abs/hep-ex/9905039v3

Eur.Phys.J.C14:239-254,2000

Physics

High Energy Physics

High Energy Physics - Experiment

27 pages including 7 figures; Correction 07/June/99: labels VV and VA in fig. 4 interchanged; Replaced 14/Jan/00: minor textua

Scientific paper

In a search for signatures of physics processes beyond the Standard Model, various eeqq vector contact-interaction hypotheses have been tested using the high-Q^2, deep inelastic neutral-current e^+p scattering data collected with the ZEUS detector at HERA. The data correspond to an integrated luminosity of 47.7pb-1 of e^+p interactions at 300GeV center-of-mass energy. No significant evidence of a contact-interaction signal has been found. Limits at the 95% confidence level are set on the contact-interaction amplitudes. The effective mass scales Lambda corresponding to these limits range from 1.7TeV to 5TeV for the contact-interaction scenarios considered.

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