Bounds on Contact Interactions from LEP1 Data and the High-Q^2 HERA Events

Details Bounds on Contact Interactions from LEP1 Data and the High-Q^2 HERA Events Bounds on Contact Interactions from LEP1 Data and the High-Q^2 HERA Events

1997-03-18

arxiv.org/abs/hep-ph/9703346v1

Phys.Lett. B407 (1997) 255-258

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, RevTeX, epsfig, one figure

Scientific paper

10.1016/S0370-2693(97)00738-7

A contact four-fermion interaction between light quarks and electrons has been evoked as a possible explanation for the excess of events observed by HERA at high-$Q^2$. We explore the 1-loop effects of such interaction in $\Gamma(Z^0 \to e^+ e^-)$ measured at LEP and impose strong bounds on the lower limit of the effective scale. Our results are able to discard some of the contact interactions as possible explanation for the HERA events.

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