Search for contact interactions in deep inelastic scattering at HERA
The ZEUS Collaboration
J. Breitweg - et al.
Received: 18 May 1999 / Revised version: 14 January 2000 /
Published online: 25 February 2000 - © Springer-Verlag 2000
In a search for signatures of physics processes beyond the Standard Model, various eeqq vector contact-interaction hypotheses have been tested using the high-Q2 deep inelastic neutral-current e+p scattering data collected with the ZEUS detector at HERA. The data correspond to an integrated luminosity of of e+p interactions at center-of-mass energy. No significant evidence of a contact-interaction signal has been found. Limits at the confidence level are set on the contact-interaction amplitudes. The effective mass scales corresponding to these limits range from to for the contact-interaction scenarios considered.
Copyright Società Italiana di Fisica, Springer-Verlag 2000