Global Study of Electron-Quark Contact Interactions
Abstract
We perform a global fit of data relevant to contact interactions, including deep inelastic scattering at high from ZEUS and H1, atomic physics parity violation in Cesium from JILA, polarized on nuclei scattering experiments at SLAC, Mainz and Bates, Drell-Yan production at the Tevatron, the total hadronic cross section at LEP, and neutrino-nucleon scattering from CCFR. With only the new HERA data, the presence of contact interactions improves the fit compared to the Standard Model. When other data sets are included, the size of the contact contributions is reduced and the overall fit represents no real improvement over the Standard Model.
Cite
@article{arxiv.hep-ph/9707412,
title = {Global Study of Electron-Quark Contact Interactions},
author = {V. Barger and Kingman Cheung and K. Hagiwara and D. Zeppenfeld},
journal= {arXiv preprint arXiv:hep-ph/9707412},
year = {2008}
}
Comments
26 pages (now single-spaced), Revtex, 2 eps figures, uses epsf.sty. Some clarifications, minor corrections, 2 new references, also 3 new tables which present 95% CL bounds on the contact interaction scales Lambda