摘要
We perform a global fit of data relevant to (Formula presented) contact interactions, including deep inelastic scattering at high (Formula presented) from ZEUS and H1, atomic physics parity violation in cesium from JILA, polarized (Formula presented) on nuclei scattering experiments at SLAC, Mainz and Bates, Drell-Yan production at the Fermilab Tevatron, the total hadronic cross section (Formula presented) at CERN LEP, and neutrino-nucleon scattering from CCFR. With only the new DESY 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. © 1998 The American Physical Society.