Global Analysis of eeqq Contact Interactions and Future Prospects for High Energy Physics

摘要

Data from HERA, LEP and the Tevatron, as well as from low energy experimentsare used to constrain the scale of possible electron-quark contactinteractions. Different models are considered, including the most general one,in which all new couplings can vary independently. Limits on couplings and massscales are extracted and upper limits on possible effects to be observed infuture HERA, LEP and Tevatron running are estimated. Total hadroniccross-section at LEP and e-p scattering cross-section at HERA are stronglyconstrained by existing data, whereas large cross-section deviations are stillpossible for Drell-Yan lepton pair production at the Tevatron.