Constraints on electron quark contact interactions and implications to models of leptoquarks and extra bosons
Jun, 200110 pages
Published in:
- Phys.Lett.B 517 (2001) 167-176
e-Print:
- hep-ph/0106251 [hep-ph]
Report number:
- NSC-NCTS-010622
View in:
Citations per year
Abstract: (arXiv)
We update the global constraint on four-fermion contact interactions. In this update, we included the published data of H1 and ZEUS for the 94--96 run in the mode and the newly published data of H1 for the 1999 run in the mode. Other major changes are the new LEPII data on hadronic cross sections above 189 GeV, and the atomic parity violation measurement on Cesium because of a new and improved atomic calculation, which drives the data within of the standard model value. The global data do not show any evidence for contact interactions, and we obtain 95% C.L. limits on the compositeness scale. A limit of TeV is obtained. Implications to models of leptoquarks and extra Z bosons are examined.- electron p: deep inelastic scattering
- positron p: deep inelastic scattering
- electron quark: four-fermion interaction
- electron positron: annihilation
- hadron: electroproduction
- parity: violation
- atomic physics
- anti-p p: inclusive reaction
- Drell-Yan process
- lepton: pair production
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