Constraints on Electron-quark Contact Interactions and Implications to models of leptoquarks and Extra Z Bosons
| dc.creator | Cheung, Kingman | |
| dc.date | 2001-06-22 | |
| dc.date | 2001-07-21 | |
| dc.date.accessioned | 2026-07-07T10:32:52Z | |
| dc.date.available | 2026-07-07T10:32:52Z | |
| dc.description | We update the global constraint on four-fermion $ee q q$ contact interactions. In this update, we included the published data of H1 and ZEUS for the 94--96 run in the $e^+ p$ mode and the newly published data of H1 for the 1999 run in the $e^- p$ 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 $1σ$ 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 $Λ^{eu}_{LL+(-)} > 23 (12.5)$ TeV is obtained. Implications to models of leptoquarks and extra Z bosons are examined. | |
| dc.description | 10 pages, a clarification of notation and a reference are added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0106251 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0106251 | |
| dc.identifier | Phys.Lett.B517:167-176,2001 | |
| dc.identifier | doi:10.1016/S0370-2693(01)00973-X | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178906 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Constraints on Electron-quark Contact Interactions and Implications to models of leptoquarks and Extra Z Bosons | |
| dc.type | text |