Constraints on extra-dimensional theories from virtual-graviton exchange
| dc.creator | Giudice, Gian Francesco | |
| dc.creator | Strumia, Alessandro | |
| dc.date | 2003-01-27 | |
| dc.date.accessioned | 2026-07-07T10:33:14Z | |
| dc.date.available | 2026-07-07T10:33:14Z | |
| dc.description | We study the effective interactions induced by loops of extra-dimensional gravitons and show the special role of a specific dimension-6 four-fermion operator, product of two flavour-universal axial currents. By introducing an ultraviolet cut-off, we compare the present constraints on low-scale quantum gravity from various processes involving real-graviton emission and virtual-graviton exchange. The LEP2 limits on dimension-6 four-fermion interactions give one of the strongest constraint on the theory, in particular excluding the case of strongly-interacting gravity at the weak scale. | |
| dc.description | 12 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0301232 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0301232 | |
| dc.identifier | Nucl.Phys.B663:377-393,2003 | |
| dc.identifier | doi:10.1016/S0550-3213(03)00404-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179040 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on extra-dimensional theories from virtual-graviton exchange | |
| dc.type | text |