Limits on the brane fluctuations mass and on the brane tension scale from electron-positron colliders

Alcaraz, J.; Cembranos, J. A. R.; Dobado, A.; Maroto, A. L.

Limits on the brane fluctuations mass and on the brane tension scale from electron-positron colliders

Authors

Description

In the context of the brane-world scenarios with compactified large extra dimensions, we study the production of the possible massive brane oscillations (branons) in electron-positron colliders. We compute their contribution to the electroweak gauge bosons decay width and to the single-photon and single-Z processes. With LEP-I results and assuming non observation at LEP-II, we present exclusion plots for the brane tension $τ= f^4$ and the branon mass $M$. Prospects for the next generation of electron-positron colliders are also considered.
LaTeX, 38 pages, 7 figures. Minor changes, matches published version