Virtual gravitons and brane field scattering in the RS model with a small curvature
High Energy Physics - Theory
2013-05-29 v2 High Energy Physics - Phenomenology
Abstract
The contribution of virtual s-channel Kaluza-Klein (KK) gravitons to high energy scattering of the SM fields in the Randall-Sundrum (RS) model with two branes is studied. The small curvature option of the RS model is considered in which the KK gravitons are narrow low-mass spin-2 resonances. The analytical tree-level expression for a process-independent gravity part of the scattering amplitude is derived, accounting for nonzero graviton widths. It is shown that one cannot get a correct result, if a series of graviton resonances is replaced by a continuous mass distribution, in spite of the small graviton mass splitting. Such a replacement appeared to be justified only in the trans-Planckian energy region.
Keywords
Cite
@article{arxiv.hep-th/0507145,
title = {Virtual gravitons and brane field scattering in the RS model with a small curvature},
author = {A. V. Kisselev},
journal= {arXiv preprint arXiv:hep-th/0507145},
year = {2013}
}
Comments
18 pages