RT Journal Article
T1 Strong tree level unitarity violations in the extra dimensional standard model with scalars in the bulk
A1 Curtis, Stefania De
A1 Dominici, Daniele
A1 Peláez Sagredo, José Ramón
AB We show how the tree-level unitarity violations of compactified extra dimensional extensions of the standard model become much stronger when the scalar sector is included in the bulk. This effect occurs when the couplings are not suppressed for larger Kaluza-Klein levels, and could have relevant consequences for the phenomenology of the next generation of colliders. We also introduce a simple and generic formalism to obtain unitarity bounds for finite energies, taking into account coupled channels including the towers of Kaluza-Klein excitations.
PB Amer Physical Soc
SN 0556-2821
YR 2003
FD 2003-04
LK https://hdl.handle.net/20.500.14352/51739
UL https://hdl.handle.net/20.500.14352/51739
LA eng
NO ©2003 The American Physical Society.J.R.P. is thankful for support from the Spanish CICYT, Project Nos. PB98-0782 and BFM2000 1326, as well as the European Community for a Marie Curie fellowship under contract MCFI-2001-01155.
NO Spanish CICYT
NO Marie Curie fellowship
DS Docta Complutense
RD 14 dic 2025