2001/03/31 by Seong Chan Park, H. S. Song, Jeonghyeon Song
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.65.075008
published as Phys.Rev.D65:075008,2002 · 28 pages, LaTex file, 18 eps figures
arxiv created 2001/12/17 · openalex publication_date 2002/03/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the Z boson pair production at the CERN Large Hadron Collider in the Randall-Sundrum (RS) scenario with the Goldberger-Wise stabilization mechanism. It is shown that a comprehensive account of the Kaluza-Klein (KK) graviton and radion effects is crucial to probe the model: The KK graviton effects enhance the cross section of g\stackrel\ensuremath→gZZ on the whole so that the resonance peak of the radion becomes easy to detect, whereas the RS effects on the qq\ensuremath→ZZ process are rather insignificant. The pT and invariant-mass distributions are presented to study the dependence of the RS model parameters. The production of longitudinally polarized Z bosons, to which the standard model contributions are suppressed, is mainly due to KK gravitons and the radion, providing one of the most robust methods to signal the RS effects. The 1\ensuremathσ sensitivity bounds on (\ensuremathΛ_\ensuremathπ,m_\ensuremathφ) with k/MPl=0.1 are also obtained such that the effective weak scale \ensuremathΛ_\ensuremathπ of order 5 TeV can be experimentally probed.