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 gg→ZZ on the whole so that the resonance peak of the radion becomes easy to detect, whereas the RS effects on the qq̄→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 1σ sensitivity bounds on (Λπ,mφ) with k/MPI = O.1 are also obtained such that the effective weak scale Λπ of order 5 TeV can be experimentally probed.
|Number of pages||6750730|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Issue number||7 B|
|Publication status||Published - 2002 Apr 1|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)