Neutral Z boson pair production due to radion resonance in the Randall-Sundrum model:: Prospects at the CERN LHC -: art. no. 055009

The neutral Z boson pair production due to radion resonance at the Large Hadron Collider (LHC) is an interesting process to explore the notion of warped geometry (Randall-Sundrum model). Because of the enhanced coupling of radion with a pair of gluons due to trace anomaly and top(quark) loop, the radion can provide a larger event rate possibility as compared to any new physics effect. Using the proper radion-top-antitop (with the quarks being off-shell) coupling, we obtain the correct radion production rate at LHC and explore several features of a heavier radion decaying into a pair of real Z bosons which subsequently decays into charged 4l (l=e,mu) leptons (the gold-plated mode). Using the signal and the background event rate, we obtain bounds on radion mass m(phi) and radion vacuum expectation value <phi > at the 5 sigma, 10 sigma discovery level.