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

被引：12
|
作者：
Das, PK [1 ]
机构：
[1] Chung Yuan Christian Univ, Chungli 320, Taiwan
来源：
PHYSICAL REVIEW D | 2005年 / 72卷 / 05期
关键词：
D O I：
10.1103/PhysRevD.72.055009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
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页数：7
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