Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-02-21
Phys.Lett. B487 (2000) 299-305
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTex, 13 pages, 6 figures, typos corrected and one reference added
Scientific paper
10.1016/S0370-2693(00)00819-4
Phenomenology of a radion ($\phi$) that stabilizes the modulus in the Randall-Sundrum scenario is considered. The radion couples to the trace of energy momentum tensor of the standard model (SM) with a strength suppressed only by a new scale ($\Lambda_{\phi}$) of an order of the electroweak scale. In particular, the effective coupling of a radion to two gluons are enhanced due to the trace anomaly of QCD. Therefore, its production cross section at hadron colliders could be enhanced, and the dominant decay mode of a relatively light radion is $\phi$ -> g g, unlike the SM Higgs boson case. We also present constraints on the mass $m_{\phi}$ and the new scale $\Lambda_{\phi}$ from the Higgs search limit at LEP and perturbative unitarity bound.
Bae Saebyok
Ko Pyungwon
Lee Hong Seok
Lee Jungil
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