Implication of Brane fluctuations to indirect collider signals

We study the effect of brane fluctuation on the indirect signals of high energy colliders. Brane fluctuation could act as a regulator of divergent expression of infinite tower of Kaluza-Klein graviton effects. The phenomenological parameter A, introduced by Hewett, is shown to be determined in our setting, and its dramatic behaviors depending on the D = 4 - δ dimensional gravitation scale M_D, 'softening parameter' Δ, and √s of collider are presented. The present exclusion bounds from the processes e⁺e^- → γγ and pp̄ → e⁺e^-, γγ(γ) are considered within the parameter space (M_D, Δ) with respect to the number of extra dimensions.