Z boson decay to photon plus Kaluza-Klein graviton in large extra dimensions
Ben C. Allanach, Jordan P. Skittrall, K. Sridhar
TL;DR
This paper calculates the decay width of Z bosons into a photon and Kaluza-Klein gravitons in large extra dimensions, providing insights into potential signals of extra dimensions in particle physics experiments.
Contribution
It extends previous theoretical work by explicitly computing the decay amplitude for Z bosons into photon and KK gravitons in the ADD model.
Findings
Derived explicit decay width formulas for Z to photon plus KK gravitons.
Extended the understanding of on-shell amplitudes in extra-dimensional models.
Relevant for experimental searches for extra dimensions at colliders.
Abstract
In the large extra dimensional ADD scenario, Z bosons undergo a one-loop decay into a photon and Kaluza-Klein towers of gravitons/gravi-scalars. We calculate such a decay width, extending previous arguments about the general form of the four-dimensional on-shell amplitude. The amplitudes calculated are relevant to processes in other extra dimensional models where the Standard Model fields are confined to a 4-brane.
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