Spin-2 KK Mode Scattering In Models With A Massive Radion - ArXiv

High Energy Physics - Phenomenology arXiv:2104.08169 (hep-ph) [Submitted on 16 Apr 2021] Title:Spin-2 KK Mode Scattering in Models with a Massive Radion Authors:R. Sekhar Chivukula, Dennis Foren, Kirtimaan A. Mohan, Dipan Sengupta, Elizabeth H. Simmons View a PDF of the paper titled Spin-2 KK Mode Scattering in Models with a Massive Radion, by R. Sekhar Chivukula and 4 other authors View PDF

Abstract:We calculate tree-level scattering amplitudes of massive spin-2 KK particles in models of stabilized compact extra-dimensional theories. Naively introducing a mass for the radion in an extra-dimensional model without accounting for the dynamics responsible for stabilizing the extra dimension upsets the cancellations relating the masses and couplings of the spin-2 modes, resulting in KK scattering amplitudes which grow like $E^{4}$ instead of $E^{2}$. We therefore investigate scattering of the Kaluza-Klein states in theories incorporating the Goldberger-Wise mechanism to stabilize the size of the extra dimension. We demonstrate that the cancellations occur only when one includes not only the massive radion, but also the massive spin-0 modes arising from the Goldberger-Wise scalar. We compute the revised sum rules which are satisfied in a stabilized model to ensure a consistent high-energy scattering amplitude. We introduce a simple model of a stabilized extra dimension which is a small deformation of a flat (toroidal) five-dimensional model, and demonstrate the cancellations in computations performed to leading nontrivial order in the deformation. These results are the first complete KK scattering computation in an extra-dimensional model with a stabilized extra dimension, with implications for the theory and phenomenology of these models.

Comments:	33 pages, 1 figure, 2 tables
Subjects:	High Energy Physics - Phenomenology (hep-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)
Report number:	MSUHEP-21-008
Cite as:	arXiv:2104.08169 [hep-ph]
(or arXiv:2104.08169v1 [hep-ph] for this version)
https://doi.org/10.48550/arXiv.2104.08169 Focus to learn more arXiv-issued DOI via DataCite
Journal reference:	Phys. Rev. D 103, 095024 (2021)
Related DOI:	https://doi.org/10.1103/PhysRevD.103.095024 Focus to learn more DOI(s) linking to related resources

Submission history

From: Dennis Foren [view email] [v1] Fri, 16 Apr 2021 15:29:23 UTC (135 KB) Full-text links:

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