Warped Graviton Couplings to Bulk Vectors with Brane Localised Kinetic Terms
Archil Kobakhidze, Kristian L. McDonald, Lei Wu, Jason Yue
TL;DR
This paper explores how adding brane-localized kinetic terms in the Randall-Sundrum model can modify KK graviton couplings to bulk vectors, aligning theoretical predictions with electroweak precision data.
Contribution
It introduces a method to achieve non-universal KK graviton couplings through brane-localized kinetic terms, improving model consistency with experimental constraints.
Findings
Brane kinetic terms reduce KK graviton couplings to gauge bosons.
Such terms help satisfy electroweak precision constraints.
The model allows for adjustable KK vector masses.
Abstract
We realize non-universal couplings between Kaluza-Klein (KK) gravitons and bulk Standard Model (SM) vectors in the Randall-Sundrum (RS) model by including both UV and IR brane-localised gauge kinetic terms. We find that such kinetic terms can reduce the couplings of KK gravitons to SM gauge bosons and also ensure the KK vector masses are consistent with electroweak precision constraints.
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