Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.03110 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917188905992192 |
|---|---|
| author | Tamlihat, Malak Ait Ez-Zobayr, Ghizlane Schoeffel, Laurent Tayalati, Yahya |
| author_facet | Tamlihat, Malak Ait Ez-Zobayr, Ghizlane Schoeffel, Laurent Tayalati, Yahya |
| contents | We present a comprehensive phenomenological analysis of the Radion in the Randall-Sundrum model, focusing on its production via light-by-light scattering in ultra-peripheral proton-proton collisions at the LHC. We provide a consistent derivation of the effective couplings to Standard Model fields, clarifying the normalization of the trace anomaly-induced coupling to photons and the role of kinetic mixing with the Higgs boson. We demonstrate that while the pure gravitational coupling is loop-suppressed relative to Axion-Like Particles (ALPs), making the unmixed Radion elusive, the non-minimal mixing with the Higgs sector can induce constructive interference that enhances the signal by orders of magnitude. Using forward proton tagging to select exclusive high-mass events, we reinterpret recent experimental limits on ALPs to derive the first exclusion contours for the Radion in the $(Λ_r, ξ)$ plane, showing that mixing scenarios are beginning to be constrained by current LHC data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_03110 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Searches for extra-dimensional excitations in light-by-light scattering Tamlihat, Malak Ait Ez-Zobayr, Ghizlane Schoeffel, Laurent Tayalati, Yahya High Energy Physics - Phenomenology We present a comprehensive phenomenological analysis of the Radion in the Randall-Sundrum model, focusing on its production via light-by-light scattering in ultra-peripheral proton-proton collisions at the LHC. We provide a consistent derivation of the effective couplings to Standard Model fields, clarifying the normalization of the trace anomaly-induced coupling to photons and the role of kinetic mixing with the Higgs boson. We demonstrate that while the pure gravitational coupling is loop-suppressed relative to Axion-Like Particles (ALPs), making the unmixed Radion elusive, the non-minimal mixing with the Higgs sector can induce constructive interference that enhances the signal by orders of magnitude. Using forward proton tagging to select exclusive high-mass events, we reinterpret recent experimental limits on ALPs to derive the first exclusion contours for the Radion in the $(Λ_r, ξ)$ plane, showing that mixing scenarios are beginning to be constrained by current LHC data. |
| title | Searches for extra-dimensional excitations in light-by-light scattering |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.03110 |