Charged Loops at the Cosmological Collider with Chemical Potential
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918287919546368 |
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| author | Bodas, Arushi Broadberry, Edward Sundrum, Raman Xu, Zhaohui |
| author_facet | Bodas, Arushi Broadberry, Edward Sundrum, Raman Xu, Zhaohui |
| contents | Cosmological collider physics allows the detection of heavy particles at inflationary scales through their imprints on primordial non-Gaussianities. We study the chemical potential mechanism applied to a pair of charged scalars. We analytically evaluate the resulting one-loop contribution to the bispectrum, using the spectral decomposition. In this way we are able to determine the parametric dependences for both the signal and the background. We show that a signal strength $f_{\mathrm{NL}}\sim O(0.01)$ can be obtained within theoretical control, potentially reachable by 21cm tomography. As an application we consider the colored Higgs bosons in $\mathrm{SU}(5)$ supersymmetric orbifold grand unification with masses $M\lesssim10^{15}\:\mathrm{GeV}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_22978 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Charged Loops at the Cosmological Collider with Chemical Potential Bodas, Arushi Broadberry, Edward Sundrum, Raman Xu, Zhaohui High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Cosmological collider physics allows the detection of heavy particles at inflationary scales through their imprints on primordial non-Gaussianities. We study the chemical potential mechanism applied to a pair of charged scalars. We analytically evaluate the resulting one-loop contribution to the bispectrum, using the spectral decomposition. In this way we are able to determine the parametric dependences for both the signal and the background. We show that a signal strength $f_{\mathrm{NL}}\sim O(0.01)$ can be obtained within theoretical control, potentially reachable by 21cm tomography. As an application we consider the colored Higgs bosons in $\mathrm{SU}(5)$ supersymmetric orbifold grand unification with masses $M\lesssim10^{15}\:\mathrm{GeV}$. |
| title | Charged Loops at the Cosmological Collider with Chemical Potential |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2507.22978 |