Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions
Abstract The mirror twin Higgs model (MTH) is a solution to the Higgs hierarchy problem that provides well-predicted cosmological signatures with only three extra parameters: the temperature of the twin sector, the abundance of twin baryons, and the vacuum expectation value (VEV) of twin electroweak...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP05(2022)050 |
| _version_ | 1811235400908275712 |
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| author | Saurabh Bansal Jeong Han Kim Christopher Kolda Matthew Low Yuhsin Tsai |
| author_facet | Saurabh Bansal Jeong Han Kim Christopher Kolda Matthew Low Yuhsin Tsai |
| author_sort | Saurabh Bansal |
| collection | DOAJ |
| description | Abstract The mirror twin Higgs model (MTH) is a solution to the Higgs hierarchy problem that provides well-predicted cosmological signatures with only three extra parameters: the temperature of the twin sector, the abundance of twin baryons, and the vacuum expectation value (VEV) of twin electroweak symmetry breaking. These parameters specify the behavior of twin radiation and the acoustic oscillations of twin baryons, which lead to testable effects on the cosmic microwave background (CMB) and large-scale structure (LSS). While collider searches can only probe the twin VEV, through a fit to cosmological data we show that the existing CMB (Planck18 TTTEEE+lowE+lowT+lensing) and LSS (KV450) data already provide useful constraints on the remaining MTH parameters. Additionally, we show that the presence of twin radiation in this model can raise the Hubble constant H 0 while the scattering twin baryons can reduce the matter fluctuations S 8, which helps to relax the observed H 0 and S 8 tensions simultaneously. This scenario is different from the typical ΛCDM + ∆N eff model, in which extra radiation helps with the Hubble tension but worsens the S 8 tension. For instance, when including the SH0ES and 2013 Planck SZ data in the fit, we find that a universe with ≳ 20% of the dark matter comprised of twin baryons is preferred over ΛCDM by ∼ 4σ. If the twin sector is indeed responsible for resolving the H 0 and S 8 tensions, future measurements from the Euclid satellite and CMB Stage 4 experiment will further measure the twin parameters to O(1 − 10%)-level precision. Our study demonstrates how models with hidden naturalness can potentially be probed using precision cosmological data. |
| first_indexed | 2024-04-12T11:50:25Z |
| format | Article |
| id | doaj.art-3145e47edeaa4c3a98f5d8f3687c2df3 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-12T11:50:25Z |
| publishDate | 2022-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-3145e47edeaa4c3a98f5d8f3687c2df32022-12-22T03:34:11ZengSpringerOpenJournal of High Energy Physics1029-84792022-05-012022515210.1007/JHEP05(2022)050Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensionsSaurabh Bansal0Jeong Han Kim1Christopher Kolda2Matthew Low3Yuhsin Tsai4Department of Physics & Astronomy, University of Notre DameDepartment of Physics, Chungbuk National UniversityDepartment of Physics & Astronomy, University of Notre DameTheoretical Physics Department, FermilabDepartment of Physics & Astronomy, University of Notre DameAbstract The mirror twin Higgs model (MTH) is a solution to the Higgs hierarchy problem that provides well-predicted cosmological signatures with only three extra parameters: the temperature of the twin sector, the abundance of twin baryons, and the vacuum expectation value (VEV) of twin electroweak symmetry breaking. These parameters specify the behavior of twin radiation and the acoustic oscillations of twin baryons, which lead to testable effects on the cosmic microwave background (CMB) and large-scale structure (LSS). While collider searches can only probe the twin VEV, through a fit to cosmological data we show that the existing CMB (Planck18 TTTEEE+lowE+lowT+lensing) and LSS (KV450) data already provide useful constraints on the remaining MTH parameters. Additionally, we show that the presence of twin radiation in this model can raise the Hubble constant H 0 while the scattering twin baryons can reduce the matter fluctuations S 8, which helps to relax the observed H 0 and S 8 tensions simultaneously. This scenario is different from the typical ΛCDM + ∆N eff model, in which extra radiation helps with the Hubble tension but worsens the S 8 tension. For instance, when including the SH0ES and 2013 Planck SZ data in the fit, we find that a universe with ≳ 20% of the dark matter comprised of twin baryons is preferred over ΛCDM by ∼ 4σ. If the twin sector is indeed responsible for resolving the H 0 and S 8 tensions, future measurements from the Euclid satellite and CMB Stage 4 experiment will further measure the twin parameters to O(1 − 10%)-level precision. Our study demonstrates how models with hidden naturalness can potentially be probed using precision cosmological data.https://doi.org/10.1007/JHEP05(2022)050Beyond Standard ModelCosmology of Theories beyond the SM |
| spellingShingle | Saurabh Bansal Jeong Han Kim Christopher Kolda Matthew Low Yuhsin Tsai Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM |
| title | Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions |
| title_full | Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions |
| title_fullStr | Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions |
| title_full_unstemmed | Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions |
| title_short | Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions |
| title_sort | mirror twin higgs cosmology constraints and a possible resolution to the h 0 and s 8 tensions |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM |
| url | https://doi.org/10.1007/JHEP05(2022)050 |
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