Phenomenology of a fake Inert Doublet Model
Abstract We introduce a new way of modeling the physics beyond the Standard Model by considering fake, strictly off-shell degrees of freedom: the fakeons. To demonstrate the approach and exemplify its reach, we re-analyze the phenomenology of the Inert Doublet Model under the assumption that the sec...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-10-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP10(2021)132 |
| _version_ | 1823965826043084800 |
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| author | Damiano Anselmi Kristjan Kannike Carlo Marzo Luca Marzola Aurora Melis Kristjan Müürsepp Marco Piva Martti Raidal |
| author_facet | Damiano Anselmi Kristjan Kannike Carlo Marzo Luca Marzola Aurora Melis Kristjan Müürsepp Marco Piva Martti Raidal |
| author_sort | Damiano Anselmi |
| collection | DOAJ |
| description | Abstract We introduce a new way of modeling the physics beyond the Standard Model by considering fake, strictly off-shell degrees of freedom: the fakeons. To demonstrate the approach and exemplify its reach, we re-analyze the phenomenology of the Inert Doublet Model under the assumption that the second doublet is a fakeon. Remarkably, the fake doublet avoids the most stringent Z-pole constraints regardless of the chosen mass scale, thereby allowing for the presence of new effects well below the electroweak scale. Furthermore, the absence of on-shell propagation prevents fakeons from inducing missing energy signatures in collider experiments. The distinguishing features of the model appear at the loop level, where fakeons modify the Higgs boson h → γγ decay width and the Higgs trilinear coupling. The running of Standard Model parameters proceeds as in the usual Inert Doublet Model case. Therefore, the fake doublet can also ensure the stability of the Standard Model vacuum. Our work shows that fakeons are a valid alternative to the usual tools of particle physics model building, with the potential to shape a new paradigm, where the significance of the existing experimental constraints towards new physics must necessarily be reconsidered. |
| first_indexed | 2024-12-17T18:03:20Z |
| format | Article |
| id | doaj.art-edeec212528d46a488ee0199dc58d5d3 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-17T18:03:20Z |
| publishDate | 2021-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-edeec212528d46a488ee0199dc58d5d32022-12-21T21:38:14ZengSpringerOpenJournal of High Energy Physics1029-84792021-10-0120211012010.1007/JHEP10(2021)132Phenomenology of a fake Inert Doublet ModelDamiano Anselmi0Kristjan Kannike1Carlo Marzo2Luca Marzola3Aurora Melis4Kristjan Müürsepp5Marco Piva6Martti Raidal7Dipartimento di Fisica “E. Fermi”, Università di PisaLaboratory of High Energy and Computational Physics, NICPBLaboratory of High Energy and Computational Physics, NICPBLaboratory of High Energy and Computational Physics, NICPBLaboratory of High Energy and Computational Physics, NICPBLaboratory of High Energy and Computational Physics, NICPBLaboratory of High Energy and Computational Physics, NICPBLaboratory of High Energy and Computational Physics, NICPBAbstract We introduce a new way of modeling the physics beyond the Standard Model by considering fake, strictly off-shell degrees of freedom: the fakeons. To demonstrate the approach and exemplify its reach, we re-analyze the phenomenology of the Inert Doublet Model under the assumption that the second doublet is a fakeon. Remarkably, the fake doublet avoids the most stringent Z-pole constraints regardless of the chosen mass scale, thereby allowing for the presence of new effects well below the electroweak scale. Furthermore, the absence of on-shell propagation prevents fakeons from inducing missing energy signatures in collider experiments. The distinguishing features of the model appear at the loop level, where fakeons modify the Higgs boson h → γγ decay width and the Higgs trilinear coupling. The running of Standard Model parameters proceeds as in the usual Inert Doublet Model case. Therefore, the fake doublet can also ensure the stability of the Standard Model vacuum. Our work shows that fakeons are a valid alternative to the usual tools of particle physics model building, with the potential to shape a new paradigm, where the significance of the existing experimental constraints towards new physics must necessarily be reconsidered.https://doi.org/10.1007/JHEP10(2021)132Beyond Standard ModelHiggs Physics |
| spellingShingle | Damiano Anselmi Kristjan Kannike Carlo Marzo Luca Marzola Aurora Melis Kristjan Müürsepp Marco Piva Martti Raidal Phenomenology of a fake Inert Doublet Model Journal of High Energy Physics Beyond Standard Model Higgs Physics |
| title | Phenomenology of a fake Inert Doublet Model |
| title_full | Phenomenology of a fake Inert Doublet Model |
| title_fullStr | Phenomenology of a fake Inert Doublet Model |
| title_full_unstemmed | Phenomenology of a fake Inert Doublet Model |
| title_short | Phenomenology of a fake Inert Doublet Model |
| title_sort | phenomenology of a fake inert doublet model |
| topic | Beyond Standard Model Higgs Physics |
| url | https://doi.org/10.1007/JHEP10(2021)132 |
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