Lepton collider as a window to reheating via freezing in dark matter detection. Part II
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913946347241472 |
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| author | Barman, Basabendu Bhattacharya, Subhaditya Jahedi, Sahabub Pradhan, Dipankar Sarkar, Abhik |
| author_facet | Barman, Basabendu Bhattacharya, Subhaditya Jahedi, Sahabub Pradhan, Dipankar Sarkar, Abhik |
| contents | Dark matter (DM) genesis via Ultraviolet (UV) freeze-in embeds the seed of reheating temperature and dynamics in its relic density. Thus, discovery of such a DM candidate can possibly open the window for post-inflationary dynamics. However, there are several challenges in this exercise, as freezing-in DM possesses feeble interaction with the visible sector and therefore very low production cross-section at the collider. We show that mono-photon (and dilepton) signal at the ILC, arising from DM effective operators connected to the SM field strength tensors, can still warrant a signal discovery. We study both the scalar and fermionic DM production during reheating via UV freeze-in, when the inflaton oscillates at the bottom of a general monomial potential. Interestingly, we see, right DM abundance can be achieved only in the case of bosonic reheating scenario, satisfying bounds from big bang nucleosynthesis (BBN). This provides a unique correlation between collider signal and the post-inflationary dynamics of the Universe within single-field inflationary models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_18198 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Lepton collider as a window to reheating via freezing in dark matter detection. Part II Barman, Basabendu Bhattacharya, Subhaditya Jahedi, Sahabub Pradhan, Dipankar Sarkar, Abhik High Energy Physics - Phenomenology General Relativity and Quantum Cosmology High Energy Physics - Experiment Dark matter (DM) genesis via Ultraviolet (UV) freeze-in embeds the seed of reheating temperature and dynamics in its relic density. Thus, discovery of such a DM candidate can possibly open the window for post-inflationary dynamics. However, there are several challenges in this exercise, as freezing-in DM possesses feeble interaction with the visible sector and therefore very low production cross-section at the collider. We show that mono-photon (and dilepton) signal at the ILC, arising from DM effective operators connected to the SM field strength tensors, can still warrant a signal discovery. We study both the scalar and fermionic DM production during reheating via UV freeze-in, when the inflaton oscillates at the bottom of a general monomial potential. Interestingly, we see, right DM abundance can be achieved only in the case of bosonic reheating scenario, satisfying bounds from big bang nucleosynthesis (BBN). This provides a unique correlation between collider signal and the post-inflationary dynamics of the Universe within single-field inflationary models. |
| title | Lepton collider as a window to reheating via freezing in dark matter detection. Part II |
| topic | High Energy Physics - Phenomenology General Relativity and Quantum Cosmology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2410.18198 |