Explanation of the Hints for a 95 GeV Higgs Boson within a 2-Higgs Doublet Model
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| Format: | Preprint |
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2023
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| _version_ | 1866914782142005248 |
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| author | Belyaev, Alexander Benbrik, Rachid Boukidi, Mohammed Chakraborti, Manimala Moretti, Stefano Semlali, Souad |
| author_facet | Belyaev, Alexander Benbrik, Rachid Boukidi, Mohammed Chakraborti, Manimala Moretti, Stefano Semlali, Souad |
| contents | We suggest an explanation for and explore the consequences of the excess around 95 GeV in the di-photon and di-tau invariant mass distributions recently reported by the CMS collaboration at the Large Hadron Collider (LHC), together with the discrepancy that has long been observed at the Large Electron-Positron (LEP) collider in the $b\bar b$ invariant mass. Interestingly, the most recent findings announced by the ATLAS collaboration do not contradict, or even support, these intriguing observations. Their search in the di-photon final state similarly reveals an excess of events within the same mass range, albeit with a bit lower significance, thereby corroborating and somewhat reinforcing the observations made by CMS. We demonstrate that the lightest CP-even Higgs boson in the general 2-Higgs Doublet Model (2HDM) Type-III can explain simultaneously the observed excesses at approximately 1.3 $σ$ C.L. while satisfying up-to-date theoretical and experimental constraints. Moreover, the 2HDM Type-III predicts an excess in the $pp\to t\bar t H_{\rm SM}$ production channel of the 125 GeV Higgs boson, $H_{\rm SM}$. This effect is caused by a up to 12\% enhancement of the $H_{\rm SM}tt$ Yukawa coupling in comparison to that predicted by the Standard Model. Such an effect can be tested at the High Luminosity LHC (HL-LHC), which can either discover or exclude the scenario we suggest. This unique characteristic of the 2HDM Type-III makes this scenario with the 95 GeV resonance very attractive for further theoretical and experimental investigations at the (HL-)LHC and future colliders. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2306_09029 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Explanation of the Hints for a 95 GeV Higgs Boson within a 2-Higgs Doublet Model Belyaev, Alexander Benbrik, Rachid Boukidi, Mohammed Chakraborti, Manimala Moretti, Stefano Semlali, Souad High Energy Physics - Phenomenology High Energy Physics - Experiment We suggest an explanation for and explore the consequences of the excess around 95 GeV in the di-photon and di-tau invariant mass distributions recently reported by the CMS collaboration at the Large Hadron Collider (LHC), together with the discrepancy that has long been observed at the Large Electron-Positron (LEP) collider in the $b\bar b$ invariant mass. Interestingly, the most recent findings announced by the ATLAS collaboration do not contradict, or even support, these intriguing observations. Their search in the di-photon final state similarly reveals an excess of events within the same mass range, albeit with a bit lower significance, thereby corroborating and somewhat reinforcing the observations made by CMS. We demonstrate that the lightest CP-even Higgs boson in the general 2-Higgs Doublet Model (2HDM) Type-III can explain simultaneously the observed excesses at approximately 1.3 $σ$ C.L. while satisfying up-to-date theoretical and experimental constraints. Moreover, the 2HDM Type-III predicts an excess in the $pp\to t\bar t H_{\rm SM}$ production channel of the 125 GeV Higgs boson, $H_{\rm SM}$. This effect is caused by a up to 12\% enhancement of the $H_{\rm SM}tt$ Yukawa coupling in comparison to that predicted by the Standard Model. Such an effect can be tested at the High Luminosity LHC (HL-LHC), which can either discover or exclude the scenario we suggest. This unique characteristic of the 2HDM Type-III makes this scenario with the 95 GeV resonance very attractive for further theoretical and experimental investigations at the (HL-)LHC and future colliders. |
| title | Explanation of the Hints for a 95 GeV Higgs Boson within a 2-Higgs Doublet Model |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2306.09029 |