$SU(2)_L$ triplet scalar as the origin of the 95 GeV excess?
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866914410340024320 |
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| author | Ashanujjaman, Saiyad Banik, Sumit Coloretti, Guglielmo Crivellin, Andreas Mellado, Bruce Mulaudzi, Anza-Tshilidzi |
| author_facet | Ashanujjaman, Saiyad Banik, Sumit Coloretti, Guglielmo Crivellin, Andreas Mellado, Bruce Mulaudzi, Anza-Tshilidzi |
| contents | We explore the possibility that an $SU(2)_L$ triplet scalar with hypercharge $Y=0$ is the origin of the $95\,$GeV diphoton excess. For a small mixing angle with the Standard Model Higgs, its neutral component has naturally a sizable branching ratio to $γγ$ such that its Drell-Yan production via $pp\to W^*\to H H^\pm$ is sufficient to obtain the desired signal strength, where $H^\pm$ is the charged Higgs component of the triplet. The predictions of this setup are: 1) The $γγ$ signal has a $p_T$ spectrum different from gluon fusion but similar to associated production. 2) Photons are produced in association with tau leptons and jets, but generally do not fall into the vector-boson fusion category. 3) The existence of a charged Higgs with $m_{H^\pm}\approx\!(95\pm5)\,$GeV leading to $σ(pp\to ττνν)\approx0.4\,$pb, which is of the same level as the current limit and can be discovered with Run 3 data. 4) A positive definite shift in the $W$ mass as suggested by the current global electroweak fit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_15722 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | $SU(2)_L$ triplet scalar as the origin of the 95 GeV excess? Ashanujjaman, Saiyad Banik, Sumit Coloretti, Guglielmo Crivellin, Andreas Mellado, Bruce Mulaudzi, Anza-Tshilidzi High Energy Physics - Phenomenology High Energy Physics - Experiment We explore the possibility that an $SU(2)_L$ triplet scalar with hypercharge $Y=0$ is the origin of the $95\,$GeV diphoton excess. For a small mixing angle with the Standard Model Higgs, its neutral component has naturally a sizable branching ratio to $γγ$ such that its Drell-Yan production via $pp\to W^*\to H H^\pm$ is sufficient to obtain the desired signal strength, where $H^\pm$ is the charged Higgs component of the triplet. The predictions of this setup are: 1) The $γγ$ signal has a $p_T$ spectrum different from gluon fusion but similar to associated production. 2) Photons are produced in association with tau leptons and jets, but generally do not fall into the vector-boson fusion category. 3) The existence of a charged Higgs with $m_{H^\pm}\approx\!(95\pm5)\,$GeV leading to $σ(pp\to ττνν)\approx0.4\,$pb, which is of the same level as the current limit and can be discovered with Run 3 data. 4) A positive definite shift in the $W$ mass as suggested by the current global electroweak fit. |
| title | $SU(2)_L$ triplet scalar as the origin of the 95 GeV excess? |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2306.15722 |