Explaining the $γγ+X$ Excesses at $\approx$151.5 GeV via the Drell-Yan Production of a Higgs Triplet
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866914662323322880 |
|---|---|
| author | Ashanujjaman, Saiyad Banik, Sumit Coloretti, Guglielmo Crivellin, Andreas Maharathy, Siddharth P. Mellado, Bruce |
| author_facet | Ashanujjaman, Saiyad Banik, Sumit Coloretti, Guglielmo Crivellin, Andreas Maharathy, Siddharth P. Mellado, Bruce |
| contents | The multi-lepton anomalies and searches for the associated production of a narrow resonance indicate the existence of a $\approx$151 GeV Higgs with a significance of $>5σ$ and $>3.9σ$, respectively. On the one hand, these anomalies require a sizable branching fraction of the new scalar to $WW$, while on the other hand, no $ZZ$ signal at this mass has been observed. This suggests that the new boson is the neutral component of an $SU(2)_L$ triplet with zero hypercharge. This field leads to a positive definite shift in the $W$ mass, as preferred by the current global fit, and is produced via the Drell-Yan process $pp\to W^*\to Δ^0Δ^\pm$. We use the side-bands of the ATLAS analysis \cite{ATLAS:2023omk} of the associated production of the Standard Model Higgs in the di-photon channel to search for this production mode of the triplet. Since the dominant decays of $Δ^\pm$ depend only on its mass, the effect in the 22 signal categories considered by ATLAS is completely correlated. We find that the ones most sensitive to the Drell-Yan production of the triplet Higgs show consistent excesses at a mass of $\approx$151.5 GeV. Combining these channels in a likelihood ratio test, a non-zero Br$[Δ^0\toγγ] = 0.66\%$ is preferred by $\approx$3$σ$, supporting our conjecture. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_00101 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Explaining the $γγ+X$ Excesses at $\approx$151.5 GeV via the Drell-Yan Production of a Higgs Triplet Ashanujjaman, Saiyad Banik, Sumit Coloretti, Guglielmo Crivellin, Andreas Maharathy, Siddharth P. Mellado, Bruce High Energy Physics - Phenomenology High Energy Physics - Experiment The multi-lepton anomalies and searches for the associated production of a narrow resonance indicate the existence of a $\approx$151 GeV Higgs with a significance of $>5σ$ and $>3.9σ$, respectively. On the one hand, these anomalies require a sizable branching fraction of the new scalar to $WW$, while on the other hand, no $ZZ$ signal at this mass has been observed. This suggests that the new boson is the neutral component of an $SU(2)_L$ triplet with zero hypercharge. This field leads to a positive definite shift in the $W$ mass, as preferred by the current global fit, and is produced via the Drell-Yan process $pp\to W^*\to Δ^0Δ^\pm$. We use the side-bands of the ATLAS analysis \cite{ATLAS:2023omk} of the associated production of the Standard Model Higgs in the di-photon channel to search for this production mode of the triplet. Since the dominant decays of $Δ^\pm$ depend only on its mass, the effect in the 22 signal categories considered by ATLAS is completely correlated. We find that the ones most sensitive to the Drell-Yan production of the triplet Higgs show consistent excesses at a mass of $\approx$151.5 GeV. Combining these channels in a likelihood ratio test, a non-zero Br$[Δ^0\toγγ] = 0.66\%$ is preferred by $\approx$3$σ$, supporting our conjecture. |
| title | Explaining the $γγ+X$ Excesses at $\approx$151.5 GeV via the Drell-Yan Production of a Higgs Triplet |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2402.00101 |