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Scrutinizing the 95–100 GeV di-tau excess in the top associated process

Iguro, Syuhei 1,2; Kitahara, Teppei ; Omura, Yuji
1 Institut für Theoretische Teilchenphysik (TTP), Karlsruher Institut für Technologie (KIT)
2 Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)

Abstract:

Recently, the CMS collaboration has reported a di-tau excess with a local significance of 2.6-3.1$\sigma$ where the invariant mass is $m_{\tau\tau}=95-100$ GeV. This excess can be interpreted as a light scalar boson that couples to the third generation fermions, particularly top and $\tau$. Based on the simplest model that can account for the CMS di-tau excess, we evaluate experimental sensitivities to the additional light resonance, using the results reported by the ATLAS collaboration. We see that a search for the top-quark associated production of the SM Higgs boson that decays into $\tau\bar\tau$ sets a strong model-independent limit. We also find that the CP-even scalar interpretation of the light resonance is excluded by the ATLAS results, while the CP-odd interpretation is not.


Volltext §
DOI: 10.5445/IR/1000153436
Veröffentlicht am 02.12.2022
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Forschungsbericht/Preprint
Publikationsjahr 2022
Sprache Englisch
Identifikator KITopen-ID: 1000153436
HGF-Programm 51.11.01 (POF IV, LK 01) Teilchenphysik
Umfang 21 S.
Vorab online veröffentlicht am 21.11.2022
Schlagwörter Large Hadron Collider, New Light Particle, Top-Associated production
Nachgewiesen in arXiv
Dimensions
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