Communication Dans Un Congrès Année : 2022

Search for a Vector Like Quark T' decaying into quark top and Higgs boson in a dileptonic same sign final state with the CMS experiment at LHC

Résumé

In 2012: completion of the Standard Model (SM) with the discovery of Higgs boson. -Mass of 125 GeV in natural units (n.u.) (~130 times the proton mass) problematic because the perturbative corrections make this mass divergent. Hierarchy problem! How do we fix this issue? Adding a new particle in the model! -Vector-Like Quark (VLQ) T': particle (both quark and vector) whose interaction with the Higgs boson would cancel the corrections and solve the hierarchy problem.

-Higgs boson mass at 125 GeV. T' mass around 1 TeV (13 TeV in the center of mass of the LHC for 2016-2018). We assume that the T' mass is 700 GeV. T' is highly unstable: how can we observe it? T' production Benjamin Blancon JRJC BSM 10.25.22 Single T' production:

-quark q-antiquark q' interaction. W/Z boson. -gluon g-quark b interaction.

Quark q". -W/Z boson-quark q" interaction. VLQ T'.

At primary vertex (PV), three modes for T' decay:

-T' W boson + top quark (50%). -T' Z boson + top quark (25%).

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in2p3-04908019 , version 1 (23-01-2025)

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  • HAL Id : in2p3-04908019 , version 1

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Benjamin Blancon. Search for a Vector Like Quark T' decaying into quark top and Higgs boson in a dileptonic same sign final state with the CMS experiment at LHC. Journées de Rencontre Jeunes Chercheurs 2022, Oct 2022, La Rivière in Saint-Jean-de-Monts, France. ⟨in2p3-04908019⟩
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