Search for a vector-like quark T′→ tH via the diphoton decay mode of the Higgs boson in proton-proton collisions at √s=13 TeV

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Küçük Resim

Tarih

2023

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Yayıncı

Springer

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

A search for the electroweak production of a vector-like quark T, decaying to a top quark and a Higgs boson is presented. The search is based on a sample of proton-proton collision events recorded at the LHC at root s = 13 TeV, corresponding to an integrated luminosity of 138 fb(-1). This is the first T ' search that exploits the Higgs boson decay to a pair of photons. For narrow isospin singlet T ' states with masses up to 1.1 TeV, the excellent diphoton invariant mass resolution of 1-2% results in an increased sensitivity compared to previous searches based on the same production mechanism. The electroweak production of a T ' quark with mass up to 960 GeV is excluded at 95% confidence level, assuming a coupling strength kappa(T) = 0.25 and a relative decay width Gamma/M-T '< 5%.

Açıklama

Anahtar Kelimeler

Beyond Standard Model, Hadron-Hadron Scattering, Top Physics

Kaynak

Journal of High Energy Physics

WoS Q Değeri

Q1

Scopus Q Değeri

Q2

Cilt

Sayı

9

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