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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Dosyalar
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
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