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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

Abstract: A search for the electroweak production of a vector-like quark T0, 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 p s = 13TeV, corresponding to an integrated luminosity of 138 fb-1. This is the first T0 search that exploits the Higgs boson decay to a pair of photons. For narrow isospin singlet T0 states with masses up to 1.1TeV, 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 T0 quark with mass up to 960 GeV is excluded at 95% confidence level, assuming a coupling strength KT = 0.25 and a relative decay width /MT0 < 5%.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Tumasyan A., Adam W., Andrejkovic J.W., Bergauer T., Chatterjee S., Damanakis K., Dragicevic M., Escalante Del Valle A., Hussain P.S., Jeitler M., Krammer N., Lechner L., Liko D., Mikulec I., Paulitsch P., Pitters F.M., Schieck J., Schöfbeck R., Schwarz D., Sonawane M., Templ S., Waltenberger W., Wulz C.E., Darwish M.R., Janssen T., Kello T., Rejeb Sfar H., Van Mechelen P., Bols E.S., D’Hondt J., De Moor A., Delcourt M., El Faham H.

 Fuente: Journal of High Energy Physics, 2023, 57

Editorial: Springer Verlag

 Fecha de publicación: 01/09/2023

Nº de páginas: 40

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP09(2023)057

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP09(2023)057