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## Search for t¯tH production in the all-jet ?nal state in proton-proton collisions at ?s = 13TeV

Abstract: A search is presented for the associated production of a Higgs boson with a top quark pair in the all-jet ?nal state. Events containing seven or more jets are selected from a sample of proton-proton collisions at ?s = 13TeV collected with the CMS detector at the LHC in 2016, corresponding to an integrated luminosity of 35.9fb?1. To separate the t¯tH signal from the irreducible t¯t + b¯b background, the analysis assigns leading order matrix element signal and background probability densities to each event. A likelihoodratio statistic based on these probability densities is used to extract the signal. The results are provided in terms of an observed t¯tH signal strength relative to the standard model production cross section µ = ?/?SM, assuming a Higgs boson mass of 125GeV. The best ?t value is ? µ = 0.9±0.7(stat)±1.3(syst) = 0.9±1.5(tot), and the observed and expected upper limits are, respectively, µ < 3.8 and < 3.1 at 95% con?dence levels.

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

Fuente: Journal of High Energy Physics, Vol. 2018, Num. 06, Art. Num. 101

Editorial: Springer Verlag

Fecha de publicación: 20/06/2018

Nº de páginas: 46

Tipo de publicación: Artículo de Revista

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP06(2018)101

### Autores/as

SIRUNYAN, A. M.

PEDRO JOSE FERNANDEZ MANTECA

JUAN GARCIA FERRERO

ANDREA GARCIA ALONSO

MARIA AMPARO LOPEZ VIRTO

CEDRIC GERALD PRIEELS