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Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at vs=8 TeV

Abstract: A search for pair production of neutral color-octet weak-triplet scalar particles (T0) is performed in processes where one T0 decays to a pair of b quark jets and the other to a Z boson plus a jet, with the Z boson decaying to a pair of electrons or muons. The search is performed with data collected by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 19.7 fb-1 of proton-proton collisions at vs=8 TeV. The number of observed events is found to be in agreement with the standard model predictions. The 95% confidence level upper limit on the product of the cross section and branching fraction is obtained as a function of the T0 mass. The 95% confidence level lower bounds on the T0 mass are found to be 623 and 426 GeV, for two different octo-triplet theoretical scenarios. These are the first direct experimental bounds on particles predicted by the octo-triplet model.

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

 Fuente: Journal of High Energy Physics, Vol. 2015, Num. 9, Art. Num. 201

Editorial: Springer Verlag

 Fecha de publicación: 01/09/2015

Nº de páginas: 37

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP09(2015)201

ISSN: 1126-6708,1029-8479

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1007/JHEP09(2015)201