Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at √s= 8TeV
par Khachatryan, Vardan;Caillol, Cécile 
;Clerbaux, Barbara ;De Lentdecker, Gilles ;Delannoy, Hugo ;Barria, Patrizia ;Dobur, Didar ;Fasanella, Giuseppe ;Favart, Laurent ;Gay, Arnaud ;Grebenyuk, Anastasia ;Leonard, Alexandre ;Pernie, Luca ;Randle-Conde, Aidan Sean ;Reis, Thomas ;Seva, Tomislav ;Thomas, Laurent ;Vander Velde, Catherine ;Vanlaer, Pascal ;Wang, Jian ;Zenoni, Florian ; [et al.]
Référence The Journal of high energy physics, 2015, 9, 201
Publication Publié, 2015
;Clerbaux, Barbara ;De Lentdecker, Gilles ;Delannoy, Hugo ;Barria, Patrizia ;Dobur, Didar ;Fasanella, Giuseppe ;Favart, Laurent ;Gay, Arnaud ;Grebenyuk, Anastasia ;Leonard, Alexandre ;Pernie, Luca ;Randle-Conde, Aidan Sean ;Reis, Thomas ;Seva, Tomislav ;Thomas, Laurent ;Vander Velde, Catherine ;Vanlaer, Pascal ;Wang, Jian ;Zenoni, Florian ; [et al.]Référence The Journal of high energy physics, 2015, 9, 201
Publication Publié, 2015
Article révisé par les pairs
| Résumé : | A search for pair production of neutral color-octet weak-triplet scalar particles (Θ0) is performed in processes where one Θ0 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 √s = 8TeV. 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 Θ0 mass. The 95% confidence level lower bounds on the Θ0 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. |
