Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at s√=8 TeV
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Issue Date
2015-09-29Author
Baringer, Philip S.
Bean, Alice
Murray, Michael J.
Sanders, Stephen J.
Publisher
Springer Verlag
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
Open Access, Copyright CERN, for the benefit of the CMS Collaboration. Article funded by SCOAP3.
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Show full item recordAbstract
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√=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 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.
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Citation
Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., … Erö, J. (2015). Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at s√=8 TeV. J. High Energ. Phys., 2015(9). doi:10.1007/jhep09(2015)201
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