Show simple item record

dc.contributor.authorKhachatryan, A.M.
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.R.
dc.contributor.authorAdam, Wolfgang
dc.contributor.authorBergauer, Thomas
dc.contributor.authorDragicevic, Marko
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorKalakhety, Himali
dc.contributor.authorYumiceva, Francisco
dc.date.accessioned2016-07-29T20:23:58Z
dc.date.available2016-07-29T20:23:58Z
dc.date.issued2015-06-17
dc.identifier.citationThe CMS collaboration, Khachatryan, V., Sirunyan, A.M. et al. J. High Energ. Phys. (2015) 2015: 121. doi:10.1007/JHEP06(2015)121en_US
dc.identifier.urihttp://hdl.handle.net/11141/958
dc.description.abstractA search is presented for particle dark matter produced in association with a pair of top quarks in pp collisions at a centre-of-mass energy of √s = 8 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 19.7 fb−1. This search requires the presence of one lepton, multiple jets, and large missing transverse energy. No excess of events is found above the SM expectation, and upper limits are derived on the production cross section. Interpreting the findings in the context of a scalar contact interaction between fermionic dark matter particles and top quarks, lower limits on the interaction scale are set. These limits are also interpreted in terms of the dark matter-nucleon scattering cross sections for the spin-independent scalar operator and they complement direct searches for dark matter particles in the low mass region.en_US
dc.language.isoen_USen_US
dc.rightsThe Journal of High Energy Physics (JHEP) is an open-access journal funded by SCOAP3 (scoap3.org) and licensed under CC BY 4.0.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.titleSearch for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at √s = 8 TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/JHEP06(2015)121


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

The Journal of High Energy Physics (JHEP) is an open-access journal funded by SCOAP3 (scoap3.org) and licensed under CC BY 4.0.
Except where otherwise noted, this item's license is described as The Journal of High Energy Physics (JHEP) is an open-access journal funded by SCOAP3 (scoap3.org) and licensed under CC BY 4.0.