Research Output | Dar Al-hikmah Library | IIUM Only
A search is performed for dark matter particles produced in association with a top quark pair in protonproton collisions at ffiffi s p ¼ 13 TeV. The data correspond to an integrated luminosity of 35.9 fb−1 recorded by the CMS detector at the LHC. No significant excess over the standard model expectation is observed. The results are interpreted u