Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at root s=8 TeV

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at root s=8 TeV
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2015
卷号	2015 期号:6 页码:121
关键词	Hadron-Hadron Scattering Beyond Standard Model
英文摘要	A 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 root s = 8TeV. 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.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:000358315900001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228584]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	CMS Collaboration. Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at root s=8 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(6):121.
APA	CMS Collaboration.(2015).Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at root s=8 TeV.JOURNAL OF HIGH ENERGY PHYSICS,2015(6),121.
MLA	CMS Collaboration."Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at root s=8 TeV".JOURNAL OF HIGH ENERGY PHYSICS 2015.6(2015):121.