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	Search for direct top squark pair production in events with a higgs or z boson, and missing transverse momentum in root s=13 tev pp collisions with the atlas detector
	Aaboud, M.197,198; collaboration, A. T. L. A. S.; Aad, G.127,128; Abbott, B.159; Abdinov, O.15; Abeloos, B.163; Abidi, S. H.229; AbouZeid, O. S.201; Abraham, N. L.218; Abramowicz, H.222
刊名	Journal of high energy physics
	2017-08-01
期号	8页码:46
关键词	Beyond standard model Hadron-hadron scattering (experiments) Higgs physics
ISSN号	1029-8479
DOI	10.1007/jhep08(2017)006
通讯作者	Aaboud, m.()
英文摘要	A search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a z boson or a pair of jets compatible with a standard model (sm) higgs boson (h) is presented. requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from b-quarks are imposed to target the other decay products of the top squark pair. the analysis is performed using proton-proton collision data at root s = 13 tev collected with the atlas detector at the lhc in 20152016, corresponding to an integrated luminosity of 36.1 fb(-1). no excess is observed in the data with respect to the sm predictions. the results are interpreted in two sets of models. in the first set, direct production of pairs of lighter top squarks ((t) over tilde (1)) with long decay chains involving z or higgs bosons is considered. the second set includes direct pair production of the heavier top squark pairs ((t) over tilde (2)) decaying via (t) over tilde (2) -> z (t) over tilde (1) or (t) over tilde (2) -> h (t) over tilde (1). the results exclude at 95% confidence level (t) over tilde (2) and (t) over tilde (1) masses up to about 800 gev, extending the exclusion region of supersymmetric parameter space covered by previous lhc searches.
WOS关键词	HADRON COLLIDERS ; GLUINO PRODUCTION ; SUPERSYMMETRY ; PARTICLE ; EXTENSION
WOS研究方向	Physics
WOS类目	Physics, Particles & Fields
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000406886200006
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176983
专题	高能物理研究所
通讯作者	Aaboud, M.
作者单位	1.Univ Adelaide, Dept Phys, Adelaide, SA, Australia 2.SUNY Albany, Dept Phys, Albany, NY USA 3.Univ Alberta, Dept Phys, Edmonton, AB, Canada 4.Ankara Univ, Dept Phys, Ankara, Turkey 5.Istanbul Aydin Univ, Istanbul, Turkey 6.TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey 7.CNRS, IN2P3, LAPP, Annecy Le Vieux, France 8.Univ Savoie Mont Blanc, Annecy Le Vieux, France 9.Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA 10.Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
推荐引用方式 GB/T 7714	Aaboud, M.,collaboration, A. T. L. A. S.,Aad, G.,et al. Search for direct top squark pair production in events with a higgs or z boson, and missing transverse momentum in root s=13 tev pp collisions with the atlas detector[J]. Journal of high energy physics,2017(8):46.
APA	Aaboud, M..,collaboration, A. T. L. A. S..,Aad, G..,Abbott, B..,Abdinov, O..,...&Hadef, A..(2017).Search for direct top squark pair production in events with a higgs or z boson, and missing transverse momentum in root s=13 tev pp collisions with the atlas detector.Journal of high energy physics(8),46.
MLA	Aaboud, M.,et al."Search for direct top squark pair production in events with a higgs or z boson, and missing transverse momentum in root s=13 tev pp collisions with the atlas detector".Journal of high energy physics .8(2017):46.

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