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	Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev
	Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2; Flechl, M.2
刊名	Journal of high energy physics
	2017-10-26
期号	10页码:48
关键词	Dark matter Hadron-hadron scattering (experiments) Higgs physics Beyond standard model Supersymmetry
ISSN号	1029-8479
DOI	10.1007/jhep10(2017)180
通讯作者	Sirunyan, a. m.()
英文摘要	A search for dark matter is performed looking for events with large missing transverse momentum and a higgs boson decaying either to a pair of bottom quarks or to a pair of photons. the data from proton-proton collisions at a center-of-mass energy of 13tev, collected in 2015 with the cms detector at the lhc, correspond to an integrated luminosity of 2.3 fb(-1). results are interpreted in the context of a z'-two-higgs-doublet model, where the gauge symmetry of the standard model is extended by a u(1) z' group, with a new massive z' gauge boson, and the higgs sector is extended with four additional higgs bosons. in this model, a high-mass resonance z' decays into a pseudoscalar boson a and a light sm-like scalar higgs boson, and the a decays to a pair of dark matter particles. no signi fi cant excesses are observed over the background prediction. combining results from the two decay channels yields exclusion limits in the signal cross section in the m(z')-m(a) phase space. for example, the observed data exclude the z' mass range from 600 to 1860 gev, for z' coupling strength gz' = 0: 8, the coupling of a with dark matter particles g(x) = 1, the ratio of the vacuum expectation values tan beta = 1, and m(a) = 300gev. the results of this analysis are valid for any dark matter particle mass below 100 gev.
WOS关键词	ATLAS DETECTOR ; LHC ; PARTICLE
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:000414813100001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176920
专题	高能物理研究所
通讯作者	Sirunyan, A. M.
作者单位	1.Yerevan Phys Inst, Yerevan, Armenia 2.Inst Hochenergiephys, Vienna, Austria 3.Inst Nucl Problems, Minsk, Byelarus 4.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 5.Univ Antwerp, Antwerp, Belgium 6.Vrije Univ Brussel, Brussels, Belgium 7.Univ Libre Bruxelles, Brussels, Belgium 8.Univ Ghent, Ghent, Belgium 9.Catholic Univ Louvain, Louvain La Neuve, Belgium 10.Univ Mons, Mons, Belgium
推荐引用方式 GB/T 7714	Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev[J]. Journal of high energy physics,2017(10):48.
APA	Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,Bergauer, T..,...&Hassan, Q..(2017).Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev.Journal of high energy physics(10),48.
MLA	Sirunyan, A. M.,et al."Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev".Journal of high energy physics .10(2017):48.

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