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	Combined search for electroweak production of charginos and neutralinos in proton-proton collisions at root s=13 tev
	Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Ambrogi, F.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2
刊名	Journal of high energy physics
	2018-03-27
期号	3页码:47
关键词	Hadron-hadron scattering (experiments) Supersymmetry
ISSN号	1029-8479
DOI	10.1007/jhep03(2018)160
通讯作者	Sirunyan, a. m.()
英文摘要	A statistical combination of several searches for the electroweak production of charginos and neutralinos is presented. all searches use proton-proton collision data at a root s = 13 tev, recorded with the cms detector at the lhc in 2016 and corresponding to an integrated luminosity of 35.9 fb(-1). in addition to the combination of previous searches, a targeted analysis requiring three or more charged leptons (electrons or muons) is presented, focusing on the challenging scenario in which the difference in mass between the two least massive neutralinos is approximately equal to the mass of the z boson. the results are interpreted in simplified models of chargino-neutralino or neutralino pair production. for chargino-neutralino production, in the case when the lightest neutralino is massless, the combination yields an observed (expected) limit at the 95% confidence level on the chargino mass of up to 650 (570) gev, improving upon the individual analysis limits by up to 40 gev. if the mass difference between the two least massive neutralinos is approximately equal to the mass of the z boson in the chargino-neutralino model, the targeted search requiring three or more leptons obtains observed and expected exclusion limits of around 225 gev on the second neutralino mass and 125 gev on the lightest neutralino mass, improving the observed limit by about 60 gev in both masses compared to the previous cms result. in the neutralino pair production model, the combined observed (expected) exclusion limit on the neutralino mass extends up to 650-750 (550-750) gev, depending on the branching fraction assumed. this extends the observed exclusion achieved in the individual analyses by up to 200 gev. the combined result additionally excludes some intermediate gaps in the mass coverage of the individual analyses.
WOS关键词	SLEPTON-PAIR PRODUCTION ; HADRON COLLIDERS ; SUPERGAUGE TRANSFORMATIONS ; PP COLLISIONS ; SUPERSYMMETRY ; MODEL ; RESUMMATION ; EXTENSION ; INVARIANT ; NEUTRINO
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:000429614600001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178138
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.Univ Antwerp, Antwerp, Belgium 5.Vrije Univ Brussel, Brussels, Belgium 6.Univ Libre Bruxelles, Brussels, Belgium 7.Univ Ghent, Ghent, Belgium 8.Catholic Univ Louvain, Louvain, Belgium 9.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil 10.Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil
推荐引用方式 GB/T 7714	Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Combined search for electroweak production of charginos and neutralinos in proton-proton collisions at root s=13 tev[J]. Journal of high energy physics,2018(3):47.
APA	Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Ambrogi, F..,Asilar, E..,...&Oropeza Barrera, C..(2018).Combined search for electroweak production of charginos and neutralinos in proton-proton collisions at root s=13 tev.Journal of high energy physics(3),47.
MLA	Sirunyan, A. M.,et al."Combined search for electroweak production of charginos and neutralinos in proton-proton collisions at root s=13 tev".Journal of high energy physics .3(2018):47.

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