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	Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev
	Sirunyan, A. M.1; Sirunyan, A. M.; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2
刊名	Physical review d
	2017-08-22
卷号	96期号:3页码:31
ISSN号	2470-0010
DOI	10.1103/physrevd.96.032002
通讯作者	Sirunyan, a. m.()
英文摘要	A measurement of the top quark mass (m-t) in the dileptonic t (t) over bar decay channel is performed using data from proton-proton collisions at a center-of-mass energy of 8 tev. the data was recorded by the cms experiment at the lhc and corresponds to an integrated luminosity of 19.7 +/- 0.5 fb(-1). events are selected with two oppositely charged leptons (l = e, mu) and two jets identified as originating from b quarks. the analysis is based on three kinematic observables whose distributions are sensitive to the value of mt. an invariant mass observable, m-bl, and a "stransverse mass" observable, m-t2, are employed in a simultaneous fit to determine the value of m-t and an overall jet energy scale factor (jsf). a complementary approach is used to construct an invariant mass observable, m-blv, that is combined with m-t2 to measure m-t. the shapes of the observables, along with their evolutions in m-t and jsf, are modeled by a nonparametric gaussian process regression technique. the sensitivity of the observables to the value of m-t is investigated using a fisher information density method. the top quark mass is measured to be 172.22 +/- 0.18(stat)(-0.93)(+0.89) (syst) gev.
WOS关键词	TEVATRON
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000408116900001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177008
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.Univ Catholic Louvain, Louvain La Neuve, Belgium 10.Univ Mons, Mons, Belgium
推荐引用方式 GB/T 7714	Sirunyan, A. M.,Sirunyan, A. M.,Tumasyan, A.,et al. Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev[J]. Physical review d,2017,96(3):31.
APA	Sirunyan, A. M..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,...&Ahmad, A..(2017).Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev.Physical review d,96(3),31.
MLA	Sirunyan, A. M.,et al."Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev".Physical review d 96.3(2017):31.

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