Measurement of the W-boson mass in pp collisions at root s=7 TeV with the ATLAS detector

doi:10.1140/epjc/s10052-017-5475-4

	Measurement of the W-boson mass in pp collisions at root s=7 TeV with the ATLAS detector
	ATLAS Collaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	2018
卷号	78 期号:2 页码:110
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-017-5475-4
文献子类	Article
英文摘要	A measurement of the mass of the W boson is presented based on proton-proton collision data recorded in 2011 at a centre-of-mass energy of 7 TeV with the ATLAS detector at the LHC, and corresponding to 4.6 fb(-1) of integrated luminosity. The selected data sample consists of 7.8 x 10(6) candidates in the W -> mu nu channel and 5.9 x 10(6) candidates in the W -> e nu channel. The W-boson mass is obtained from template fits to the reconstructed distributions of the charged lepton transverse momentum and of the W boson transverse mass in the electron and muon decay channels, yielding m(W) = 80370 +/- 7 (stat.) +/- 11(exp. syst.) +/- 14 (mod. syst.) MeV = 80370 +/- 19 MeV, where the first uncertainty is statistical, the second corresponds to the experimental systematic uncertainty, and the third to the physics-modelling systematic uncertainty. A measurement of the mass difference between the W+ and W- bosons yields m(W+) - m(W-) = -29 +/- 28 MeV.
电子版国际标准刊号	1434-6052
WOS关键词	TRANSVERSE-MOMENTUM RESUMMATION ; CERN PBARP COLLIDER ; DRELL-YAN PROCESSES ; LEPTON PAIRS ; ELECTROWEAK MEASUREMENTS ; BROKEN SYMMETRIES ; HADRON-COLLISIONS ; WEAK-INTERACTIONS ; MONTE-CARLO ; WIDTH
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000424385500005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285611]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	ATLAS Collaboration. Measurement of the W-boson mass in pp collisions at root s=7 TeV with the ATLAS detector[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(2):110.
APA	ATLAS Collaboration.(2018).Measurement of the W-boson mass in pp collisions at root s=7 TeV with the ATLAS detector.EUROPEAN PHYSICAL JOURNAL C,78(2),110.
MLA	ATLAS Collaboration."Measurement of the W-boson mass in pp collisions at root s=7 TeV with the ATLAS detector".EUROPEAN PHYSICAL JOURNAL C 78.2(2018):110.