Evidence for the spin-0 nature of the Higgs boson using ATLAS data
ATLAS collaboration
刊名PHYSICS LETTERS B
2013
卷号726期号:1--3页码:120-144
关键词MASSLESS PARTICLES BROKEN SYMMETRIES LHC MASSES
学科分类Physics
DOI10.1016/j.physletb.2013.08.026
通讯作者Ammosov, VV (reprint author), State Res Ctr, Inst High Energy Phys, Protvino, Russia.
英文摘要Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on protonproton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin-parity J(P) = 0(+) hypothesis is compared with alternative hypotheses using the Higgs boson decays H -> gamma gamma, H -> ZZ* -> 4l and H -> WW* -> l nu l nu, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb(-1) collected at a centre-of-mass energy of root s = 8 TeV. For the H -> ZZ* -> 4l decay mode the dataset corresponding to an integrated luminosity of 4.6 fb(-1) collected at root s = 7 TeV is included. The data are compatible with the Standard Model J(P) = 0+ quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this Letter, namely some specific J(P) = 0(-), 1(+), 1(-), 2(+) models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the J(P) = 2(+) model, of the relative fractions of gluon-fusion and quark-antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000326482200015
引用统计
被引频次:266[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213621
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Evidence for the spin-0 nature of the Higgs boson using ATLAS data[J]. PHYSICS LETTERS B,2013,726(1--3):120-144.
APA ATLAS collaboration.(2013).Evidence for the spin-0 nature of the Higgs boson using ATLAS data.PHYSICS LETTERS B,726(1--3),120-144.
MLA ATLAS collaboration."Evidence for the spin-0 nature of the Higgs boson using ATLAS data".PHYSICS LETTERS B 726.1--3(2013):120-144.
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