IHEP OpenIR  > 实验物理中心
A search for t t ¯ resonances using lepton-plus-jets events in proton-proton collisions at s = 8 TeV with the ATLAS detector
ATLAS Collaboration
2015
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2015期号:8页码:148
文章类型Article
摘要A search for new particles that decay into top quark pairs is reported. The search is performed with the ATLAS experiment at the LHC using an integrated luminosity of 20.3 fb(-1) of proton-proton collision data collected at a centre-of-mass energy of root s = 8TeV. The lepton-plus-jets final state is used, where the top pair decays to W (+) bW(-)(b) over bar, with one W boson decaying leptonically and the other hadronically. The invariant mass spectrum of top quark pairs is examined for local excesses or deficits that are inconsistent with the Standard Model predictions. No evidence for a top quark pair resonance is found, and 95% confidence-level limits on the production rate are determined for massive states in benchmark models. The upper limits on the cross-section times branching ratio of a narrow Z' boson decaying to top pairs range from 4.2 pb to 0.03 pb for resonance masses from 0.4 TeV to 3.0 TeV. A narrow leptophobic topcolour Z' boson with mass below 1.8 TeV is excluded. Upper limits are set on the cross-section times branching ratio for a broad colour-octet resonance with Gamma/m = 15% decaying to tt. These range from 4.8 pb to 0.03 pb for masses from 0.4 TeV to 3.0 TeV. A Kaluza-Klein excitation of the gluon in a Randall-Sundrum model is excluded for masses below 2.2 TeV.
关键词Exotics Hadron-Hadron Scattering Top physics
学科领域Physics
DOI10.1007/JHEP08(2015)148
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000363532500006
引用统计
被引频次:29[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/311005/228961
专题实验物理中心
推荐引用方式
GB/T 7714
ATLAS Collaboration. A search for t t ¯ resonances using lepton-plus-jets events in proton-proton collisions at s = 8 TeV with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(8):148.
APA ATLAS Collaboration.(2015).A search for t t ¯ resonances using lepton-plus-jets events in proton-proton collisions at s = 8 TeV with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS,2015(8),148.
MLA ATLAS Collaboration."A search for t t ¯ resonances using lepton-plus-jets events in proton-proton collisions at s = 8 TeV with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS 2015.8(2015):148.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
5010.pdf(1675KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[ATLAS Collaboration]的文章
百度学术
百度学术中相似的文章
[ATLAS Collaboration]的文章
必应学术
必应学术中相似的文章
[ATLAS Collaboration]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。