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Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at root s=8 TeV
CMS Collaboration
2015
发表期刊PHYSICAL REVIEW D
卷号91期号:5页码:52009
文章类型Article
摘要A search for resonances and quantum black holes is performed using the dijet mass spectra measured in proton-proton collisions at root s = 8 TeV with the CMS detector at the LHC. The data set corresponds to an integrated luminosity of 19.7 fb(-1). In a search for narrow resonances that couple to quark-quark, quark-gluon, or gluon-gluon pairs, model-independent upper limits, at 95% confidence level, are obtained on the production cross section of resonances, with masses above 1.2 TeV. When interpreted in the context of specific models the limits exclude string resonances with masses below 5.0 TeV; excited quarks below 3.5 TeV; scalar diquarks below 4.7 TeV; W' bosons below 1.9 TeV or between 2.0 and 2.2 TeV; Z' bosons below 1.7 TeV; and Randall-Sundrum gravitons below 1.6 TeV. A separate search is conducted for narrow resonances that decay to final states including b quarks. The first exclusion limit is set for excited b quarks, with a lower mass limit between 1.2 and 1.6 TeV depending on their decay properties. Searches are also carried out for wide resonances, assuming for the first time width-to-mass ratios up to 30%, and for quantum black holes with a range of model parameters. The wide resonance search excludes axigluons and colorons with mass below 3.6 TeV, and color-octet scalars with mass below 2.5 TeV. Lower bounds between 5.0 and 6.3 TeV are set on the masses of quantum black holes.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.91.052009
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000351342800001
引用统计
被引频次:107[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/311005/228229
专题粒子天体物理中心
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CMS Collaboration. Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at root s=8 TeV[J]. PHYSICAL REVIEW D,2015,91(5):52009.
APA CMS Collaboration.(2015).Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at root s=8 TeV.PHYSICAL REVIEW D,91(5),52009.
MLA CMS Collaboration."Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at root s=8 TeV".PHYSICAL REVIEW D 91.5(2015):52009.
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