Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at root s=13 TeV | |
CMS Collaboration | |
刊名 | JOURNAL OF HIGH ENERGY PHYSICS |
2017 | |
期号 | 11页码:85 |
关键词 | Hadron-Hadron scattering (experiments) Heavy quark production vector-like quarks |
ISSN号 | 1029-8479 |
DOI | 10.1007/JHEP11(2017)085 |
文献子类 | Article |
英文摘要 | A search for pair production of massive vector-like T and B quarks in proton-proton collisions at root s = 13 TeV is presented. The data set was collected in 2015 by the CMS experiment at the LHC and corresponds to an integrated luminosity of up to 2.6 fb(-1). The T and B quarks are assumed to decay through three possible channels into a heavy boson (either a W, Z or Higgs boson) and a third generation quark. This search is performed in final states with one charged lepton and several jets, exploiting techniques to identify W or Higgs bosons decaying hadronically with large transverse momenta. No excess over the predicted standard model background is observed. Upper limits at 95% confidence level on the T quark pair production cross section are set that exclude T quark masses below 860 GeV in the singlet, and below 830 GeV in the doublet branching fraction scenario. For other branching fraction combinations with B (T -> tH) + B(T -> bW) >= 0.4, lower limits on the T quark range from 790 to 940 GeV. Limits are also set on pair production of singlet vector-like B quarks, which can be excluded up to a mass of 730 GeV. The techniques showcased here for understanding highly-boosted final states are important as the sensitivity to new particles is extended to higher masses. |
WOS关键词 | HADRON COLLIDERS ; CROSS-SECTION ; PP COLLISIONS ; PLUS PLUS ; BOSON ; ENERGIES ; FERMION ; MODELS ; LHC |
WOS研究方向 | Physics |
语种 | 英语 |
WOS记录号 | WOS:000415660000001 |
内容类型 | 期刊论文 |
源URL | [http://ir.ihep.ac.cn/handle/311005/284577] |
专题 | 高能物理研究所_粒子天体物理中心 |
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 | CMS Collaboration. Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at root s=13 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2017(11):85. |
APA | CMS Collaboration.(2017).Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at root s=13 TeV.JOURNAL OF HIGH ENERGY PHYSICS(11),85. |
MLA | CMS Collaboration."Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at root s=13 TeV".JOURNAL OF HIGH ENERGY PHYSICS .11(2017):85. |
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