Search for Standard Model Production of Four Top Quarks in the Lepton + Jets Channel in pp Collisions at $\sqrt{s}$ = 8 TeV

Khachatryan, Vardan

doi:10.1007/JHEP11(2014)154

Title: Search for Standard Model Production of Four Top Quarks in the Lepton + Jets Channel in pp Collisions at $$\sqrt{s}$$ = 8 TeV

Journal Article · Thu Nov 27 00:00:00 EST 2014 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP11(2014)154· OSTI ID:1234849

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI) (Armenia). et al.

Our search is presented for standard model (SM) production of four top quarks (t¯tt¯t) in pp collisions in the lepton + jets channel. The data correspond to an integrated luminosity of 19.6 fb^-1 recorded at a centre-of-mass energy of 8 TeV with the CMS detector at the CERN LHC. The expected cross section for SM t¯tt¯t production is σ^SM_t¯tt¯t≈1fb. A combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal and large background. We determined that the data are consistent with expectations of the SM, and an upper limit of 32 fb is set at a 95% confidence level on the cross section for producing four top quarks in the SM, where a limit of 32 ± 17 fb is expected.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1234849

Report Number(s):: FERMILAB-PUB-14-366-CMS; CERN-PH-EP-2014-222; CMS-TOP-13-012; arXiv eprint number arXiv:1409.7339; TRN: US1500523

Journal Information:: Journal of High Energy Physics (Online), Vol. 2014, Issue 11; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 26 works

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Cited By (6)

Top-quark physics at the Large Hadron Collider Cristinziani, Markus; Mulders, Martijn Journal of Physics G: Nuclear and Particle Physics, Vol. 44, Issue 6 https://doi.org/10.1088/1361-6471/44/6/063001	journal	May 2017
Natural Alignment in the Two Higgs Doublet Model Bhupal Dev, P. S.; Pilaftsis, Apostolos Journal of Physics: Conference Series, Vol. 873 https://doi.org/10.1088/1742-6596/873/1/012008	journal	July 2017
Search for standard model production of four top quarks with same-sign and multilepton final states in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. The European Physical Journal C, Vol. 78, Issue 2 https://doi.org/10.1140/epjc/s10052-018-5607-5	journal	February 2018
Search for standard model production of four top quarks with same-sign and multilepton final states in proton–proton collisions at $\sqrt{s} = 13\,\text {TeV} $ Sirunyan, Albert M.; Tumasyan, Armen; Adam, Wolfgang Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2018-01410	text	January 2018
Top-quark physics at the Large Hadron Collider Cristinziani, Markus; Mulders, Martijn arXiv https://doi.org/10.48550/arxiv.1606.00327	text	January 2016
Natural Alignment in the Two Higgs Doublet Model Dev, P. S. Bhupal; Pilaftsis, Apostolos arXiv https://doi.org/10.48550/arxiv.1703.05730	text	January 2017

Linked Research (3)

Figures / Tables (3)

Figure 1(p. 3)

Figure 2(p. 8)

Figure 3(p. 10)

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