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Journal of High Energy Physics Volume 2009 JHEP11(2009) Create an alert RSS this journal

J. A. Aguilar–Saavedra JHEP11(2009)030 doi:10.1088/1126-6708/2009/11/030

Identifying top partners at LHC

J. A. Aguilar–Saavedra

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Abstract References Cited By
We systematically study the possible signals at LHC of new vector-like quarks mainly coupled to the third generation. We consider heavy quarks T, B, X, Y of charges 2/3, -1/3, 5/3 and -4/3, respectively, in SU(2)L isosinglets TL,R, BL,R, or isodoublets TBL,R, XTL,R or BYL,R. Analyses based on a fast detector simulation are presented for twelve different final states containing one, two, three or four charged leptons in several invariant mass regions, also considering various b quark multiplicities. It is shown that with the combination of the different channels the new quarks can be identified and their charged and neutral decays established. The comparison among final states also shows that the single lepton one offers the best discovery potential at LHC. For heavy quark masses of 500 GeV, the 5σ discovery luminosities range from 0.16 fb−1 for a XTL,R doublet to 1.9 fb−1 for a BL,R singlet.

Keywords

Beyond Standard Model

Hadronic Colliders

Heavy Quarks Physics

 

E-print Number: 0907.3155

Cited: by |

Refers: to

PACS

13.85.Qk Inclusive production with identified leptons, photons, or other nonhadronic particles

14.65.Ha Top quarks

11.30.Ly Other internal and higher symmetries

13.90.+i Other topics in specific reactions and phenomenology of elementary particles (restricted to new topics in section 13)

Subjects

Particle physics and field theory

Dates

Issue 11 (November 2009)

Received 19 August 2009, accepted for publication 5 October 2009

Published 6 November 2009



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