Probing Topcolor-Assisted Technicolor from Like-sign Top Pair Production at LHC

Details Probing Topcolor-Assisted Technicolor from Like-sign Top Pair Production at LHC Probing Topcolor-Assisted Technicolor from Like-sign Top Pair Production at LHC

2004-09-29

arxiv.org/abs/hep-ph/0409334v1

Phys.Rev.D70:114035,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 6 figs

Scientific paper

10.1103/PhysRevD.70.114035

The topcolor-assisted technicolor (TC2) theory predicts tree-level flavor-changing neutral-current (FCNC) top quark Yukawa couplings with top-pions. Such FCNC interactions will induce like-sign top quark pair productions at CERN Large Hadron Collider (LHC). While these rare productions are far below the observable level in the Standard Model and other popular new physics models such as the Minimal Supersymmetric Model, we find that in a sound part of parameter space the TC2 model can enhance the production cross sections to several tens of fb and thus may be observable at the LHC due to rather low backgrounds. Searching for these productions at the LHC will serve as an excellent probe for the TC2 model.

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