Tevatron Asymmetry of Tops in a W',Z' Model

Details Tevatron Asymmetry of Tops in a W',Z' Model Tevatron Asymmetry of Tops in a W',Z' Model

2011-02-01

arxiv.org/abs/1102.0279v3

Phys.Lett.B698:243-250,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 7 figures; typos corrected, references added. Version to appear in PLB

Scientific paper

10.1016/j.physletb.2011.03.010

Recent results from the CDF Collaboration indicate the the top-pair forward-backward asymmetry is largest in regions of high rapidity difference $|\Delta y|$ and invariant mass $M_{t\bar t}.$ We show that experimental observations can be explained by our previously proposed Asymmetric Left-Right Model (ALRM). The gauge symmetry $U'(1)\times SU'(2)\times SU(2)$ is broken by a triplet Higgs in the primed sector. The $W'$ boson has a $(t,d)$ right-handed coupling and the $Z'$ boson has diagonal fermion couplings. We determine the model parameters to be $M_{W'} = 700$ GeV, $M_{Z'}=1$ TeV, and charged current coupling $g'_2=3$. The $W'$ and $Z'$ total decay widths are of $\mathcal{O}(100$ GeV). The signals from $Z'\to t\bar t$ and $W'\to tb$ at the LHC will test the model.

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