Journal
PHYSICS LETTERS B
Volume 698, Issue 3, Pages 243-250Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2011.03.010
Keywords
Collider phenomenology; Top quark pair asymmetry; Tevatron; W ' and Z ' gauge bosons
Funding
- U.S. Department of Energy [DE-FG02-95ER40896, DE-FG02-84ER40173]
- National Science Foundation
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Recent results from the CDF Collaboration indicate that the top-pair forward-backward asymmetry is largest in regions of high rapidity difference vertical bar Delta y vertical bar and invariant mass M-t (t) over bar. We show that experimental observations can be explained by our previously proposed Asymmetric Left-Right Model (ALRM). The gauge symmetry U'(1) x SU'(2) x 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 O(100 GeV). The signals from Z' -> t (t) over bar and W' -> tb at the LHC will test the model. (C) 2011 Elsevier B.V. All rights reserved.
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