摘要
The top quark forward-backward asymmetry measured at the Tevatron collider shows a large deviation from standard model expectations. Among possible interpretations, a nonuniversal Z′ model is of particular interest as it naturally predicts a top quark in the forward region of large rapidity. To reproduce the size of the asymmetry, the couplings of the Z ′ to standard model quarks must be large, inevitably leading to copious production of same-sign top quark pairs at the energies of the Large Hadron Collider (LHC). We explore the discovery potential for tt and ttj production in early LHC experiments at 7-8 TeV and conclude that if no tt signal is observed with 1fb-1 of integrated luminosity, then a nonuniversal Z′ alone cannot explain the Tevatron forward-backward asymmetry.
原文 | 英語 |
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文章編號 | 201801 |
期刊 | Physical Review Letters |
卷 | 106 |
發行號 | 20 |
DOIs | |
出版狀態 | 已發佈 - 2011 五月 17 |
ASJC Scopus subject areas
- Physics and Astronomy(all)