Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-07-20
Phys.Rev. D84 (2011) 071504
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 3 figures, 3 tables, v2: to match version appearing in PRD, resolution in figures improved
Scientific paper
10.1103/PhysRevD.84.071504
We suggest a new possibility for ATLAS and CMS to explore the t-tbar forward-backward asymmetry measured at the Tevatron, by attempting to reconstruct t-tbar events, with one of the tops decaying semileptonically in the central region (|\eta| < 2.5) and the other decaying hadronically in the forward region (|\eta| > 2.5). For several models which give comparable Tevatron signals, we study the charge asymmetry at the LHC as a function of cuts on |\eta| and on the t-tbar invariant mass, m_{t-tbar}. We show that there is an interesting complementarity between cuts on |\eta| and m_{t-tbar} to suppress the dominant and symmetric gg -> t-tbar rate, and different combinations of cuts enhance the distinguishing power between models. This complementarity is likely to hold in other new physics scenarios as well, which affect the t-tbar cross section, so it motivates extending t-tbar reconstruction to higher |\eta|.
Arguin Jean-François
Freytsis Marat
Ligeti Zoltan
No associations
LandOfFree
Comment on measuring the t-tbar forward-backward asymmetry at ATLAS and CMS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Comment on measuring the t-tbar forward-backward asymmetry at ATLAS and CMS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comment on measuring the t-tbar forward-backward asymmetry at ATLAS and CMS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-36539