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Top anti-top Asymmetries at the Tevatron and the LHC
High Energy Physics - Experiment · Submitted 26 Nov 2012
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim No deviations from the standard model have been noticed so far in the measurements of ATLAS and CMS.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
The heaviest known elementary particle today, the top quark, has been discovered in 1995 by the CDF and D0 collaborations at the Tevatron proton antiproton collider at Fermilab. Recently, the CDF and D0 collaborations have studied the forward-backward asymmetry in ttbar events, resulting in measured values larger than the standard model prediction. With the start of the LHC at CERN in 2010, a new top quark factory has opened and asymmetry measurements in ttbar have also been performed in a proton proton environment with higher collision energy. No deviations from the standard model have been noticed so far in the measurements of ATLAS and CMS. This article discusses recent results of asymmetry measurements in ttbar events of the ATLAS, CDF, CMS and D0 collaborations.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The heaviest known elementary particle today, the top quark, has been discovered in 1995 by the CDF and D0 collaborations at the Tevatron proton antiproton collider at Fermilab. | background 1.00 | 0.03 | 0.02 | asserted 1.00 |
| s1 | Recently, the CDF and D0 collaborations have studied the forward-backward asymmetry in ttbar events, resulting in measured values larger than the standard model prediction. | background 0.93 | 0.06 | 0.08 | asserted 1.00 |
| s2 | With the start of the LHC at CERN in 2010, a new top quark factory has opened and asymmetry measurements in ttbar have also been performed in a proton proton environment with higher collision energy. | background 0.99 | 0.07 | 0.04 | asserted 1.00 |
| s3 | No deviations from the standard model have been noticed so far in the measurements of ATLAS and CMS. | result 0.54 | 0.07 | 0.20 | asserted 0.99 |
| s4 | This article discusses recent results of asymmetry measurements in ttbar events of the ATLAS, CDF, CMS and D0 collaborations. | contribution 0.99 | 0.18 | 0.07 | asserted 0.92 |
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The paper
Original abstract
The heaviest known elementary particle today, the top quark, has been discovered in 1995 by the CDF and D0 collaborations at the Tevatron proton antiproton collider at Fermilab. Recently, the CDF and D0 collaborations have studied the forward-backward asymmetry in ttbar events, resulting in measured values larger than the standard model prediction. With the start of the LHC at CERN in 2010, a new top quark factory has opened and asymmetry measurements in ttbar have also been performed in a proton proton environment with higher collision energy. No deviations from the standard model have been noticed so far in the measurements of ATLAS and CMS. This article discusses recent results of asymmetry measurements in ttbar events of the ATLAS, CDF, CMS and D0 collaborations.
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What this paper does with the arXiv papers it cites
What it cites · 2 sentences without a confident label
Uses data or values from 3 papers
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The results extracted by D0 are based on 5.4 fb$^-1$ of Run II data [ref] , yielding $A_fb^l= 5.8 ±5.3$% with a prediction of $4.7±0.1$%, $A^ll_fb=5.3 ±8.4$% comparable to a prediction of $6.2±0.2$%, and $A^CP_fb = -1.8 ±5.3$% with a prediction of $-0.3 ±0.1$%.
Measurement of Leptonic Asymmetries and Top Quark Polarization in ttbar Production · Asymmetry Measurements · 0.94
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Due to its high mass of $m_t = 173.18 ±0.94$ GeV [ref] and its short lifetime, the top quark is believed to play a special role in electroweak symmetry breaking, serves as a window to physics beyond the standard model (SM), and provides a unique environment to study a bare quark.
Combination of the top-quark mass measurements from the Tevatron collider · Introduction · 0.94
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A recent calculation including electroweak and mixed QCD and electroweak corrections as well as using a NLO PDF in the denominator of the expansion in $alpha$ and $alpha_S$ yields an asymmetry of $A_fb^tt̅= 8.8±0.6$% [ref] .
Top quark and leptonic charge asymmetries for the Tevatron and LHC · Theoretical Predictions · 0.93
Compares with 1 paper
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The CDF collaboration compared their result to a NLO prediction including electroweak and QCD effects, $A_fb^l=1.6$% [ref] .
Top quark and leptonic charge asymmetries for the Tevatron and LHC · Asymmetry Measurements · 0.84
Cites as background 1 paper
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For an overview of many of these models, see for example Ref. [ref] .
Overview of models for the t tbar asymmetry · Asymmetry Measurements · 0.97
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