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One-side Forward-backward Asymmetry in Top Quark Pair Production at CERN Large Hadron Collider
High Energy Physics - Phenomenology · Submitted 16 Aug 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim In this paper, we explore how to examine the {\em same} higher-order QCD effects at the more powerful Large Hadron Collider.
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The abstract, sentence by sentence
Both D0 and CDF at Tevatron reported the measurements of forward-backward asymmetry in top pair production, which showed possible deviation from the standard model QCD prediction. In this paper, we explore how to examine the {\em same} higher-order QCD effects at the more powerful Large Hadron Collider.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Both D0 and CDF at Tevatron reported the measurements of forward-backward asymmetry in top pair production, which showed possible deviation from the standard model QCD prediction. | background 1.00 | 0.03 | 0.04 | hedged possibility 0.83 |
| s1 | In this paper, we explore how to examine the {\em same} higher-order QCD effects at the more powerful Large Hadron Collider. | contribution 0.99 | 0.45 | 0.07 | unclear 0.50 |
What was examined, and what was not
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The paper
Original abstract
Both D0 and CDF at Tevatron reported the measurements of forward-backward asymmetry in top pair production, which showed possible deviation from the standard model QCD prediction. In this paper, we explore how to examine the {\em same} higher-order QCD effects at the more powerful Large Hadron Collider.
Human review
References
How the literature uses it
19 arXiv papers cite this in 42 sentences
Papers citing it · 27 sentences without a confident label
Builds on it 1 paper
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In this paper, we will extend our previous study to various final state cases [ref] .
One-side forward-backward asymmetry at the LHC · Introduction · 1.00
Uses its method or tool 3 papers
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We have chosen as an algorithm to attempt to recognize which proton put the quark, the same as Refs. [ref] .
Improving top quark induced charge asymmetries at the LHC using ttbar transverse momentum · Significance comparison using $tt̅$ transverse momentum · 1.00
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We make use of the so-called “one-side forward-backward asymmetry", $A_OFB$ [ref] , which is both conceptually transparent and observationally easy to detect.
New color-octet axial vector boson revisited · the implications of $Z_C$ at the LHC · 0.94
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For the QCD processes, we include the NLO QCD contribution in the numerator and LO QCD ones in the denominator [ref] .
One-side forward-backward asymmetry at the LHC · Bottom quark one-side forward-backward asymmetry $A_OFB^b$ around Z-pole · 0.95
Compares with it 1 paper
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For some of these observables, respective results were recently obtained in the literature [ref] with which we compare; some of our results are new.
Top quark and leptonic charge asymmetries for the Tevatron and LHC · Introduction · 1.00
Cites it as support 2 papers
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The first one comes from the proton parton density functions (PDF's): since valence quarks are more likely to have more momentum than the gluons and the sea quarks, then the events in which the $tt̅$ pair is boosted along the beam axis have an incremental probability of coming from quark-fusion production [ref] .
Enhancing the sensitivity to New Physics in the top-antitop invariant mass distribution · Introduction · 0.97
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The choice of $β$ instead of the momentum $|p_t^z+p_t̅^z|$ to increase the asymmetry [ref] is motivated by its small correlation with other energy variables such as $$, as well as by the fact that it is experimentally a more robust observable, less affected by uncertainties on the jet energy scale and resolution.
Boosting the t tbar charge asymmetry · Introduction · 0.97
Cites it as background 4 papers
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However, as it has been studied in the last years [ref] , it is possible to induce an asymmetry by setting an algorithm which indicates when an event should add to $N_+$ and when to $N_-$ (see below).
Improving top quark induced charge asymmetries at the LHC using ttbar transverse momentum · Significance of an induced asymmetry at the LHC · 0.88
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The search for kinematic cuts that increase in a given $tt̅$ sample has been studied in the last years [ref] mainly to increase the sensitivity in the top charge-asymmetry at the LHC and very few in the $m_tt̅$-spectrum [ref] .
Top-antitop resonance searches beyond 1 TeV · Introduction · 0.93
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Many analyses have already been proposed with this aim, including an LHC measurement of the top-quark forward-central asymmetry [ref] , studies making use of the polarization/spin-correlation in the $tt̅$ system [ref] , and more specialized analysis designed to look for the signatures of particular models [ref] .
Measuring the Bottom-Quark Forward-Central Asymmetry at the LHC · Introduction · 0.80
What it cites · 15 sentences without a confident label
Uses the method or tool of 4 papers
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However, we carry out independent calculations [ref] with the help of FeynCalc [ref] , FormCalc [ref] and QCDLoop [ref] .
Scalar one-loop integrals for QCD · Introduction · 0.82
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However, we carry out independent calculations [ref] with the help of FeynCalc [ref] , FormCalc [ref] and QCDLoop [ref] .
Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z'$ model at $\mathscr{O}(\alpha_s^2 \alpha_X)$ · Introduction · 0.82
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However, we carry out independent calculations [ref] with the help of FeynCalc [ref] , FormCalc [ref] and QCDLoop [ref] .
Automatized One-Loop Calculations in 4 and D dimensions · Introduction · 0.82
Uses data or values from 3 papers
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The measurements of CDF and D0 are [ref] , [equation] The measurements are consistent with previous ones [ref] .
First measurement of the forward-backward charge asymmetry in top quark pair production · Introduction · 0.83
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The measurements of CDF and D0 are [ref] , [equation] The measurements are consistent with previous ones [ref] .
Forward-Backward Asymmetry in Top Quark Production in ppbar Collisions at sqrt{s}=1.96 TeV · Introduction · 0.83
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The measurements of CDF and D0 are [ref] , [equation] The measurements are consistent with previous ones [ref] .
First Measurement of the $\lowercase{\ttbar}$ Differential Cross Section $\lowercase{d\sigma/d}M_{\lowercase{{t\overline{t}}}}$ in $\lowercase{\ppbar}$ Collisions at $\sqrt{\lowercase{s}}=1.96$ TeV · Introduction · 0.83
Compares with 2 papers
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To check our Fortran code, forward-backward asymmetry at Tevatron is recalculated independently using our code. $A_FB$ is calculated to be $7.1%$, which is in good agreement with the existing results [ref] .
Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders · Introduction · 1.00
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To check our Fortran code, forward-backward asymmetry at Tevatron is recalculated independently using our code. $A_FB$ is calculated to be $7.1%$, which is in good agreement with the existing results [ref] .
Distributions and correlations for top quark pair production and decay at the Tevatron and LHC. · Introduction · 1.00
Cites as support 1 paper
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This makes both asymmetries small, especially for $A_C$ [ref] .
Massive color-octet bosons and the charge asymmetries of top quarks at hadron colliders · Introduction · 0.97
Cites as background 5 papers
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Although some high order effects in $tt̅$ production have been considered, such as soft gluon resummation [ref] and the exclusive next-to-leading order cross section of $tt̅+jet$ production [ref] , the exact inclusive next-to-leading order asymmetric cross section which involves the two-loop contributions is still unknown.
Threshold Resummation for the Top Quark Charge Asymmetry · Introduction · 0.80
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Although some high order effects in $tt̅$ production have been considered, such as soft gluon resummation [ref] and the exclusive next-to-leading order cross section of $tt̅+jet$ production [ref] , the exact inclusive next-to-leading order asymmetric cross section which involves the two-loop contributions is still unknown.
Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: Phenomenological studies for the Tevatron and the LHC · Introduction · 0.80
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Although some high order effects in $tt̅$ production have been considered, such as soft gluon resummation [ref] and the exclusive next-to-leading order cross section of $tt̅+jet$ production [ref] , the exact inclusive next-to-leading order asymmetric cross section which involves the two-loop contributions is still unknown.
Renormalization-Group Improved Predictions for Top-Quark Pair Production at Hadron Colliders · Introduction · 0.80
Discussion
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