Charge asymmetry of top quarks

German Rodrigo; Paola Ferrario

RECORD

Charge asymmetry of top quarks

Paola Ferrario, German Rodrigo

High Energy Physics - Phenomenology · Submitted 29 Jun 2010

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The production of such resonances might generate a sizable charge asymmetry of top versus antitop quarks.

how it is stated · speculative 0.87 read the record →

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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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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,959 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.29 · human participants 0.01 · controlled comparison 0.29 · randomized assignment 0.01 · states quantitative result 0.53 · compares with prior results 0.71 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; show every role.

The LHC is a promising machine to discover new physics in the top sector. There are several models that predict the existence of heavy colored resonances decaying to top quarks in the TeV energy range. The production of such resonances might generate a sizable charge asymmetry of top versus antitop quarks. At the Tevatron, a 2 sigma discrepancy with the SM prediction for the forward--backward asymmetry has been found, boosting a renewed interest for this kind of models. We consider a toy model with general flavour dependent couplings of the resonance to quarks, of both vector and axial-vector kind and investigate the possible constraints on the coupling space from the measurement of the asymmetry and the invariant mass distribution at the Tevatron. Then, we define a central asymmetry in a specific kinematic region and investigate its signature at the LHC as well as its statistical significance, for exclusive processes.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	The LHC is a promising machine to discover new physics in the top sector.	background 1.00	0.05	0.03	asserted 0.52
s1	There are several models that predict the existence of heavy colored resonances decaying to top quarks in the TeV energy range.	background 1.00	0.04	0.02	asserted 0.91
s2	The production of such resonances might generate a sizable charge asymmetry of top versus antitop quarks.	background 0.99	0.06	0.08	speculative 0.87
s3	At the Tevatron, a 2 sigma discrepancy with the SM prediction for the forward--backward asymmetry has been found, boosting a renewed interest for this kind of models.	background 1.00	0.06	0.04	asserted 1.00
s4	We consider a toy model with general flavour dependent couplings of the resonance to quarks, of both vector and axial-vector kind and investigate the possible constraints on the coupling space from the measurement of the asymmetry and the invariant mass distribution at the Tevatron.	contribution 0.66	0.90	0.07	asserted 0.80
s5	Then, we define a central asymmetry in a specific kinematic region and investigate its signature at the LHC as well as its statistical significance, for exclusive processes.	contribution 0.82	0.89	0.10	asserted 0.62

What kind of paper the classifier reports this is: theoretical result 0.93 · evidence from simulation or computation 0.42.

What was examined, and what was not

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arXiv listing abstract v1

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full text
figures and tables
references and citing sentences
relations to other papers

levels run

P abstract

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S sections
T body sentences
C citations
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

The LHC is a promising machine to discover new physics in the top sector. There are several models that predict the existence of heavy colored resonances decaying to top quarks in the TeV energy range. The production of such resonances might generate a sizable charge asymmetry of top versus antitop quarks. At the Tevatron, a 2 sigma discrepancy with the SM prediction for the forward--backward asymmetry has been found, boosting a renewed interest for this kind of models. We consider a toy model with general flavour dependent couplings of the resonance to quarks, of both vector and axial-vector kind and investigate the possible constraints on the coupling space from the measurement of the asymmetry and the invariant mass distribution at the Tevatron. Then, we define a central asymmetry in a specific kinematic region and investigate its signature at the LHC as well as its statistical significance, for exclusive processes.

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References

How the literature uses it

4 arXiv papers cite this in 8 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 3 sentences without a confident label

Contests it 1 paper

The axigluon model, where the couplings of axigluon to light quarks and heavy quarks are both at the strong coupling level [ref] , is strongly constrained by the dijet [ref] measurements; indeed, the axigluon model proposed in [ref] is already excluded by the latest dijet search by ATLAS [ref] .

New color-octet axial vector boson revisited · Introduction · contest 0.76

Cites it as background 3 papers

Another kind of widely discussed NP is the s-channel color-octet axial-vector boson [ref] , where the new boson induces a new s-channel $qq̅→tt̅$.

New color-octet axial vector boson revisited · Introduction · 0.98
Numerous models have been proposed to explain this discrepancy [ref] .

Axigluons cannot explain the observed top quark forward-backward asymmetry · Introduction · 0.97
Even at the LHC, the so-called central charge asymmetry $A_C$ has been constructed to study the forward backward asymmetry of the top quark [ref] .

One-side forward-backward asymmetry at the LHC · Bottom quark one-side forward-backward asymmetry $A_OFB^b$ in QCD · 0.89

What it cites · 8 sentences without a confident label

Uses the method or tool of 1 paper

We define a central asymmetry [ref] : A_C(y_C) = N_t(|y|≤y_C)-N_t̅(|y|≤y_C)/N_t(|y|≤y_C)+N_t̅(|y|≤y_C) .

Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders · The charge asymmetry at the LHC · 0.89

Uses data or values from 2 papers

The total charge asymmetry generated at the Tevatron by QCD at NLO has been calculated to be [ref] :

Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders · The charge asymmetry at the Tevatron · 0.84
The total charge asymmetry generated at the Tevatron by QCD at NLO has been calculated to be [ref] :

Axigluon signatures at hadron colliders · The charge asymmetry at the Tevatron · 0.84

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