High Energy Physics - Phenomenology · arXiv:1104.4782 v1 · submitted 25 Apr 2011
Top quark asymmetry and Wjj excess at CDF from gauged flavor symmetry
The paper says
“We show that the scalar sector needed for fermion mass generation when the flavor symmetry of the standard model is maximally gauged can consistently explain two anomalies reported recently by the CDF collaboration - the forward-backward asymmetry in t-tbar pair production, and the dijet invariant mass in the Wjj channel.”
from the abstract · picked out as the main claim by a classifier
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The paper
Abstract
We show that the scalar sector needed for fermion mass generation when the flavor symmetry of the standard model is maximally gauged can consistently explain two anomalies reported recently by the CDF collaboration - the forward-backward asymmetry in t-tbar pair production, and the dijet invariant mass in the Wjj channel. A pair of nearly degenerate scalar doublets with masses in the range 150-200 GeV explain these anomalies, with additional scalars predicted in the mass range 100-400 GeV. Consistency of such low scale flavor physics with flavor changing processes is shown, and expectations for the LHC are outlined.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 0.98
What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.15 · human participants 0.01 · controlled comparison 0.04 · randomized assignment 0.01 · states quantitative result 0.88 · compares with prior results 0.33 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v1). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| We show that the scalar sector needed for fermion mass generation when the flavor symmetry of the standard model is maximally gauged can consistently explain two anomalies reported recently by the CDF collaboration - the forward-backward asymmetry in t-tbar pair production, and the dijet invariant mass in the Wjj channel. | contribution 0.64 | 0.88 | 0.91 | asserted 0.98 |
| A pair of nearly degenerate scalar doublets with masses in the range 150-200 GeV explain these anomalies, with additional scalars predicted in the mass range 100-400 GeV. | result 0.91 | 0.79 | 0.23 | asserted 0.99 |
| Consistency of such low scale flavor physics with flavor changing processes is shown, and expectations for the LHC are outlined. | future work 0.50 | 0.82 | 0.09 | asserted 0.99 |
What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from argument 0.51
What was examined, and what was not
Sources read
- arXiv listing abstract v1
Not examined
- 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
- R cross-paper relations
How the labels were made
Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,076 input tokens, $0.0001 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
Cited by 3 Pith papers
Reviewed papers on Pith that cite this one. The full citation record
- Relating direct CP violation in D decays and the forward-backward asymmetry in $t\bar t$ production hep-ph · Dec 2011
- Simple models for the top asymmetry: constraints and predictions hep-ph · Jul 2011
- Review of new physics effects in t-tbar production hep-ph · Jul 2011
How the literature uses it
18 arXiv papers cite this in 29 sentences
Papers whose main result relates to this one's
States a conflicting result 1 paper
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Actually with the coupling constant larger than one, it is impossible to explain either of the two CDF measurements consistently in this model.
Papers citing it · 14 sentences without a confident label
Compares with it 2 papers
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Then, our models become close to the simple $Z^'$ model of Ref. [ref] or the scalar-exchange model of Ref. [ref] .
Multi-Higgs doublet models with local $U(1)_H$ gauge symmetry and neutrino physics therein · Phenomenology · 0.84
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They use methods of effective field theory, and thus do not derive bounds on the mass and couplings of the scalar.) Our results are consistent with the results of Refs. [ref] .
Scalar-mediated $t\bar t$ forward-backward asymmetry · Top-related constraints · 0.94
Cites it as background 10 papers
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Of all these NP explanations, one of the most discussed model is the t-channel $Z^'$/$W^'$/scalar model [ref] , where the NP particle $Z^'$/$W^'$/scalar induces a new t-channel $qq̅→tt̅$.
New color-octet axial vector boson revisited · Introduction · 0.92
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Motivated by this discrepancy, numerous suggestions have been made on how to explain the observed large top FB asymmetry [ref] .
Chiral U(1) flavor models and flavored Higgs doublets: the top FB asymmetry and the Wjj · Introduction · 0.94
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In order to make $t$-channel models more appealing theoretically, there have been attempts to embed them in flavor-conserving models by introducing new horizontal symmetries [ref] .
Top condensation as a motivated explanation of the top forward-backward asymmetry · Introduction · 0.87
What it cites · 4 sentences without a confident label
Uses the method or tool of 1 paper
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To show our results we do a parton level calculation by implementing our model in CalcHEP [ref] .
CalcHEP 2.3: MSSM, structure functions, event generation, batchs, and generation of matrix elements for other packages · Introduction · 1.00
Uses data or values from 3 papers
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The same collaboration has also reported an excess in the 120-160 GeV mass range for dijet invariant mass in the $Wjj$ channel [ref] , which is 3.2 standard deviations away from SM predictions.
Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in ppbar Collisions at sqrt(s) = 1.96 TeV · Introduction · 0.80
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The CDF collaboration has reported a parton-level forward-backward (FB) asymmetry in the top quark pair production in the $tt̅$ rest frame to be $A_tt=0.475 ±0.114$ [ref] for large $tt̅$ invariant mass, $M_tt̅>450$ GeV, which is 3.4 standard deviations above the NLO QCD prediction of $0.088 ±0.013$.
Evidence for a Mass Dependent Forward-Backward Asymmetry in Top Quark Pair Production · Introduction · 0.98
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Taking into account K-factors of 1.3 [ref] would give us a cross section of about 4.38 pb.
Precision Calculations for Associated WH and ZH Production at Hadron Colliders · Introduction · 0.82
Cites as background 1 paper
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Eq. (4) will lead to new contributions to top quark pair production as well as the dijet searches at the Tevatron and the LHC [ref] .
A unified, flavor symmetric explanation for the t-tbar asymmetry and Wjj excess at CDF · Introduction · 0.83
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