Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z'$ model at $\mathscr{O}(\alpha_s^2 \alpha_X)$

Bo Xiao; Shou-hua Zhu; You-kai Wang

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Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z'$ model at $\mathscr{O}(\alpha_s^2 \alpha_X)$

Bo Xiao, You-kai Wang, Shou-hua Zhu

High Energy Physics - Phenomenology · Submitted 13 Jun 2010

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

The authors' main claim After including the new higher order correction, the differential cross section can fit the data better than those only including the leading contributions from $Z'$, while the forward-backward asymmetry is still in agreement with the measurement.

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arXiv ID1006.2510 (version 3)

Pith IDRT55PTSP, Pith's permanent record of this paper and its review

CitationBo Xiao, Shou-hua Zhu, You-kai Wang. "Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z'$ model at $\mathscr{O}(\alpha_s^2 \alpha_X)$." arXiv:1006.2510 (2010). https://pith.science/paper/RT55PTSP

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What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.16 · human participants 0.01 · controlled comparison 0.42 · randomized assignment 0.01 · states quantitative result 0.18 · compares with prior results 0.92 · mentions code or data availability 0.02.

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arXiv listing abstract v3. Results and the main claim are underlined; show every role.

In this paper, forward-backward asymmetry and differential cross section of top quark in flavor violating $Z'$ model up to $\mathscr{O}(\alpha_s^2 \alpha_X)$ at Tevatron are calculated. In order to account for the top observed large forward-backward asymmetry, the new coupling $g_X$ among $Z'$ and quarks will be not much less than strong coupling constant $g_s$. After including the new higher order correction, the differential cross section can fit the data better than those only including the leading contributions from $Z'$, while the forward-backward asymmetry is still in agreement with the measurement.

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	In this paper, forward-backward asymmetry and differential cross section of top quark in flavor violating $Z'$ model up to $\mathscr{O}(\alpha_s^2 \alpha_X)$ at Tevatron are calculated.	contribution 1.00	0.94	0.11	asserted 0.99
s1	In order to account for the top observed large forward-backward asymmetry, the new coupling $g_X$ among $Z'$ and quarks will be not much less than strong coupling constant $g_s$.	interpretation 0.71	0.39	0.28	asserted 0.58
s2	After including the new higher order correction, the differential cross section can fit the data better than those only including the leading contributions from $Z'$, while the forward-backward asymmetry is still in agreement with the measurement.	result 0.98	0.91	0.54	asserted 0.95

What kind of paper the classifier reports this is: theoretical result 0.99 · evidence from simulation or computation 0.78.

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arXiv listing abstract v3

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

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P abstract

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S sections
T body sentences
C citations
R cross-paper relations

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

In this paper, forward-backward asymmetry and differential cross section of top quark in flavor violating $Z'$ model up to $\mathscr{O}(\alpha_s^2 \alpha_X)$ at Tevatron are calculated. In order to account for the top observed large forward-backward asymmetry, the new coupling $g_X$ among $Z'$ and quarks will be not much less than strong coupling constant $g_s$. After including the new higher order correction, the differential cross section can fit the data better than those only including the leading contributions from $Z'$, while the forward-backward asymmetry is still in agreement with the measurement.

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References

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Axigluons cannot explain the observed top quark forward-backward asymmetry
hep-ph 2010-07 conditional novelty 6.0 of 10

Flavor-changing B_d mixing and related constraints exclude the axigluon parameter region that best fits the Tevatron top forward-backward asymmetry, leaving too small an effect.
Light Z' Bosons at the Tevatron
hep-ph 2011-03 conditional novelty 5.0 of 10

A single leptophobic Z' near 150 GeV, with couplings tuned separately to each channel, can accommodate the Tevatron W+jj, multi-b, and top-asymmetry anomalies and double as a dark matter mediator.
On Models of New Physics for the Tevatron Top A_FB
hep-ph 2011-03 conditional novelty 5.0 of 10

Model-dependent event-selection efficiencies, not just parton-level spectra, decide whether W-prime and Z-prime models survive the Tevatron top asymmetry and invariant-mass constraints.

How the literature uses it

29 arXiv papers cite this in 37 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 · 13 sentences without a confident label

Uses its method or tool 1 paper

However, we carry out independent calculations [ref] with the help of FeynCalc [ref] , FormCalc [ref] and QCDLoop [ref] .

One-side Forward-backward Asymmetry in Top Quark Pair Production at CERN Large Hadron Collider · Introduction · 0.82

Cites it as background 20 papers

Similarly, model-independent analyses were performed [ref] and new physics models were invoked [ref] to explain earlier D0 and CDF measurements of the inclusive asymmetry [ref] .

Implications of the CDF t \bar t Forward-Backward Asymmetry for Hard Top Physics · Introduction · 0.94
However, from a phenomenological point of view, these models mainly fall into only two categories according to the nature of the new particle exchange: (i) $s$-channel exchange of vector mediators (e.g. axigluon models) [ref] or (ii) $t$-channel exchange of flavor-violating mediators [ref] [There is another class of models that can create effective axial QCD coupling from NP [ref] . ].

Tevatron Top $A_{FB}$ Versus LHC Top Physics · Introduction · 0.85
Models proposed thus far in the literature that generate the observed Tevatron $$ at tree level while not grossly disrupting the top pair production cross section fall into two categories according to the nature of the new particle exchange: (i) $s$-channel exchange of vector mediators with axial couplings (e.g. axigluon models) [ref] or (ii) $t$-channel exchange of flavor-violating mediators [ref] .

On Models of New Physics for the Tevatron Top A_FB · Introduction · 0.82

What it cites · 12 sentences without a confident label

Uses the method or tool of 3 papers

Two cutoff phase space slicing method [ref] is applied for such processes.

The two cutoff phase space slicing method · Contributions at $𝒪(α^2_s α_X)$ · 1.00
The calculations are carried out with the help of FeynCalc [ref] , FormCalc [ref] and QCDloop [ref] .

Scalar one-loop integrals for QCD · Contributions at $𝒪(α^2_s α_X)$ · 1.00
The calculations are carried out with the help of FeynCalc [ref] , FormCalc [ref] and QCDloop [ref] .

Automatized One-Loop Calculations in 4 and D dimensions · Contributions at $𝒪(α^2_s α_X)$ · 1.00

Compares with 1 paper

Histograms are drawn here in order to compare conveniently with the experimental measurements [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 · Numerical Results · 0.80

Cites as background 14 papers

SM predictions have been estimated in Refs. [ref] .

Charge asymmetry of heavy quarks at hadron colliders · Introduction · 0.87
SM predictions have been estimated in Refs. [ref] .

Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders · Introduction · 0.87
SM predictions have been estimated in Refs. [ref] .

Charge asymmetry in hadroproduction of heavy quarks · Introduction · 0.87

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