ABM11 parton distributions and benchmarks

J. Bluemlein; S. Alekhin; S.-O. Moch

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ABM11 parton distributions and benchmarks

S. Alekhin, J. Bluemlein, S.-O. Moch

High Energy Physics - Phenomenology · Submitted 7 Aug 2012

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

The authors' main claim We present a determination of the nucleon parton distribution functions (PDFs) and of the strong coupling constant $\alpha_s$ at next-to-next-to-leading order (NNLO) in QCD based on the world data for deep-inelastic scattering and the fixed-target data for the Drell-Yan process.

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.09 · human participants 0.01 · controlled comparison 0.12 · randomized assignment 0.01 · states quantitative result 0.10 · compares with prior results 0.96 · mentions code or data availability 0.04.

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We present a determination of the nucleon parton distribution functions (PDFs) and of the strong coupling constant $\alpha_s$ at next-to-next-to-leading order (NNLO) in QCD based on the world data for deep-inelastic scattering and the fixed-target data for the Drell-Yan process. The analysis is performed in the fixed-flavor number scheme for $n_f=3,4,5$ and uses the $\bar{MS}$ scheme for $\alpha_s$ and the heavy quark masses. The fit results are compared with other PDFs and used to compute the benchmark cross sections at hadron colliders to the NNLO accuracy.

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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	We present a determination of the nucleon parton distribution functions (PDFs) and of the strong coupling constant $\alpha_s$ at next-to-next-to-leading order (NNLO) in QCD based on the world data for deep-inelastic scattering and the fixed-target data for the Drell-Yan process.	contribution 1.00	0.95	0.46	asserted 1.00
s1	The analysis is performed in the fixed-flavor number scheme for $n_f=3,4,5$ and uses the $\bar{MS}$ scheme for $\alpha_s$ and the heavy quark masses.	method 1.00	0.84	0.04	asserted 1.00
s2	The fit results are compared with other PDFs and used to compute the benchmark cross sections at hadron colliders to the NNLO accuracy.	result 0.55	0.94	0.27	asserted 1.00

What kind of paper the classifier reports this is: dataset or benchmark 0.98 · evidence from analysis of existing data 1.00.

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The paper

Original abstract

We present a determination of the nucleon parton distribution functions (PDFs) and of the strong coupling constant $\alpha_s$ at next-to-next-to-leading order (NNLO) in QCD based on the world data for deep-inelastic scattering and the fixed-target data for the Drell-Yan process. The analysis is performed in the fixed-flavor number scheme for $n_f=3,4,5$ and uses the $\bar{MS}$ scheme for $\alpha_s$ and the heavy quark masses. The fit results are compared with other PDFs and used to compute the benchmark cross sections at hadron colliders to the NNLO accuracy.

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Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States the same result 1 paper

We report on recent determinations of NNLO parton distributions and of $\alpha_s(M_Z)$ based on the world deep-inelastic data, supplemented by collider data.

Parton Distributions and $\alpha_s$ for the LHC · 0.80

What it cites · 6 sentences without a confident label

Builds on 1 paper

These PDFs are obtained from the updated version of the ABKM09 analysis [ref] performed in the fixed-flavor number (FFN) scheme with the number of fermions taken as $n_f=3,4,5$, depending on the process used to constrain the PDFs.

The 3-, 4-, and 5-flavor NNLO Parton from Deep-Inelastic-Scattering Data and at Hadron Colliders · Introduction · 0.85

Uses the method or tool of 1 paper

However, in the present fit we employ the heavy-quark Wilson coefficients with the $MS$ definition for the $c$- and $b$-quark masses, as suggested in Ref. [ref] .

Heavy-quark deep-inelastic scattering with a running mass · Introduction · 0.89

Uses data or values from 2 papers

In the present analysis we replace the inclusive neutral-current (NC) DIS data of the H1 and ZEUS experiments by the combined HERA data set, which are obtained from merging those of separate experiments [ref] .

Combined Measurement and QCD Analysis of the Inclusive ep Scattering Cross Sections at HERA · Introduction · 1.00
Finally, we include the H1 data obtained in a special HERA run at reduced collision energy, which are particularly sensitive to the contribution of longitudinal structure function $F_L$ at small $x$ [ref] .

Measurement of the Inclusive e{\pm}p Scattering Cross Section at High Inelasticity y and of the Structure Function FL · Introduction · 0.96

Compares with 7 papers

This is comparable with our earlier determination $α_s(M_Z)=0.1135±0.0014(exp.)$ [ref] , while the error is improved due to more accurate data employed in the present analysis.

The 3-, 4-, and 5-flavor NNLO Parton from Deep-Inelastic-Scattering Data and at Hadron Colliders · Introduction · 0.99
Moreover, the value of $α_s=0.1151±0.0001 (stata.)±0.0047(sys.)$ extracted from the ATLAS data of Ref. [ref] in the NLO [ref] is in agreement with our results.

Evaluation of the Strong Coupling Constant alpha_s Using the ATLAS Inclusive Jet Cross-Section Data · Introduction · 0.91
Moreover, the value of $α_s=0.1151±0.0001 (stata.)±0.0047(sys.)$ extracted from the ATLAS data of Ref. [ref] in the NLO [ref] is in agreement with our results.

Measurement of inclusive jet and dijet production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector · Introduction · 0.91

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