Impact of LHCb 13 TeV $W$ and $Z$ pseudo-data on the Parton Distribution Functions

C.-P. Yuan; Hang Yin; Qilin Deng; Qundong Han; Sayipjamal Dulat; Tie-Jiun Hou

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Impact of LHCb 13 TeV $W$ and $Z$ pseudo-data on the Parton Distribution Functions

Qilin Deng, Qundong Han, Hang Yin, Sayipjamal Dulat, Tie-Jiun Hou, C.-P. Yuan

High Energy Physics - Phenomenology · Submitted 7 Sep 2020

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

The authors' main claim Generally, sizable reductions in PDF uncertainties can be observed in the 300 fb$^{-1}$ data sample, particularly in the small-$x$ region.

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arXiv ID2009.03181 (version 3)

Pith IDQ2IAYSXC, Pith's permanent record of this paper and its review

CitationC.-P. Yuan, Hang Yin, Qilin Deng, Qundong Han, Sayipjamal Dulat, Tie-Jiun Hou. "Impact of LHCb 13 TeV $W$ and $Z$ pseudo-data on the Parton Distribution Functions." arXiv:2009.03181 (2020). https://pith.science/paper/Q2IAYSXC

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We study the potential of the LHCb 13 TeV single $W^{\pm}$ and $Z$ boson pseudo-data for constraining the parton distribution functions (PDFs) of the proton. As an example, we demonstrate the sensitivity of the LHCb 13 TeV data, collected with integrated luminosities of 5 fb$^{-1}$ and 300 fb$^{-1}$, to reducing the PDF uncertainty bands of the CT14HERA2 PDFs, using the error PDF updating package {\sc ePump}. The sensitivities of various experimental observables are compared. Generally, sizable reductions in PDF uncertainties can be observed in the 300 fb$^{-1}$ data sample, particularly in the small-$x$ region. The double-differential cross section measurement of $Z$ boson $p_T$ and rapidity can greatly reduce the uncertainty bands of $u$ and $d$ quarks in almost the whole $x$ range, as compared to various single observable measurements.

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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 study the potential of the LHCb 13 TeV single $W^{\pm}$ and $Z$ boson pseudo-data for constraining the parton distribution functions (PDFs) of the proton.	contribution 1.00	0.80	0.07	hedged possibility 0.42
s1	As an example, we demonstrate the sensitivity of the LHCb 13 TeV data, collected with integrated luminosities of 5 fb$^{-1}$ and 300 fb$^{-1}$, to reducing the PDF uncertainty bands of the CT14HERA2 PDFs, using the error PDF updating package {\sc ePump}.	method 0.93	0.86	0.08	asserted 0.97
s2	The sensitivities of various experimental observables are compared.	method 0.62	0.68	0.04	asserted 0.68
s3	Generally, sizable reductions in PDF uncertainties can be observed in the 300 fb$^{-1}$ data sample, particularly in the small-$x$ region.	result 0.98	0.82	0.45	asserted 0.83
s4	The double-differential cross section measurement of $Z$ boson $p_T$ and rapidity can greatly reduce the uncertainty bands of $u$ and $d$ quarks in almost the whole $x$ range, as compared to various single observable measurements.	result 1.00	0.81	0.41	asserted 0.95

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Original abstract

We study the potential of the LHCb 13 TeV single $W^{\pm}$ and $Z$ boson pseudo-data for constraining the parton distribution functions (PDFs) of the proton. As an example, we demonstrate the sensitivity of the LHCb 13 TeV data, collected with integrated luminosities of 5 fb$^{-1}$ and 300 fb$^{-1}$, to reducing the PDF uncertainty bands of the CT14HERA2 PDFs, using the error PDF updating package {\sc ePump}. The sensitivities of various experimental observables are compared. Generally, sizable reductions in PDF uncertainties can be observed in the 300 fb$^{-1}$ data sample, particularly in the small-$x$ region. The double-differential cross section measurement of $Z$ boson $p_T$ and rapidity can greatly reduce the uncertainty bands of $u$ and $d$ quarks in almost the whole $x$ range, as compared to various single observable measurements.

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References

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3 arXiv papers cite this in 3 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 · 2 sentences without a confident label

Cites it as background 1 paper

Studies of the impact of $W$ and $Z$ production data on PDFs have recently appeared [ref] based on the ePump package [ref] .

Lepton-Charge and Forward-Backward Asymmetries in Drell-Yan Processes for Precision Electroweak Measurements and New Physics Searches · Introduction · 0.93

What it cites · 43 sentences without a confident label

Uses the method or tool of 6 papers

The theoretical predictions in this work are computed using the ResBos [ref] package at approximate NNLO plus next-to-next-to-leading-logarithm (NNLL) in QCD interactions, in which the canonical scales are used [ref] .

Universal Non-perturbative Functions for SIDIS and Drell-Yan Processes · Updating Error PDFs · 1.00
The theoretical predictions in this work are computed using the ResBos [ref] package at approximate NNLO plus next-to-next-to-leading-logarithm (NNLL) in QCD interactions, in which the canonical scales are used [ref] .

Tevatron Run-1 Z Boson Data and Collins-Soper-Sterman Resummation Formalism · Updating Error PDFs · 1.00
The theoretical predictions in this work are computed using the ResBos [ref] package at approximate NNLO plus next-to-next-to-leading-logarithm (NNLL) in QCD interactions, in which the canonical scales are used [ref] .

Soft gluon effects on lepton pairs at hadron colliders · Updating Error PDFs · 1.00

Uses data or values from 4 papers

In the ePump study, for the $Z→ℓ^+ℓ^-$ pseudo-data input, the statistical uncertainties are scaled to the 5and 300data samples, separately, by extrapolating the total uncertainty of the LHCb 13publication [ref] to the pseudo-data sample.

Measurement of the forward Z boson production cross-section in pp collisions at $\sqrt{s} = 13$ TeV · Updating Error PDFs · 0.98
Similarly, for the $W^±→ℓ^± ν$ pseudo-data sample, uncertainties are estimated using the LHCb 8publication [ref] .

Measurement of forward $W\to e\nu$ production in $pp$ collisions at $\sqrt{s}=8\,$TeV · Updating Error PDFs · 0.99
Similarly, for the $W^±→ℓ^± ν$ pseudo-data sample, uncertainties are estimated using the LHCb 8publication [ref] .

Measurement of forward $W$ and $Z$ boson production in $pp$ collisions at $\sqrt{s} = 8\mathrm{\,Te\kern -0.1em V}$ · Updating Error PDFs · 0.99

Compares with 1 paper

The comparisons between the LHCb 13data and ResBos and FEWZ [ref] predictions are shown in Fig. [ref], with good agreement between data and ResBos prediction.

Combining QCD and electroweak corrections to dilepton production in FEWZ · Updating Error PDFs · 0.92

Cites as background 4 papers

The LHCb detector [ref] is a single-arm forward spectrometer designed for the study of particles containing $b$ or $c$ quarks, covering the pseudorapidity range $2<η<5$.

LHCb Detector Performance · Introduction · 0.93
In hadron colliders, most physics analyses rely heavily on the understanding of the parton picture of hadronic beam particles, including the precision measurements of the Standard Model (SM) parameters [ref] , and new physics searches.

Precise measurement of the W-boson mass with the CDF II detector · Introduction · 0.93
In hadron colliders, most physics analyses rely heavily on the understanding of the parton picture of hadronic beam particles, including the precision measurements of the Standard Model (SM) parameters [ref] , and new physics searches.

Measurement of the $W$-boson mass in pp collisions at $\sqrt{s}=7$ TeV with the ATLAS detector · Introduction · 0.93

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