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Simultaneously determining the $W^{\pm}$ boson mass and parton shower model parameters
High Energy Physics - Experiment · Submitted 23 Jul 2019
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We find that the proposed method performs well and has little trouble disentangling variations in the muon $p_{\mathrm{T}}$ spectrum due to $m_{W}$ from those due to the $W$ boson $p_{\mathrm{T}}$ model.
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The abstract, sentence by sentence
We explore the possibility of simultaneously determining the $W$ boson mass, $m_{W}$, and QCD-related nuisance parameters that affect the $W$ boson $p_{\mathrm{T}}$ spectrum from a fit to the $p_{\mathrm{T}}$ spectrum of the muon in the leptonic decay $W\rightarrow\mu\nu$. The study is performed using pseudodata generated using Pythia and the muon is required to fall in a kinematic region corresponding to the approximate acceptance of the LHCb detector. We find that the proposed method performs well and has little trouble disentangling variations in the muon $p_{\mathrm{T}}$ spectrum due to $m_{W}$ from those due to the $W$ boson $p_{\mathrm{T}}$ model.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We explore the possibility of simultaneously determining the $W$ boson mass, $m_{W}$, and QCD-related nuisance parameters that affect the $W$ boson $p_{\mathrm{T}}$ spectrum from a fit to the $p_{\mathrm{T}}$ spectrum of the muon in the leptonic decay $W\rightarrow\mu\nu$. | contribution 0.98 | 0.63 | 0.08 | hedged possibility 0.93 |
| s1 | The study is performed using pseudodata generated using Pythia and the muon is required to fall in a kinematic region corresponding to the approximate acceptance of the LHCb detector. | method 1.00 | 0.85 | 0.02 | asserted 0.97 |
| s2 | We find that the proposed method performs well and has little trouble disentangling variations in the muon $p_{\mathrm{T}}$ spectrum due to $m_{W}$ from those due to the $W$ boson $p_{\mathrm{T}}$ model. | result 0.99 | 0.96 | 0.91 | asserted 1.00 |
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The paper
Original abstract
We explore the possibility of simultaneously determining the $W$ boson mass, $m_{W}$, and QCD-related nuisance parameters that affect the $W$ boson $p_{\mathrm{T}}$ spectrum from a fit to the $p_{\mathrm{T}}$ spectrum of the muon in the leptonic decay $W\rightarrow\mu\nu$. The study is performed using pseudodata generated using Pythia and the muon is required to fall in a kinematic region corresponding to the approximate acceptance of the LHCb detector. We find that the proposed method performs well and has little trouble disentangling variations in the muon $p_{\mathrm{T}}$ spectrum due to $m_{W}$ from those due to the $W$ boson $p_{\mathrm{T}}$ model.
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References
How the literature uses it
3 arXiv papers cite this in 3 sentences
What it cites · 9 sentences without a confident label
Uses the method or tool of 5 papers
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Monte Carlo events of the inclusive process $→→$, at a centre-of-mass energy $= 13$, are generated using [ref] version 8.235 and the PDF set [ref] .
PYTHIA 6.4 Physics and Manual · Simulation of production and reweighting · 1.00
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Monte Carlo events of the inclusive process $→→$, at a centre-of-mass energy $= 13$, are generated using [ref] version 8.235 and the PDF set [ref] .
Parton distributions with QED corrections · Simulation of production and reweighting · 1.00
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The Beeston-Barlow “lite” prescription [ref] is used to account for the finite Monte Carlo statistics in the signal templates.
Incorporating Nuisance Parameters in Likelihoods for Multisource Spectra · Fitting method · 1.00
Uses data or values from 5 papers
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An example fit is shown in Fig. [ref], where all three of , and are allowed to vary, and the pseudodata statistics mirror Ref. [ref] .
Understanding and constraining the PDF uncertainties in a W boson mass measurement with forward muons at the LHC · Fitting method · 0.86
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The recent Gfitter electroweak fit update [ref] indirectly determines $= 80.354±0.007$, while the latest average of direct measurements, which is dominated by inputs from the [ref] , [ref] and [ref] collaborations, is $= 80.379±0.012$ [ref] .
Measurement of the W Boson Mass with the D0 Detector · Introduction · 0.90
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The recent Gfitter electroweak fit update [ref] indirectly determines $= 80.354±0.007$, while the latest average of direct measurements, which is dominated by inputs from the [ref] , [ref] and [ref] collaborations, is $= 80.379±0.012$ [ref] .
Measurement of the $W$-boson mass in pp collisions at $\sqrt{s}=7$ TeV with the ATLAS detector · Introduction · 0.90
Compares with 1 paper
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The ATLAS collaboration also varied the intrinsic $k_T$ cut off parameter in the tune of Pythia [ref] , but this parameter is found to be far less influential than the two parameters that we consider.
Measurement of the $Z/\gamma^*$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector · Introduction · 0.87
Cites as background 17 papers
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The first is to use analytic resummation techniques, where next-to-next-to-leading logarithmic accuracy (NNLL) is well known [ref] and N$^3$LL [ref] has recently been achieved.
Drell-Yan Production at NNLL'+NNLO Matched to Parton Showers · Introduction · 0.85
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The first is to use analytic resummation techniques, where next-to-next-to-leading logarithmic accuracy (NNLL) is well known [ref] and N$^3$LL [ref] has recently been achieved.
reSolve - A Transverse Momentum Resummation Tool · Introduction · 0.85
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The first is to use analytic resummation techniques, where next-to-next-to-leading logarithmic accuracy (NNLL) is well known [ref] and N$^3$LL [ref] has recently been achieved.
Production of Drell--Yan lepton pairs in hadron collisions: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy · Introduction · 0.85
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