Prospects for the precision measurement of the <i>W</i> mass with the CMS detector at the LHC

Büge, Volker; Ghezzi, A.; Jung, C.; Malberti, M.; Quast, G.; Fatis, T. Tabarelli de

doi:10.1088/0954-3899/34/5/n02

Cited by 25 publications

(48 citation statements)

References 13 publications

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“…We include a discussion of the reconstruction efficiency uncertainty, which is omitted in [14]. On the theoretical side, the present note and [14] agree on the initial uncertainties related to PDFs and the description of the W transverse momentum distribution. Our improvements in this respect rely on an analysis of the constraints provided by the analysis of the Z boson differential cross-section at the LHC.…”

Section: Impact On the W Mass Measurementsupporting

confidence: 61%

“…Let us briefly compare our results with the recent prospects presented by the CMS Collaboration [14]. We base our comparison on the p T -based m W measurement and 10 fb −1 of data.…”

Section: Impact On the W Mass Measurementmentioning

confidence: 91%

“…16 (see also [14]), the current PDF uncertainties induce an uncertainty in the W rapidity distributions which, through acceptance effects, propagates a systematic uncertainty on the W mass determination of ∼25 MeV. We present below an attempt to estimate how this will improve with the LHC data.…”

Section: Rapidity Distribution: δM W (Y W )mentioning

confidence: 97%

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Re-evaluation of the LHC potential for the measurement of m W

Besson

Boonekamp

Klinkby³

et al. 2008

Eur. Phys. J. C

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We present a study of the LHC sensitivity to the W boson mass based on simulation studies. We find that both experimental and phenomenological sources of systematic uncertainties can be strongly constrained with Z measurements: the lineshape, dσ Z /dm, is robustly predicted, and its analysis provides an accurate measurement of the detector resolution and absolute scale, while the differential cross-section analysis, d 2 σ Z /dydp T , absorbs the strong interaction uncertainties. A sensitivity δm W ∼ 7 MeV for each decay channel (W → eν, W → μν), and for an integrated luminosity of 10 fb −1 , appears as a reasonable goal.

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Section: Impact On the W Mass Measurementsupporting

confidence: 61%

“…Let us briefly compare our results with the recent prospects presented by the CMS Collaboration [14]. We base our comparison on the p T -based m W measurement and 10 fb −1 of data.…”

Section: Impact On the W Mass Measurementmentioning

confidence: 91%

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Re-evaluation of the LHC potential for the measurement of m W

Besson

Boonekamp

Klinkby³

et al. 2008

Eur. Phys. J. C

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“…This in turn requires a significant improvement in the quality of the hadronic cross section data at energies around the cc resonances and below, and a better knowledge of the c and b quark masses entering the perturbative prediction of the cross sections where applicable, which serve as input to the dispersion integral. Reference [98] quotes expected uncertainties of 36 CMS expects a systematic (statistical) precision of better than 20 MeV (10 MeV) for an integrated luminosity of 10 fb −1 [17,92]. It uses a method based on solely the reconstruction of the charged lepton transverse momentum, which has reduced systematic uncertainties compared to reconstructing the transverse W mass, with the downside of a smaller statistical yield.…”

Section: Prospects For the Lhc And Ilcmentioning

confidence: 99%

Revisiting the global electroweak fit of the Standard Model and beyond with Gfitter

et al. 2009

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-The global fit of the Standard Model to electroweak precision data, routinely performed by the LEP electroweak working group and others, demonstrated impressively the predictive power of electroweak unification and quantum loop corrections. We have revisited this fit in view of (i) the development of the new generic fitting package, Gfitter, allowing flexible and efficient model testing in high-energy physics, (ii) the insertion of constraints from direct Higgs searches at LEP and the Tevatron, and (iii) a more thorough statistical interpretation of the results. Gfitter is a modular fitting toolkit, which features predictive theoretical models as independent plugins, and a statistical analysis of the fit results using toy Monte Carlo techniques. The state-of-the-art electroweak Standard Model is fully implemented, as well as generic extensions to it. Theoretical uncertainties are explicitly included in the fit through scale parameters varying within given error ranges. This paper introduces the Gfitter project, and presents state-of-the-art results for the global electroweak fit in the Standard Model, and for a model with an extended Higgs sector (2HDM). Numerical and graphical results for fits with and without including the constraints from the direct Higgs searches at LEP and Tevatron are given. Perspectives for future colliders are analysed and discussed.Including the direct Higgs searches, we find M H = 116.4 +18.3 −1.3 GeV, and the 2σ and 3σ allowed regions [114, 145] GeV and [[113, 168] and [180, 225]] GeV, respectively. For the strong coupling strength at fourth perturbative order we obtain α S (M 2 Z ) = 0.1193 +0.0028 −0.0027 (exp) ± 0.0001(theo). Finally, for the mass of the top quark, excluding the direct measurements, we find m t = 178.2 +9.8 −4.2 GeV. In the 2HDM we exclude a charged-Higgs mass below 240 GeV at 95% confidence level. This limit increases towards larger tanβ, e.g., M H ± < 780 GeV is excluded for tanβ = 70.

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“…Atlas and Cms are planning to measure M W and the possibility of reaching a final error of 15 MeV or eventually of 10 MeV has been discussed [6][7][8] * . The SM prediction for M W has been reevaluated in ref.…”

Section: Introductionmentioning

confidence: 99%

Precision measurement of the W -boson mass: Theoretical contributions and uncertainties

et al. 2017

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Abstract:We perform a comprehensive analysis of electroweak, QED and mixed QCDelectroweak corrections underlying the precise measurement of the W -boson mass M W at hadron colliders. By applying a template fitting technique, we detail the impact on M W of next-to-leading order electroweak and QCD corrections, multiple photon emission, lepton pair radiation and factorizable QCD-electroweak contributions. As a by-product, we provide an up-to-date estimate of the main theoretical uncertainties of perturbative nature. Our results can serve as a guideline for the assessment of the theoretical systematics at the Tevatron and LHC and allow a more robust precision measurement of the W -boson mass at hadron colliders.

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Prospects for the precision measurement of the W mass with the CMS detector at the LHC

Abstract: The precise measurement of the mass of the

Cited by 25 publications

References 13 publications

Re-evaluation of the LHC potential for the measurement of m W

Re-evaluation of the LHC potential for the measurement of m W

Revisiting the global electroweak fit of the Standard Model and beyond with Gfitter

Precision measurement of the W -boson mass: Theoretical contributions and uncertainties

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