Measurement of the leptonic angular distribution in $W$ boson decay as a function of the $W$ transverse momentum using the CDF detector at the Tevatron

MEASUREMENT OF THE ANGULAR DISTRIBUTION OF ELECTRONS FROM W→eν DECAYS OBSERVED IN $p\bar p$ COLLISIONS AT $\sqrt{s} =1.8\, {\rm TeV}$

International Journal of Modern Physics A ◽

10.1142/s0217751x01006802 ◽

2001 ◽

Vol 16 (supp01a) ◽

pp. 318-321

Author(s):

◽

GEORG STEINBRÜCK

Keyword(s):

Angular Distribution ◽

Transverse Momentum ◽

Perturbative Qcd ◽

W Boson ◽

Mass Measurement ◽

Polar Angle ◽

Distribution Parameter ◽

Boson Mass ◽

Leading Order ◽

Proton Antiproton

We present the first measurement of the electron angular distribution parameter α2 in W → e ν events in proton-antiproton collisions as a function of the W boson transverse momentum. Our analysis is based on data collected using the DØ detector during the 1994–1995 Fermilab Tevatron run. We compare our results with next-to-leading order perturbative QCD, which predicts an angular distribution of (1 ± α1 cos θ* + α2 cos 2 θ*), where θ* is the polar angle of the electron in the Collins-Soper frame and α1 and α2 are functions of [Formula: see text], the W boson transverse momentum. This measurement provides a test of next-to-leading order QCD corrections which are a non-negligible contrbution to the W boson mass measurement.

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Lepton angular distribution of W boson productions

Physical Review D ◽

10.1103/physrevd.103.034011 ◽

2021 ◽

Vol 103 (3) ◽

Author(s):

Yang Lyu ◽

Wen-Chen Chang ◽

Randall Evan McClellan ◽

Jen-Chieh Peng ◽

Oleg Teryaev

Keyword(s):

Angular Distribution ◽

W Boson

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Nonperturbative Uncertainties on the Transverse Momentum Distribution of Electroweak Bosons and on the Determination of the W Boson Mass at the LHC

Advances in High Energy Physics ◽

10.1155/2019/2526897 ◽

2019 ◽

Vol 2019 ◽

pp. 1-11 ◽

Cited By ~ 7

Author(s):

Giuseppe Bozzi ◽

Andrea Signori

Keyword(s):

Transverse Momentum ◽

W Boson ◽

Direct Determination ◽

Boson Mass ◽

Proton Proton ◽

Theoretical Predictions ◽

Quark Transverse Momentum ◽

The Impact ◽

Proton Proton Collisions

In this contribution we present an overview of recent results concerning the impact of a possible flavour dependence of the intrinsic quark transverse momentum on electroweak observables. In particular, we focus on the qT spectrum of electroweak gauge bosons produced in proton-proton collisions at the LHC and on the direct determination of the W boson mass. We show that these effects are comparable in size to other nonperturbative effects commonly included in phenomenological analyses and should thus be included in precise theoretical predictions for present and future hadron colliders.

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Implementation of the ATLAS-EXOT-2018-030 analysis in the MadAnalysis 5 framework (W′ boson into a lepton and a neutrino; 139 fb−1)

Modern Physics Letters A ◽

10.1142/s0217732321410017 ◽

2020 ◽

pp. 2141001

Author(s):

Kyungmin Park ◽

Ui Min ◽

Soo Jin Lee ◽

Won Jun

Keyword(s):

Transverse Momentum ◽

Cross Sections ◽

Charged Lepton ◽

W Boson ◽

Transverse Mass ◽

Pole Mass ◽

Leading Order ◽

Mass Distributions ◽

Signal Prediction ◽

Missing Transverse Momentum

We present the MadAnalysis 5 implementation of the heavily charged gauge boson search to recast the analysis of its decay into one charged lepton and missing transverse momentum. Signal events describing [Formula: see text] ([Formula: see text] or [Formula: see text]) at [Formula: see text] TeV in the sequential standard model are generated by the MadGraph5_aMC@NLO at leading order. The corresponding signal cross-sections for both electron and muon channels vary from 195 fb to 0.238 fb depending on the pole mass of the [Formula: see text] boson in the range of 2 TeV to 6 TeV. We validate our implementation by comparing the transverse mass distributions of our signal prediction to those of the ATLAS analysis for an integrated luminosity of 139 fb[Formula: see text].

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