Download or read book Measurement of the W Boson Mass and Width with the L3 Detector written by Sanjeev Vinodpersad Baldew and published by . This book was released on 2004 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Mass and Width of the W Boson with the L3 Detector at LEP written by Arno Straessner and published by . This book was released on 2000 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the Mass and Width of the W Boson Using the Full Data Sample from the OPAL Detector at LEP written by Francesco Spanò and published by . This book was released on 2004 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass and Width of the W Boson written by Alan M. Button and published by . This book was released on 1999 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precision Matters Measurement of the W Boson Mass and Width with the ATLAS Detector at a Centre of mass Energy of 7 TeV and the Activity of the Underlying Event in Z Boson Events at a Centre of mass Energy of 13 TeV written by Lennart Adam and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precision Matters Measurement of the W Boson Mass and Width with the ATLAS Detector at a Centre of mass Energy of 7 TeV and the Activity of the Underlying Event in Z Boson Events at a Centre of mass Energy of 13 TeV written by Lennart Adam and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct Measurement of the W Boson Width written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a direct measurement of the width of the W boson using the shape of the transverse mass distribution of W → e[nu] candidates selected in 1 fb−1 of data collected with the D0 detector at the Fermilab Tevatron collider in p{bar p} collisions at √s = 1.96 TeV. We use the same methods and data sample that were used for our recently published W boson mass measurement, except for the modeling of the recoil, which is done with a new method based on a recoil library. Our result, 2.028 ± 0.072 GeV, is in agreement with the predictions of the standard model and is the most precise direct measurement result from a single experiment to date.
Download or read book Measurements of the Mass and Width of the W Boson from mathematical Formula Events with the ALEPH Detector written by Barbara Maartje Raeven and published by . This book was released on 2000 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the W Boson Mass and Width Using a Novel Recoil Model written by and published by . This book was released on 2009 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a direct measurement of the W boson mass (M{sub W}) and decay width ([Lambda]{sub W}) in 1 fb−1 of W → e[nu] collider data at D0 using a novel method to model the hadronic recoil. The mass is extracted from fits to the transverse mass M{sub T}, p{sub T}(e), and E{sub T} distributions. The width is extracted from fits to the tail of the M{sub T} distribution. The electron energy measurement is simulated using a parameterized model, and the recoil is modeled using a new technique by which Z recoils are chosen from a data library to match the p{sub T} and direction of each generated W boson. We measure the the W boson mass to be M{sub W} = 80.4035 ± 0.024(stat) ± 0.039(syst) from the M{sub T}, M{sub W} = 80.4165 ± 0.027(stat) ± 0.038(syst) from the pT(e), and MW = 80.4025 ± 0.023(stat) ± 0.043(syst) from the E{sub T} distributions. [Lambda]{sub W} is measured to be [Lambda]{sub W} = 2.025 ± 0.038(stat) ± 0.061(syst) GeV.
Download or read book Measurement of the W Boson Mass with the D O Detector Using the Electron ET Spectrum written by Ian Malcolm Adam and published by . This book was released on 1997 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the W Boson Mass and Width Using a Novel Recoil Model written by Matthew J. Wetstein and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurements of the W Boson Mass with the D0 Detector written by and published by . This book was released on 2013 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first part, we describe what is the W boson mass in the context of the Standard Model. We discuss the prominent role this physical observable plays in the determination of the internal self consistency of the Electroweak Sector. We review measurements and calculation of the W boson mass done in past and argue about the importance and feasibility of improving the experimental determination. We give a description of the Fermilab Tevatron Collider and the D0 detector, highlighting the relevant parts for the measurement described in this Dissertation. In the second part, we give a detailed description of a measurement of the W boson mass using the D0 Central Calorimeter. The measurement uses 1.68 x 106 candidates from W → en decays, corresponding to 4.3 fb-1 of integrated luminosity collected from 2006 to 2009. We measure the mass using the transverse mass, electron transverse momentum, and missing transverse energy distributions. The transverse mass and electron transverse momentum measurements are the most precise and are combined to give MW = 80.367 ± 0.013(stat) ± 0.023 (syst) GeV = 80.367 ± 0.026 GeV. This is combined with an earlier D0 result determined using an independent 1 fb-1 data sample, also with central electrons only, to give MW = 80.375± 0.023 GeV. The uncertainty in the measurement is dominated by the determination of the calorimeter electron energy scale, the W sample size, the knowledge of the parton distribution function. In the third part, we discuss methods of reducing the dominant uncertainties in the W boson mass measurements. We show that introducing electrons detected in the End Calorimeters greatly reduce the measurement systematic uncertainty, especially the on related to the parton distribution functions. We describe a precise calibration of the End Calorimeter using Z → ee events corresponding to 4.3 fb-1 of integrated luminosity. The calibration is an important milestone in a measurement that explores a larger part of the D0 Calorimeter. We present parametrized models that describe the response of the End Calorimeters to electron showers and soft hadronic particles, giving special attention to the specific challenges of a measurement in the forward region: the inhomogeneity of the uninstrumented materials, the large hadronic energy flow in the calorimeter and the jet misidentification probability.
Download or read book Measurement of the W Boson Mass with the D0 Detector written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We give a detailed description of the measurement of the $W$ boson mass, $M_W$, performed on an integrated luminosity of 4.3 fb$^{-1}$, which is based on similar techniques as used for our previous measurement done on an independent data set of 1 fb$^{-1}$ of data. The data were collected using the D0 detector at the Fermilab Tevatron Collider. This data set yields $1.68\times 10^6$ $W\rightarrow e\nu$ candidate events. We measure the mass using the transverse mass, electron transverse momentum, and missing transverse energy distributions. The $M_W$ measurements using the transverse mass and the electron transverse momentum distributions are the most precise of these three and are combined to give $M_W$ = 80.367 $\pm$ 0.013 (stat) $\pm$ 0.022 (syst) GeV = 80.367 $\pm$ 0.026 GeV. When combined with our earlier measurement on 1 fb$^{-1}$ of data, we obtain $M_W$ = 80.375 $\pm$ 0.023 GeV.
Download or read book Measurements of the Mass and Width of W Boson from E e W W e mu nuqq Events with the ALEPH Detector written by Barbara Maartje Raeven and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precision Measurement of the Mass and Width of the W Boson at CDF written by and published by . This book was released on 2009 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: A precision measurement of the mass and width of the W boson is presented. The W bosons are produced in proton antiproton collisions occurring at a centre of mass energy of 1.96 TeV at the Tevatron accelerator. The data used for the analyses is collected by the Collider Detector at Fermilab (CDF) and corresponds to an average integrated luminosity of 350 pb−1 for the W width analysis for the electron and muon channels and an average integrated luminosity of 2350 pb−1 for the W mass analysis. The mass and width of the W boson is extracted by fitting to the transverse mass distribution, with the peak of the distribution being most sensitive to the mass and the tail of the distribution sensitive to the width. The W width measurement in the electron and muon channels is combined to give a final result of 2032 ± 73 MeV. The systematic uncertainty on the W mass from the recoil of the W boson against the initial state gluon radiation is discussed. A systematic study of the recoil in Z --> ee− events where one electron is reconstructed in the central calorimeter and the other in the plug calorimeter and its effect on the W mass is presented for the first time in this thesis.
Download or read book Measurement of the W Boson Mass with the Collider Detector at Fermilab written by Andrew Scott Gordon and published by . This book was released on 1998 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indirect Measurement of the Width of the W Boson at the D 0 Experiment written by Paul James Telford and published by . This book was released on 2006 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
