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Precise Measurement Of The W Boson Mass With The Cdf Ii Detector
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Book Synopsis Precise Measurement of the $W$-boson Mass with the CDF II Detector by :
Download or read book Precise Measurement of the $W$-boson Mass with the CDF II Detector written by and published by . This book was released on 2012 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have measured the W-boson mass M{sub W} using data corresponding to 2.2 fb−1 of integrated luminosity collected in p{bar p} collisions at √s = 1.96 TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470 126 W → e? candidates and 624 708 W →?? candidates yield the measurement M{sub W} = 80 387 ± 12{sub stat} ± 15{sub syst} = 80 387 ± 19 MeV/c2. This is the most precise measurement of the W-boson mass to date and significantly exceeds the precision of all previous measurements combined.
Book Synopsis An Improved W Boson Mass Measurement Using the Collider Detector at Fermilab by :
Download or read book An Improved W Boson Mass Measurement Using the Collider Detector at Fermilab written by and published by . This book was released on 2012 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mass of the W boson is one of the most important parameters in the Standard Model. A precise measurement of the W boson mass, together with a precise measurement of the top quark mass, can constrain the mass of the undiscovered Higgs boson within the Standard Model framework or give a hint for physics beyond the Standard Model. This dissertation describes a measurement of the W boson mass through its decay into a muon and a neutrino using ~ 2.2 fb-1 of √ s = 1.96 TeV p$\bar{p}$ data taken with the CDF II detector at Fermilab. We measure the W boson mass to be (80.374 ± 0.015stat. ± 0.016syst.) GeV/c2. This result, when combined with the W mass measurement in the electron channel, leads to the single most precise mW value and greatly constrains the possible mass range of the undiscovered Higgs boson. iv.
Book Synopsis A Precision Measurement of the W Boson Mass at by :
Download or read book A Precision Measurement of the W Boson Mass at written by and published by . This book was released on 2009 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: I present the first measurement of the W boson mass in the electron decay channel using the Run II D0 detector at the Fermilab Tevatron Collider. The data used was collected from 2002 to 2006 and the integrated luminosity is 1 fb−1. The W boson mass was determined from the likelihood fit to the measured data distribution. The mass value is found to be 80.401 ± 0.023(stat) ± 0.037(syst) GeV = 80.401 ± 0.044 GeV using the transverse mass spectrum, which is the most precise measurement from one single experiment to date. This result puts tighter constraints on the mass of the standard model Higgs boson. I also present three other measurements that can help to reduce the theoretical uncertainties for the future W mass measurements.
Book Synopsis W Boson Mass Measurement at CDF. by :
Download or read book W Boson Mass Measurement at CDF. written by and published by . This book was released on 2017 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the closeout report for the grant for experimental research at the energy frontier in high energy physics. The report describes the precise measurement of the W boson mass at the CDF experiment at Fermilab, with an uncertainty of ≈ 12 MeV, using the full dataset of ≈ 9 fb-1 collected by the experiment up to the shutdown of the Tevatron in 2011. In this analysis, the statistical and most of the experimental systematic uncertainties have been reduced by a factor of two compared to the previous measurement with 2.2 fb-1 of CDF data. This research has been the culmination of the PI's track record of producing world-leading measurements of the W boson mass from the Tevatron. The PI performed the first and only measurement to date of the W boson mass using high-rapidity leptons using the D0 endcap calorimeters in Run 1. He has led this measurement in Run 2 at CDF, publishing two world-leading measurements in 2007 and 2012 with total uncertainties of 48 MeV and 19 MeV respectively. The analysis of the final dataset is currently under internal review in CDF. Upon approval of the internal review, the result will be available for public release.
Book Synopsis Measurement of the W Boson and Top Quark Masses at CDF. by : Anyes Taffard
Download or read book Measurement of the W Boson and Top Quark Masses at CDF. written by Anyes Taffard and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on the measurements of the W boson and top-quark masses with the CDF II detector in p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron. We highlight the major features and uncertainties for the W mass measurement. The top-quark mass measurements are presented in each t{bar t} decay channels. The combination of the most precise measurements from CDF to date leads to M{sub top} = 172.4 {+-} 1.5(stat.) {+-} 2.2(sys.) GeV/c{sup 2}, corresponding to a relative uncertainty of 1.5%.
Book Synopsis A Precise Measurement of the $W$-boson Mass with the Collider Detector at Fermilab by :
Download or read book A Precise Measurement of the $W$-boson Mass with the Collider Detector at Fermilab written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First Measurement of the W Boson Mass in Run II of the Tevatron by :
Download or read book First Measurement of the W Boson Mass in Run II of the Tevatron written by and published by . This book was released on 2007 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the W boson mass using 200 pb−1 of data collected in p{bar p} collisions at √s = 1.96 TeV by the CDF II detector at Run II of the Fermilab Tevatron. With a sample of 63964 W → ev candidates and 51128 W W → [mu]v candidates, we measure M{sub W} = (80413 ± 34{sub stat} ±34{sub syst} = 80413 ± 48) MeV/c2. This is the most precise single measurement of the W boson mass to date.
Book Synopsis First Run II Measurement of the W Boson Mass by :
Download or read book First Run II Measurement of the W Boson Mass written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe a measurement of the W boson mass m{sub W} using 200 pb−1 of √s = 1.96 TeV p{bar p} collision data taken with the CDF II detector. With a sample of 63,964 W → e[nu] candidates and 51,128 W → [mu][nu] candidates, we measure m{sub W} = [80.413 ± 0.034(stat.) ± 0.034 (sys.) = 80.413 ± 0.048] GeV/c2. This is the single most precise m{sub W} measurement to date. When combined with other measured electroweak parameters, this result further constrains the properties of new unobserved particles coupling to W and Z bosons.
Book Synopsis PDF and QCD Eects in the Precision Measurement of the W Boson Mass at CDF. by : D. P. Beecher
Download or read book PDF and QCD Eects in the Precision Measurement of the W Boson Mass at CDF. written by D. P. Beecher and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A sample of W \rightarrow ev (W \rightarrow \mu v) and Z 0 \rightarrow e +e - (Z 0 \rightarrow \mu +\mu -) events recorded by the CDF detector for pp- collisions at \sqrt(s-hat) = 1:96 TeV with a total integrated luminosity of 2.3 fb -1 are used to evaluate the systematic uncertainty in the determination of the W boson mass arising from uncertainties in the parton distribution functions and higher-order QCD effects. The systematic contribution of PDFs is determined to be 10 MeV for MSTW2008 NLO and 12 MeV for CTEQ6.6. The total systematic contribution arising from higher-order QCD eects in 9 MeV. The unfolded Z0 transverse momentum distribution is presented, and estimates of parameters in a phenomenological model describing low transverse momentum Z 0 events are extracted.
Book Synopsis Measurement of the W Boson Mass with the ATLAS Detector by : Oleh Kivernyk
Download or read book Measurement of the W Boson Mass with the ATLAS Detector written by Oleh Kivernyk and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a measurement of the W boson mass with the ATLAS detector based on the data-set recorded by ATLAS in 2011 at a centre-of-mass energy of 7 TeV, and corresponding to 4.6 inverse femtobarn of integrated luminosity. Measurements are performed through template fits to the transverse momentum distributions of charged leptons and to transverse mass distributions of the W boson, in electron and muon decay modes in various kinematic categories. The individual measurements are found to be consistent and their combination leads to a value of m_W = 80371.1 ± 18.6 MeV. The measured value of the W boson mass is compatible with the current world average of m_W = 80385 ± 15 MeV. The uncertainty is competitive with the current most precise measurements performed by the CDF and D0 collaborations.
Book Synopsis Precision Measurement of the Mass and Width of the W Boson at CDF. by :
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.
Book Synopsis Measurement of the W Boson Mass by :
Download or read book Measurement of the W Boson Mass written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of the W boson mass in W → e[nu] decays using 1 fb−1 of data collected with the D0 detector during Run II of the Fermilab Tevatron collider. With a sample of 499830 W → e[nu] candidate events, they measure M{sub W} = 80.401 ± 0.043 GeV. This is the most precise measurement from a single experiment.
Book Synopsis A Precision Measurement of the W Boson Mass with 1 Inverse Femtobarn of DZero Run IIa Data by :
Download or read book A Precision Measurement of the W Boson Mass with 1 Inverse Femtobarn of DZero Run IIa Data written by and published by . This book was released on 2009 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is a detailed presentation of a precision measurement of the mass of the W boson. It has been obtained by analyzing W → e[nu] decays. The data used for this analysis was collected from 2002 to 2006 with the D0 detector, during Run IIa of the Fermilab Tevatron collider. It corresponds to a total integrated luminosity of 1 fb−1. With a sample of 499,830 W → e[nu] candidate events, we obtain a mass measurement of M{sub W} = 80.401 ± 0.043 GeV. This is the most precise measurement from a single experiment to date.
Book Synopsis Precision Measurement of the Mass and Width of the W Boson at CDF. by : S. Malik
Download or read book Precision Measurement of the Mass and Width of the W Boson at CDF. written by S. Malik and published by . This book was released on 2010 with total page 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 \rightarrow e+e- 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.
Book Synopsis Towards a First Precision Measurement of the Mass of the W-boson with the ATLAS Detector at Root Out S by : Christoph Zimmermann
Download or read book Towards a First Precision Measurement of the Mass of the W-boson with the ATLAS Detector at Root Out S written by Christoph Zimmermann and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PDF and QCD Effects in the Precision Measurement of the W Boson Mass at CDF. by :
Download or read book PDF and QCD Effects in the Precision Measurement of the W Boson Mass at CDF. written by and published by . This book was released on 2011 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sample of W → ev (W → [mu][nu]) and Z0 → e+e- (Z0 → [mu]+[mu]-) events recorded by the CDF detector for p$\bar{p}$ collisions at √s = 1.96 TeV are used to evaluate the systematic uncertainty in the determination of the W boson mass arising from uncertainties in the parton distribution functions and higher-order QCD effects. The systematic contribution of PDFs is determined to be 10 MeV/c2 for MSTW2008 NLO and 12 MeV/c2 for CTEQ6.6. The total systematic contribution arising from higher-order QCD effects in 9 MeV/c2. The Z0 events are used to extract improved estimates of the phenomenological parameters in the BLNY model that describes low transverse momentum.
Book Synopsis Precision Measurement of the Mass and Width of the W Boson at CDF by : Sarah Alam Malik
Download or read book Precision Measurement of the Mass and Width of the W Boson at CDF written by Sarah Alam Malik and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
