![Measurement of trilinear gauge boson W[sup]+W[sup]-Z/[gamma] couplings with the DELPHI spectrometer PDF](https://books.google.com/books/content/images/frontcover/dZLaOgAACAAJ?fife=w150-h200)
Author: Borut Paul KerševanPublisher:
ISBN:
Category :
Languages : en
Pages : 217
Book Description
Measurement of trilinear gauge boson W[sup]+W[sup]-Z/[gamma] couplings with the DELPHI spectrometer
![Measurement of trilinear gauge boson W[sup]+W[sup]-Z/[gamma] couplings with the DELPHI spectrometer PDF](https://books.google.com/books/content/images/frontcover/dZLaOgAACAAJ?fife=w80-h100)
Author: Borut Paul KerševanMeasurements of Trilinear Gauge Boson Couplings
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Direct measurements of the trilinear gauge boson couplings by the D0 collaboration at Fermilab are reported. Limits on the anomalous couplings were obtained at a 95% CL from four diboson production processes: W[gamma] production with the W boson decaying to e[nu] or[mu][nu], WW production with both of the W bosons decaying to e[nu] or[mu][nu], WW/WZ production with one W boson decaying to e[nu] and the other W or Z boson decaying to two jets, and Z[gamma] production with the Z boson decaying to ee, [mu][mu], or[nu][nu]. Limits were also obtained from a combined fit to W[gamma], WW[yields] dileptons and WW/WZ[yields] e[nu]jj data samples.
Trilinear Gauge Boson Couplings and Vector Boson Pair Production
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Languages : en
Pages :
Book Description
The trilinear couplings appear as the three gauge boson vertices and can be measured by studying the gauge boson pair production processes. The measurement of the coupling parameters is one of the few remaining crucial tests of the Standard Model. D0 has studied W[gamma], Z[gamma], WW, and WZ production and found no evidence of anomalous production. In this paper we review all the current results from D0 data.
Measurement of Trilinear Gauge Boson Couplings from at {\boldmath$\sqrt{s}
Author: Publisher:
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Languages : en
Pages : 14
Book Description
We present a direct measurement of trilinear gauge boson couplings at gammaWW and ZWW vertices in WW and WZ events produced in p{bar p} collisions at (square root)s = 1.96 TeV. We consider events with one electron or muon, missing transverse energy, and at least two jets. The data were collected using the D0 detector and correspond to 1.1 fb−1 of integrated luminosity. Considering two different relations between the couplings at the gammaWW and ZWW vertices, we measure these couplings at 68% C.L. to be kappa{sub gamma} = 1.07{sub -0.29}{sup +0.26}, lambda = 0.00{sub -0.06}{sup +0.06}, and g1{sup Z} = 1.04{sup -0.09}{sup +0.09} in a scenario respecting SU(2){sub L}[direct-product]U(1){sub Y} gauge symmetry and kappa = 1.04{sub -0.11}{sup +0.11} and lambda=0.00{sub -0.06}{sup +0.06} in an 'equal couplings' scenario.
Tevatron Results on Gauge Boson Couplings
Author: Publisher:
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Languages : en
Pages : 16
Book Description
Direct measurements of the trilinear gauge boson couplings by the CDF and D0 collaborations at Fermilab are reviewed. Limits on the anomalous couplings were obtained at a 95% CL from four diboson production processes: W[gamma] production with the subsequent W boson decay to e[nu] or [mu][nu], WW production with both the W boson decaying to e[nu] or [mu][nu], WW/WZ production with one of the gauge bosons decaying leptonically and the other gauge boson decaying to two jets, and Z[gamma] production with the subsequent Z boson decay to ee, [mu][mu], or [nu][nu]. Limits were also obtained by a combined fit to W[gamma], WW→dileptons and WW/WZ semileptonic data samples.
קונטרס שבועות תשס"ד-תשס"ה
Author: A Measurement of Trilinear Gauge Couplings Using the DELPHI Detector
Author: Ulrich ParzefallMeasurements of the Trilinear Gauge Boson Couplings from Diboson Production at
Author: Measurement of the Z Gamma ---] Nu Anti-nu Gamma Cross Section and Limits on Anomalous Z Z Gamma and Z Gamma Gamma Couplings in P Anti-p Collisions at S**1/2
![Measurement of the Z Gamma ---] Nu Anti-nu Gamma Cross Section and Limits on Anomalous Z Z Gamma and Z Gamma Gamma Couplings in P Anti-p Collisions at S**1/2 PDF](https://books.google.com/books/content/images/frontcover/37NbwAEACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
We present the first observation of the Z[gamma] →[nu]{bar [nu]}[gamma] process at the Tevatron at 5.1 standard deviations significance, based on 3.6 fb−1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron p{bar p} Collider at √s = 1.96 TeV. The measured Z[gamma] cross section multiplied by the branching fraction of Z → {nu}{bar {nu}} is 32 ± 9(stat. + syst.) ± 2(lumi.) fb for the photon E{sub T} > 90 GeV. It is in agreement with the standard model prediction of 39 ± 4 fb. We set the most restrictive limits on anomalous trilinear Z[gamma][gamma] and ZZ[gamma] gauge boson couplings at a hadron collider to date, with three constraints being the world's strongest.
The Study of E"+e"-->mu"+mu"-(gamma) and the Measurement of Trilinear Gauge Couplings at LEP2 Using the DELPHI Detector
mu"+mu"-(gamma) and the Measurement of Trilinear Gauge Couplings at LEP2 Using the DELPHI Detector PDF">
Author: James Frederick LibbyPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description