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Measurements Of The Mathrm Pp To W Gammagamma And Mathrm Pp To Z Gammagamma Cross Sections And Limits On Anomalous Quartic Gauge Couplings At Sqrts
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Book Synopsis Measurements of the $\mathrm{ Pp \to W \gamma\gamma }$ and $\mathrm{ Pp \to Z \gamma\gamma }$ Cross Sections and Limits on Anomalous Quartic Gauge Couplings at $\sqrt{s} by :
Download or read book Measurements of the $\mathrm{ Pp \to W \gamma\gamma }$ and $\mathrm{ Pp \to Z \gamma\gamma }$ Cross Sections and Limits on Anomalous Quartic Gauge Couplings at $\sqrt{s} written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements are presented of $ \mathrm{ W \gamma\gamma } $ and $ \mathrm{ Z \gamma\gamma } $ production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of 19.4 fb$^{-1}$ collected with the CMS detector at a center-of-mass energy of 8 TeV. Signal is identified through the $\mathrm{ W } \to \ell\nu$ and $\mathrm{ Z }\to\ell\ell$ decay modes, where $\ell$ is a muon or an electron. The production of $ \mathrm{ W \gamma\gamma } $ and $ \mathrm{ Z \gamma\gamma } $, measured with significances of 2.6 and 5.9 standard deviations, respectively, is consistent with standard model predictions. In addition, limits on anomalous quartic gauge couplings in $ \mathrm{ W \gamma\gamma } $ production are determined in the context of a dimension-8 effective field theory.
Book Synopsis A Measurement of the Z Gamma Cross Section and Limits on Anomalous Triple Gauge Couplings at Square Root of S by :
Download or read book A Measurement of the Z Gamma Cross Section and Limits on Anomalous Triple Gauge Couplings at Square Root of S written by and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the properties of the Z$\gamma$ diboson system is presented using 5.0 fb$^{-1}$ of proton-proton collision data from the LHC using the CMS detector. The pp $\rightarrow Z(\rightarrow\mu \mu) \gamma$ and pp $\rightarrow Z(\rightarrow e e) \gamma$ production cross sections are measured within the fiducial volume of CMS with a combined measurement of $\sigma_{\ell\ell\gamma} = 5.33 \pm 0.08 ~\text{(stat.)} \pm 0.25 ~\text{(syst.)} \pm 0.12 ~\text{(lumi.)}$ pb that is in good agreement with Standard Model predictions. Upper limits on the neutral anomalous triple gauge couplings set are the most stringent limits on these couplings to date, with allowed regions: $-0.010
Book Synopsis Measurements of the Pp OWγγ and Pp OZγγ Cross Sections and Limits on Anomalous Quartic Gauge Couplings at √s by :
Download or read book Measurements of the Pp OWγγ and Pp OZγγ Cross Sections and Limits on Anomalous Quartic Gauge Couplings at √s written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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 by :
Download or read book 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 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 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.
Book Synopsis A Measurement of Z(vv̄)[photon] Cross Section and Limits on Anomalous Triple Gauge Couplings at [square Root Of] by : Shruti Shrestha
Download or read book A Measurement of Z(vv̄)[photon] Cross Section and Limits on Anomalous Triple Gauge Couplings at [square Root Of] written by Shruti Shrestha and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the first measurement of Z(vv̄)[photon] cross section in pp collisions at [square root of]s = 7 TeV has been done using data collected by the CMS detector. The measured cross section is 21.3 ± 4.2 (stat.) ± 4.3 (syst.) ± 0.5 (lumi.) fb. This measurement is based on the observations of events with missing transverse energy in excess of 130 GeV and photon in the rapidity range [eta]
Book Synopsis Measurements of Pp→ZZ Production Cross Sections and Constraints on Anomalous Triple Gauge Couplings at √s by : Albert M. Sirunyan
Download or read book Measurements of Pp→ZZ Production Cross Sections and Constraints on Anomalous Triple Gauge Couplings at √s written by Albert M. Sirunyan and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the W Gamma and Z Gamma Inclusive Cross Sections in Pp Collisions at $\sqrt{s}$ by :
Download or read book Measurement of the W Gamma and Z Gamma Inclusive Cross Sections in Pp Collisions at $\sqrt{s}$ written by and published by . This book was released on 2013 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the $W+̂W-̂$ Cross Section in Pp Collisions at $\sqrt{s}$ by :
Download or read book Measurement of the $W+̂W-̂$ Cross Section in Pp Collisions at $\sqrt{s}$ written by and published by . This book was released on 2016 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of the W boson pair production cross section in proton-proton collisions at √ s = 8 TeV is presented. The data we collected with the CMS detector at the LHC correspond to an integrated luminosity of 19.4 fb-1 . The W+W- candidates are selected from events with two charged leptons, electrons or muons, and large missing transverse energy. The measured W+W- cross section is 60.1 ± 0.9 (stat) ± 3.2 (exp) ± 3.1 (theo) ± 1.6 (lumi) pb = 60.1 ± 4.8 pb, consistent with the standard model prediction. The W+W-cross sections are also measured in two different fiducial phase space regions. In addition, the normalized differential cross section is measured as a function of kinematic variables of the final-state charged leptons and compared with several perturbative QCD predictions. Limits on anomalous gauge couplings associated with dimension-six operators are also given in the framework of an effective field theory. Finally, the corresponding 95% confidence level intervals are -5.7 csubWWW/sub/?sup2/sup 5.9 TeVsup-2/sup, -11.4 csubW/sub/?sup2/sup 5.4 TeVsup-2/sup , -29.2 csubB
Book Synopsis Differential Cross Sections for [gamma] [gamma] → P P - in the C.m. Energy Range from 2.0 to 3.1 GeV by :
Download or read book Differential Cross Sections for [gamma] [gamma] → P P - in the C.m. Energy Range from 2.0 to 3.1 GeV written by and published by . This book was released on 1983 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cross Section Measurement of the Process [gamma Gamma->p Pbar] in Untagged Events at [sqrt](s) by : Teresa Barillari
Download or read book Cross Section Measurement of the Process [gamma Gamma->p Pbar] in Untagged Events at [sqrt](s) written by Teresa Barillari and published by . This book was released on 2001 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le collisioneur LEP au CERN est utilisé pour étudier les collisions de deux photons quasi-réels e+e−->e+e−[gamma gamma]->e+e−X. L'échantillon de données pour la réaction e+e−->e+e−[gamma gamma]->e+e− [p pbar] a été collecté par le détecteur OPAL à une énergie dans le centre de masse de [sqrt](s)=183 et 189 GeV. Le processus [gamma gamma]->[p pbar] permet de tester les prédictions fournies par QED et QCD. Les mesures de section efficace obtenues par OPAL couvrent une région du centre de masse de deux photons, "W", entre 2.15 GeV"W"3.95 GeV et l'angle polaire dans le centre de masse du système [gamma gamma]-[p pbar] est restreint à I(cos theta*)I
Book Synopsis Measurement of the Inclusive W and Z Production Cross Sections in Pp Collisions at $ \sqrt {s} by :
Download or read book Measurement of the Inclusive W and Z Production Cross Sections in Pp Collisions at $ \sqrt {s} written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of inclusive W and Z production cross sections in pp collisions at sqrt(s)=7 TeV is presented. The electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 inverse picobarns. The measured inclusive cross sections are sigma(pp-> WX) B(W-> l nu) = 10.30 +/- 0.02 (stat.) +/- 0.10 (syst.) +/- 0.10 (th.) +/- 0.41 (lumi.) nb and sigma(pp -> ZX) B(Z-> l+̂l-̂) = 0.974 +/- 0.007 (stat.) +/- 0.007 (syst.) +/- 0.018 (th.) +/- 0.039 (lumi.) nb, limited to the dilepton invariant mass range 60 to 120 GeV. The luminosity-independent cross section ratios are [sigma(pp->WX) B(W-> l nu)]/[sigma(pp-> ZX) B(Z->l+̂l-̂)] = 10.54 +/- 0.07 (stat.) +/- 0.08 (syst.) +/- 0.16 (th.) and [sigma(pp->W+̂X) B(W+̂ -> l+̂nu)] / [sigma(pp->W-̂ X) B(W-̂ -> l-̂ nu)] = 1.421 +/- 0.006 (stat.) +/- 0.014 (syst.) +/- 0.029 (th.). The measured values agree with next-to-next-to-leading order QCD cross section calculations based on recent parton distribution functions.
Book Synopsis A Search for WW Gamma and WZ Gamma Production and Constraints on Anomalous Quartic Gauge Couplings in Pp Collisions at Sqrt(s) by :
Download or read book A Search for WW Gamma and WZ Gamma Production and Constraints on Anomalous Quartic Gauge Couplings in Pp Collisions at Sqrt(s) written by and published by . This book was released on 2014 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Z Gamma Production and Limits on Anomalous Z Z Gamma and Z Gamma Gamma Couplings in Panti-p Collisions at S**1/2 by :
Download or read book Z Gamma Production and Limits on Anomalous Z Z Gamma and Z Gamma Gamma Couplings in Panti-p Collisions at S**1/2 written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Inclusive W and Z Cross Sections in Pp Collisions at Sqrt(s) by :
Download or read book Measurements of Inclusive W and Z Cross Sections in Pp Collisions at Sqrt(s) written by and published by . This book was released on 2011 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of inclusive W and Z boson production cross sections in pp collisions at sqrt(s)=7 TeV are presented, based on 2.9 inverse picobarns of data recorded by the CMS detector at the LHC. The measurements, performed in the electron and muon decay channels, are combined to give sigma(pp to WX) times B(W to muon or electron + neutrino) = 9.95 \pm 0.07(stat.) \pm 0.28(syst.) \pm 1.09(lumi.) nb and sigma(pp to ZX) times B(Z to oppositely charged muon or electron pairs) = 0.931 \pm 0.026(stat.) \pm 0.023(syst.) \pm 0.102(lumi.) nb. Theoretical predictions, calculated at the next-to-next-to-leading order in QCD using recent parton distribution functions, are in agreement with the measured cross sections. Ratios of cross sections, which incur an experimental systematic uncertainty of less than 4%, are also reported.
Book Synopsis Measurement of the W Gamma --] Mu Nu Gamma Cross-Section, Limits on Anomalous Trilinear Vector Boson Couplings, and the Radiation Amplitude Zero in P Anti-p Collisionsat S**(1/2) by : Andrew Warren Askew
Download or read book Measurement of the W Gamma --] Mu Nu Gamma Cross-Section, Limits on Anomalous Trilinear Vector Boson Couplings, and the Radiation Amplitude Zero in P Anti-p Collisionsat S**(1/2) written by Andrew Warren Askew and published by . This book was released on 2004 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis details the measurement of the p{bar p} {yields} W{gamma} + X {yields} {mu}{nu}{gamma} + X cross section at {radical}s = 1.96 TeV using the D0 detector at Fermilab, in 134.5 pb{sup -1} of integrated luminosity. From the photon E{sub T} spectrum limits on anomalous couplings of the photon to the W are obtained. At 95% confidence level, limits of -1.05
Book Synopsis Measurement of the Inclusive Pp->Z/gamma*->e+e- Cross Section at Sqrt(s) by : Sebastian Schmitt
Download or read book Measurement of the Inclusive Pp->Z/gamma*->e+e- Cross Section at Sqrt(s) written by Sebastian Schmitt and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the W Gamma --] Mu Nu Gamma Cross-Section, Limits on Anomalous Trilinear Vector Boson Couplings, and the Radiation Amplitude Zero in P Anti-p Collisions at S**(1/2) by :
Download or read book Measurement of the W Gamma --] Mu Nu Gamma Cross-Section, Limits on Anomalous Trilinear Vector Boson Couplings, and the Radiation Amplitude Zero in P Anti-p Collisions at S**(1/2) written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Not Provided.
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