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Showing 1 to 9 of 9 for “"muon channel"”.
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Measurement of cross sections in muon channel
Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2012-01-19T22:48:49Z No. of bitstreams: 1 1994_luchini.pdf: 9294204 bytes, checksum: dabee52c2be3421c531b6c5546bfc6b1 (MD5)
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Inclusive Electroweak measurements in the muon channel with pp collisions at [the square root of] s=7 TeV
… with the clean signature of W boson decay into a muon and neutrino and the Z boson decay into two muons, allow for precision measurement of their production within the first year of operation. Deviation of these values from standard model predictions gives a clear indication of new physics …
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A measurement of W boson-photon and Z boson-photon cross sections in the muon channel in 1.8 TeV proton-antiproton collisions
… ratios for W + $\gamma$ and Z + $\gamma$ in the muon channel in $\sqrt{s}$ = 1.8 TeV p-p collisions, from 3.54 $\pm$ 0.24 $pb\sp{-1}$ of muon W and Z data from the CDF 1988-89 Tevatron collider run. For photons in the central region ($\vert\eta\vert $ 5.0 GeV and lepton-photon angular separation …
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A measurement of σ•B(Z°→µ+µ-) in PP collisions at √S = 1.8 TEV
A measurement in the muon channel of Z° production cross sections time branching radios yields σ•B(Z°→µ+µ-) = 228 ± 22(stat) ± 19(sys) nb where the largest uncertainty comes from the statistics of the data sample. The Standard Model predictions agree with the above results.
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Search for the standard model Higgs Boson in the Z gamma channel
… into an electron-positron pair (electron channel) or muon-antimuon pair (muon channel), allows for accurate reconstructions of the Higgs boson mass and measurement of the Higgs to Z-[gamma] coupling. We explore selection criteria for the photon and the two leptons and provide preliminary …
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A MEASUREMENT OF Rμ = σ(W → μv)/σ(Z^0→ μ^+ μ^-) IN PP ̅ COLLISIONS AT √S = 1.8 TEV
A measurement in the muon channel of the ratio of W and Z production cross sections times branching ratios yields Rμ = σ(W → μv)/σ(Z^0→ μ^+ μ^-) = 9.8 ± 1.1(stat) ± 0.4(syst), where the statistics of the Z sample is the dominant uncertainty. The individual cross sections times branching ratios are …
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Characterizing the background in tt events with a J/ψ → µ −µ + in proton-proton collisions at √ s = 13 TeV using the ATLAS detector
… was determined to be overestimated in the muon channel but more accurately estimated in the electron channel in the signal region. This background lepton contribution was determined using the common methodology by the ATLAS experiment. The background contribution from J/ψ mesons was …
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Measurement of the differential angular distribution of the W boson produced in association with jets in proton-antiproton collisions at sqrt (s)= 1.8 TeV
… We extract measurements for the electron and muon channel W decays, and the statistical combination of the two. We also present the Standard Model prediction for the W angular coefficients Ai as a function of p}f, using a W +jet Monte Carlo event generator, which includes gluon loops. The …
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New physics searches in the ZZ sector with the ATLAS experiment
… themselves as an excess of events in ZZ diboson channels, and, if observed, would be a direct probe of new physics beyond the Standard Model. A set of criteria are outlined to select events recorded by ATLAS in two such channels, ZZ to llll(l = e, mu) and ZZ to llnunu. With 1 fb-1 of integrated …