Measurement of the Z Boson Transverse Momentum Distribution in Pp̄ Collisions at [square Root]s
Author | : Zhi-Yu Jiang |
Publisher | : |
Total Pages | : 238 |
Release | : 1995 |
Genre | : Collisions (Nuclear physics) |
ISBN | : |
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Author | : Zhi-Yu Jiang |
Publisher | : |
Total Pages | : 238 |
Release | : 1995 |
Genre | : Collisions (Nuclear physics) |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 13 |
Release | : 1997 |
Genre | : |
ISBN | : |
The transverse momentum distributions of W and Z bosons produced in p{anti p} collisions at (square root)s = 1.8 TeV are measured with the D0 detector at Fermilab. The results are compared to QCD calculations which include soft gluon resummation. The transverse momentum distribution of the Z boson is consistent with the calculation of Ladinsky and Yuan, and is used to extract their non-perturbative parameter 92-
Author | : |
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Total Pages | : 264 |
Release | : 2011 |
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Two analyses are performed with the large samples of dielectron and dimuon events collected by the D0 experiment at the Fermilab Tevatron $p\bar{p}$ collider. The dilepton transverse momentum ($p_T$) distribution in $Z/\gamma^* → \ell^+\ell^-$ production is a powerful probe of Quantum chromodynamics. Until now, this distribution has been measured with limited precision. An alternative variable, $\phi^*_\eta$, is proposed due to its relatively low susceptibility to detector effects. The $\phi^*_\eta$, distribution of events with $Z/\gamma^* → \ell^+\ell^-$ invariant masses between 70 and 110 GeV, is measured in three bins of dilepton rapidity. This measurement, with 7.3 fb$^{-1}$ of data, is significantly more precise than previous measurements of the $p_T$ distribution. A state-of-the-art QCD Monte Carlo program is in modest agreement with the data. Using 8.6 fb$^{-1}$ of data, the $ZZ/\gamma^* → \nu\bar{\nu}\ell^+\ell^-$ and $WZ/\gamma^* → \ell\nu\ell^+\ell^-$ processes are studied, yielding production cross sections of, $\sigma(p\bar{p} \rightarrow ZZ/\gamma^*)$ = 1.64 $\pm$ 0.46 p b and $\sigma(p\bar{p} \rightarrow WZ/\gamma^*)$ = 4.46 $\pm$ 0.64 pb, for $Z/\gamma^* → \ell^+\ell^-$ invariant masses between 60 and 130 GeV. These are in agreement with Standard Model predictions.
Author | : Johnny Shing Tung Ng |
Publisher | : |
Total Pages | : 286 |
Release | : 1991 |
Genre | : Z bosons |
ISBN | : |
Author | : |
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Total Pages | : 142 |
Release | : 2007 |
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This dissertation describes a measurement of the shape of the boson transverse momentum distribution in p{bar p} 2!Z/[gamma]* 2!ee− + X events at a center-of-mass energy of 1.96 TeV. The measurement is made for events with electron-positron mass between 70