Searches For New Gauge Bosons Using The D0 Detector
Download Searches For New Gauge Bosons Using The D0 Detector full books in PDF, epub, and Kindle. Read online free Searches For New Gauge Bosons Using The D0 Detector ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2001 |
Genre | : |
ISBN | : |
We present the results of searches for additional gauge bosons beyond the W and Z bosons using the 1992-1993 Tevatron data set collected with the D0 detector. The signatures studied are W[prime][yields] e[nu], W[prime][yields][tau][nu] with[tau][yields] e[nu][bar[nu]], assuming stable neutrinos; W[sub R][yields] e+ X and W[sub R][yields] eejj, assuming massive neutrinos; and Z[prime][yields] ee. Lower limits on the W[prime] mass and Z[prime] mass at the 95% confidence level, and the mass exclusion contour in the W[sub R] mass vs. neutrino mass plane are presented.
Author | : |
Publisher | : |
Total Pages | : 9 |
Release | : 1996 |
Genre | : |
ISBN | : |
We report the results of searches at the Tevatron for first and second generation leptoquarks and for new charged gauge bosons. The data were collected with the D0 detector from {ital p{anti p}} collisions at (square root)s=1.8 TeV. No evidence for the existence of these particles is seen and mass limits are set. We report new preliminary results of a search for a heavy neutral gauge boson in the process Z(prime)-->{ital ee}, from an integrated luminosity of 105 pb−1. We exclude the existence of a Z(prime) of mass less than 670 GeV/c2, assuming a Z(prime) with the same coupling strengths to quarks and leptons as the standard model Z boson. 13 refs., 5 figs., 1 tab.
Author | : |
Publisher | : |
Total Pages | : 50 |
Release | : 1903 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 232 |
Release | : 2007 |
Genre | : |
ISBN | : |
Additional gauge bosons are introduced in many theoretical extensions to the Standard Model. A search for a new heavy charged gauge boson W' decaying into an electron and a neutrino is presented. The data used in this analysis was taken with the D0 detector at the Fermilab proton-antiproton collider at a center-of-mass energy of 1.96 TeV and corresponds to an integrated luminosity of about 1 fb-1. Since no significant excess is observed in the data, an upper limit is set on the production cross section times branching fraction [sigma]W'xBr (W' → ev). Using this limit, a W' boson with mass below ~1 TeV can be excluded at the 95% confidence level assuming that the new boson has the same couplings to fermions as the Standard Model W boson.
Author | : |
Publisher | : |
Total Pages | : 7 |
Release | : 2007 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2005 |
Genre | : |
ISBN | : |
The authors have searched for evidence of W[prime] [yields] e[nu] and Z[prime] [yields] ee in data collected with the D[O] detector at the Tevatron during the 1992--1993 p[anti p] collider run at [radical]s = 1.8 TeV. They exclude the existence of a W[prime] of mass less than 600 GeV/c[sup 2] and a Z[prime] of mass less than 480 GeV/c[sup 2] at the 95% confidence level, assuming standard model couplings to quarks and leptons.
Author | : |
Publisher | : |
Total Pages | : 10 |
Release | : 1994 |
Genre | : |
ISBN | : |
A measurement is described of the charge asymmetry in the pseudorapidity distribution of muons from W boson decay in proton- antiproton collisions at (square root)s = 1.8 TeV using the D0 detector. We also report on a search for extra gauge bosons in the electron decay channel. Mass limits of M{sub W}(prime)> 600 GeV and M{sub Z}(prime)> 440 GeV are obtained at 95% confidence level under the assumption of standard model couplings.
Author | : |
Publisher | : |
Total Pages | : 176 |
Release | : 2008 |
Genre | : |
ISBN | : |
The existence of a heavy partner of the Z boson, a so-called Z' boson, is proposed in many extensions of the Standard Model, including grand unified theories, extended tecnhicolor models, and models with extra dimensions. This dissertation describes a direct search in the di-electron invariant mass spectrum for evidence of Z' production. The analysis used 1.106 ± 0.067 fb-1 of data collected from 2002 to 2006 with the D0 detector, which studies p$\bar{p}$ interactions at a center-of-mass energy of p s = 1.96TeV. In the absence of a Z' signal, a 95% upper limit on the production cross section is set for a Z' decaying into dielectrons. The existence of a Z0 with mass less than 920 GeV is excluded at the 95% confidence level, assuming the sequential Z' model. This result represents a significant improvement over the most stringent published limit from a direct search to date, namely 850 GeV.
Author | : Azriel Goldschmidt |
Publisher | : |
Total Pages | : 260 |
Release | : 1996 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 130 |
Release | : 1996 |
Genre | : |
ISBN | : |