36 research outputs found
The deuteron: structure and form factors
A brief review of the history of the discovery of the deuteron in provided.
The current status of both experiment and theory for the elastic electron
scattering is then presented.Comment: 80 pages, 33 figures, submited to Advances in Nuclear Physic
Evidence of Color Coherence Effects in W+jets Events from ppbar Collisions at sqrt(s) = 1.8 TeV
We report the results of a study of color coherence effects in ppbar
collisions based on data collected by the D0 detector during the 1994-1995 run
of the Fermilab Tevatron Collider, at a center of mass energy sqrt(s) = 1.8
TeV. Initial-to-final state color interference effects are studied by examining
particle distribution patterns in events with a W boson and at least one jet.
The data are compared to Monte Carlo simulations with different color coherence
implementations and to an analytic modified-leading-logarithm perturbative
calculation based on the local parton-hadron duality hypothesis.Comment: 13 pages, 6 figures. Submitted to Physics Letters
Small Angle Muon and Bottom Quark Production in pbarp Collisions at sqrt(s) = 1.8 TeV
This Letter describes a measurement of the muon cross section originating
from b quark decay in the forward rapidity range 2.4 < y(mu) < 3.2 in pbarp
collisions at sqrt(s) = 1.8 TeV. The data used in this analysis were collected
by the D0 experiment at the Fermilab Tevatron. We find that NLO QCD
calculations underestimate b quark production by a factor of four in the
forward rapidity region. A cross section measurement using muon+jet data has
been included in this version of the paper.Comment: 12 pages, 5 figures, submitted to PR
Search for narrow t(t)over-bar resonances in p(p)over-bar collisions at root s=1.8 TeV
A search for narrow resonances that decay into t (t) over bar pairs has been performed using 130 pb(-1) of data in the lepton + jets channel collected by the DO detector in p (p) over bar collisions at roots=1.8 TeV. There is no significant deviation observed from the standard-model predictions at a top-quark mass of 175 GeV/c(2). We therefore present upper limits at the 95% confidence level on the product of the production cross section and branching fraction to t (t) over bar for narrow resonances as a function of the resonance mass M-X. These limits are used to exclude the existence of a leptophobic top-color particle with mass M-X<560 GeV/c(2), using a theoretical cross section for a width Gamma(X)=0.012M(X)
The DO Silicon Microstrip Tracker
This paper describes the mechanical design, the readout chain, the
production, testing and the installation of the Silicon Microstrip Tracker of
the D0 experiment at the Fermilab Tevatron collider. In addition, description
of the performance of the detector during the experiment data collection
between 2001 and 2010 is provided