4,350 research outputs found
Top Physics from Run 1 and Run 2 Prospects at CDF
We present a summary of top quark physics results from Run 1 at CDF using the
Run 1 data sample of 106 pb. In addition to the precursory measurements
of the top quark mass and \ttbar cross section, we have performed a number of
other analyses which test the consistency of the \ttbar data sample with the
standard model (SM). Deviations from SM expectations could provide hints for
new physics. We find that the data are consistent with the SM. While the Run 1
data are statistically limited, we have shown that the systematic uncertainties
are under control and thus have layed the groundwork for higher precision tests
of the SM in Run 2. This report describes the Run 1 top quark analyses and
expectations and prospects for top quark measurements in Run 2.Comment: 3 page
Upsilon Decays at CLEO
Using data collected using the CLEO III detector, we present recent results
on decays of the resonances. We report on three
analyses. They are: (1) improved measurements of the muonic branching fraction
of the , (2) precision measurements of
and photonic transitions, and (3) new
measurements of decays to charmonium final states.}]Comment: 4 pages, 5 figures. Submitted to 32nd International Conference on
High-Energy Physics (ICHEP 04), Beijing, China, 16-22 Aug 200
Measurement of the Top Quark Mass
In this paper, we report on the most recent measurements of the top quark
mass, performed by the CDF and D0 collaborations at the Fermilab Tevatron. The
CDF collaboration has performed measurements of the top quark mass in three
decay channels from which the top quark mass is measured to be 175.6 +- 6.8
GeV/c^2. The D0 collaboration combines measurements from two decay channels to
obtain a top quark mass of 172.1 +- 7.1 GeV/c^2. Combining the measurements
from the two experiments, assuming a 2 GeV/c^2 correlated systematic
uncertainty, the measurement of the top quark mass at the Tevatron is 173.9 +-
5.2 GeV/c^2. This report presents the measurements of the top quark mass from
each of the decay channels which contribute to this measurement.Comment: To be published in the 33rd proceedings of the Recontres de Moriond,
Les Arcs, France, March 21-28, 1998. 6 pages, 3 figure
Design and Expected Performance of the BTeV RICH
The BTeV experiment is a b-physics experiment designed to conduct precision
tests of the CKM description of CP violation and study rare processes involving
bottom and charm hadrons. The experiment will be located in the C0 interaction
region at the Fermilab Tevatron, and is intended to begin data-taking around
2007-2008. One of the most important elements of the BTeV spectrometer is the
ring-imaging Cerenkov detector (RICH) which is used for particle
identification. In this article we describe the BTeV RICH and present its
expected performance.Comment: 5 pages, 5 figures. Proceedings of the RICH2002 Conference, Pylos,
Greece, June 5-10, 200
Performance of a C4F8O Gas Radiator Ring Imaging Cherenkov Detector Using Multi-anode Photomultiplier Tubes
We report on test results of a novel ring imaging Cherenkov (RICH) detection
system consisting of a 3 meter long gaseous C4F8O radiator, a focusing mirror,
and a photon detector array based on Hamamatsu multi-anode photomultiplier
tubes. This system was developed to identify charged particles in the momentum
range from 3-70 GeV/c for the BTeV experiment.Comment: 28 pages, 23 figures, submitted to Nuclear Instruments and Method
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