58,665 research outputs found
Fixed-Target CP-Violation Experiments at Fermilab
Studies of CP violation, for 30 years focused primarily on the neutral K
meson, are on the threshold of a new era as experiments approach Standard-Model
sensitivities in decays of beauty, charm, and hyperons. The array of
heavy-quark experiments approved and planned at Fermilab may lead to a
significant breakthrough in the next five to ten years.Comment: Revised and expanded for greater clarity and completeness. 15 pages,
6 PostScript figure
Remarks on Muon Experiments and Possible CP Violation in Decay
The first experimental limit on CP violation in pi -> mu -> e decay is
extracted from published results of the CERN g-2 experiment.Comment: 2 pages, LaTeX, submitted to Phys. Rev.
Charmonium Production in Fermilab E789
Using a sample of >10^5 J/psi to mu+mu- decays, Fermilab experiment 789 has
studied production of J/psi and psi-prime in 800-GeV proton-nucleon collisions.
Differential cross sections and nuclear dependences have been measured for
charmonium as well as for charm and beauty production. While charm and beauty
production are consistent with perturbative QCD calculations, charmonium cross
sections exceed the predictions of the color-singlet model by large factors,
suggesting that additional mechanisms (such as color-octet production) may play
important roles. Nuclear dependences of production cross sections may offer a
new tool for the detailed understanding of charmonium production.Comment: Invited talk presented at the Quarkonium Physics Workshop, University
of Illinois at Chicago, June 13-15, 1996. 10 pages, LaTeX, including 8
PostScript figure
High-Impact Charm Physics at the Turn of the Millennium
I review the sensitivities achieved by and projected for fixed-target charm
experiments in CP violation, flavor-changing neutral-current and
lepton-number-violating decays, and mixing, and I describe the Charm2000
experiment intended to run at Fermilab in the Year ~2000. If approved,
Charm2000 will in many of these areas exceed the sensitivities projected for a
Tau/Charm Factory, but the Tau/Charm Factory retains certain qualitative
advantages.Comment: 23 pages, 3 Postscript figures (minor revisions, mostly
typographical, relative to version of 8/31
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