The Tau-Charm Factory combines the optimum conditions to perform a high-precision investigation of the τ and ντ leptons, the c quark, and light-quark, glueball and hybrid spectroscopy. An overview of the broad physics program that this facility will address is presented. Physics Summary at the Marbella Workshop on the Tau-Charm Factory Marbella, Spain, June 1993 ∗ On leave of absence from Depar...

The rate of gluon splitting into c¯ c pairs in hadronic Z decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is g c¯ c = (3.26 ± 0.23(stat) ± 0.42(syst...

This brief note draws further attention to cross-hauling in regional input-output table estimation, and specifically identifies conceptual issues associated with Kronenberg?s CHARM method for adjusting input-output regionalization methods. Despite the shortcomings of the CHARM approach as it now stands, this is a very important line of research. I believe that progress made on the CHARM method ...

Important relations between basic parameters of a high-luminosity collider are discussed. As the result, it is shown that the maximum bunch spacing is limited by the beam current to clear the threshold of the bunch lengthening. In order to solve the short bunch spacing, the crab-crossing scheme is applied to a design of the ring with 2.2 GeV, 2 x 1O33 cm-2s-1 luminosity. *Work supported by Depa...

We present several results on hadronic D meson decays. We report on results from the scan of the energy region from 3970 MeV to 4260 MeV, which was used to determine an optimal energy to carry out the Ds physics program of CLEO-c. Improved measurements of inclusive and exclusive D and Ds branching fractions are presented. We also show results on Dalitz analyses of D+ → π+π−π+ using CLEO-c data ...

The possibilities and challenges for studying rare decays of the r with the large data samples from a tau-charm factory are discussed. These studies involve expected decays of the r like multihadronic channels, suppressed decays like 2nd class currents or Cabibbo suppression, and possible unexpected decays.

We present a study of the sensitivity to rare D decays of a Tau-Charm Factory detector. We consider both flavour changing neutral currents and family number violating decays, and evaluate the impact of varying the solid angle coverage, lepton identification and neutral hadron identification of the detector. We find that stringent demands must be made on the detector design in order to effective...

Previously, motivation for enhanced b → sg from new flavor physics has centered on discrepancies between theory and experiment. Here two experimental hints are considered: (1) updated measurements of the charm multiplicity and B(B → Xcc̄s) at the Υ(4S) imply B(B → Xno charm) ≈ 12.4 ± 5.6%, (2) the B → KX and B → K+/K−X branching fractions are in excess of conventional B → Xc → KX yields by about...