The CLEO-c Research Program

The CLEO-c research program will include studies of leptonic, semileptonic and hadronic charm decays, searches for exotic and gluonic matter, and test for physics beyond the Standard Model. In the summer of 2003 the experiment and the CESR accelerator were modified to operate at center-of-mass energies between 3 and 5 GeV. Data at the psi(3770) resonance were recorded with the CLEO-c detector in September 2003. beginning a new era in the exploration of the charm sector.Comment: 5 pages, also available http://www.lns.cornell.edu/public/TALK/2003/, Presented at 9th International Conference on B Physics at Hadron Machines(Beauty2003), Pittsburgh, PA, Oct. 14-18, 200

Top quark precision physics at the International Linear Collider

Top quark production in the process $e^+e^- \rightarrow t\bar{t}$ at a future linear electron positron collider with polarized beams is a powerful tool to determine the scale of new physics. Studies at the \ttbar threshold will allow for precise determination of the top quark mass in a well defined theoretical framework. At higher energies vector, axial vector and tensorial CP conserving couplings can be separately determined for the photon and the $Z^0$ component in the electro-weak production process. The sensitivity to new physics would be dramatically improved w.r.t. to what expected from LHC for electroweak couplings.Comment: White paper for Snowmass CSS 201

New results for a photon-photon collider

We present new results from studies in progress on physics at a two-photon collider. We report on the sensitivity to top squark parameters of MSSM Higgs boson production in two-photon collisions; Higgs boson decay to two photons; radion production in models of warped extra dimensions; chargino pair production; sensitivity to the trilinear Higgs boson coupling; charged Higgs boson pair production; and we discuss the backgrounds produced by resolved photon-photon interactions.Comment: 17 pages, 15 figure

Study of \Lambda - \Lambdabar Oscillation in quantum coherent \Lambda\Lambdabar state by using J/\psi \to \Lambda \bar{\Lambda}$ decay

We discuss the possibility of searching for the \Lam - \Lamb oscillations for coherent \Lam\Lamb production in the J/\psi \to \Lam \Lamb decay process. The sensitivity of measurement of \Lam -\Lamb oscillation in the external field at BES-III experiment is considered. These considerations indicate an alternative way to probe the $\Delta B =2$ amplitude in addition to neutron oscillation experiments. Both coherent and time-dependent information can be used to extract the \Lam-\Lamb oscillation parameter. With one year's luminosity at BES-III, we can set an upper limit of \delta m_{\Lam \Lamb} < 10^{-15} MeV at 90% confidence level, corresponding to about $10^{-6}$ s of \Lam-\Lamb oscillation time.Comment: 4 pages, no figure, minor corrections to improve grammar, published in Phys.Rev.D as Rapid Communication

First ADS analysis of B- -> D0K- decays in hadron collisions

Proceedings of DISCRETE 2010, Symposium on Prospects in the Physics of Discrete Symmetries, Rome (IT), 6-11 December 2010Comment: 7 pages, 5 figure