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The status of theta13 measurements from Daya Bay, RENO and Double Chooz experiments is reviewed., Comment: Presented at the 2013 Flavor Physics and CP Violation (FPCP-2013), Buzios, Rio de Janeiro, Brazil, May 19-24 2013, 8 pages, 4 figures

Flavor changing neutral currents (FCNCs) in the charm system are highly suppressed in the standard model (SM). The theoretical strategies used to suppress FCNCs induced by supersymmetry in the strange and beauty systems need not apply to the charm system. The charm changing neutral current decay D^0-> mu^+ mu^- is studied phenomenologically in the framework of supersymmetric extensions of the standard model. It is found that the decay branching ratio can be enhanced to about 10^{-10}, by having heavy non-degenerate supersymmetric strange or bottom quarks, with negligible effect on the strange and beauty FCNC processes. The D^0 mixing rate also receives enhancement in these models, but is generally below the present experimental limit. The prospects for measuring D^0-> mu^+ mu^- to 10^{-10} levels, a definitive signature of new physics beyond the SM, in the near future are discussed., Comment: 10 pages, 5 figures.Invited talk at the Richard Arnowitt Fest, Texas A&M University, College Station, April 5-8, 1998. Published in Proceedings of the Richard Arnowitt Fest, Relativity, Particle Physics, and Cosmology, edited by R. E. Allen, World Scientific, 1999

Spatial distributions of persistent magnetic field trapped by sintered and melt-textured ceramic-type high-temperature superconductor (HTS) samples have been studied. The trapped field can be reproduced by a model of the current consisting of two components: (1) a surface current Js and (2) a uniform volume current Jv. This Js + Jv model gives a satisfactory account of the spatial distribution of the magnetic field trapped by different types of HTS samples. The magnetic moment can be calculated, based on the Js + Jv model, and the result agrees well with that measured by standard vibrating sample magnetometer (VSM). As a consequence, Jc predicted by VSM methods agrees with Jc predicted from the Js + Jv model. The field mapping method described is also useful to reveal the granular structure of large HTS samples and regions of weak links.

A study of persistent, trapped magnetic field has been pursued with high-temperature superconducting (HTS) materials. The main effort is to study the feasibility of utilization of HTS to fabricate magnets for various devices. The trapped field, when not in saturation, is proportional to the applied field. Thus, it should be possible to replicate complicated field configurations with melt-textured YBa2Cu3O7 (MT-Y123) material, bypassing the need for HTS wires. Presently, materials have been developed from which magnets of 1.5 T, at 77 K, can be fabricated. Much higher field is available at lower operating temperature. Stability of a few percent per year is readily attainable. Results of studies on prototype motors and minimagnets are reported.