Over the past three years, Lockman has directed the development of the BaBar detector simulation program. The particle-tracking part of the simulation, bbsim, which is based on the Geant3.21 toolkit, is now being replaced by a C++ application layer based on the much more extensive object-oriented Geant4 toolkit. The Geant4-based code is currently being validated and is expected to be used in production mode by January, 2001.
Lockman is coordinating the BaBar physics efforts at SCIPP and working with SCIPP colleagues on searches for (i) D^0 bar D^0-mixing and (ii) CP violation in singly Cabibbo-suppressed D-meson decays A non-zero signal in either case might be an indication of new physics beyond the standard model. Process (ii) also provides an independent check of CP measurements in B decays. These measurements benefit from the high luminosity storage ring and precision vertexing, tracking, particle ID and calorimetry of the BaBar detector.
Collaboration Involvement:
BaBar
Simulation studies of tracking systems at very high luminosity, D. Adams et al., Nucl. Instrum. Meth. A372, 160 (1996).
Partial wave analysis of J/psi rightarrow gamma K^0_s K^+- pi^-+, Z. Bai et al., Phys. Rev. Lett. 65, 2507 (1990).
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