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A vertexer is a Beta operator. Given a list or tree of BtaCandidates it returns the most likely common vertex position, vertex momentum, and their errors.

Reference Link (http://www.slac.stanford.edu/BFROOT/www/doc/workbook/analysis/analysis.html#vertexing)

Vertexing/kinematic fitting is a mathematical procedure in which one uses physical constraints governing a particle interaction or decay to improve the measurements describing the process. Explicit formulations of these constraints are based on geometric intersections, mass, energy, momentum, etc.

Reference Link (http://www.slac.stanford.edu/BFROOT/www/doc/workbook/analysis/analysis.html#vertexing)

BaBar standard scanning ADC module.

One of the elements of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. Vub carries the CP-violating complex phase gamma. Its absolute value is experimentally constrained within the interval from 0.0029 to 0.0045

Reference Link (http://pdg.lbl.gov/2004/reviews/kmmixrpp.ps)

A realtime operating system developed by WindRiver(reg) that offers fast context switches and low interrupt latency. BaBar uses VxWorks in its VME based single board computers.

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Last significant update: 10-Sept-2002