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U


unblinding

To unveil the exact numerical result of a measurement that has been hidden (blinded). A blind analysis is designed to avoid experimenter's bias in a measurement.

Reference Link (http://www.slac.stanford.edu/babar-internal/BAD/doc/download?file=00091.002.ps)


Upsilon(4s) (Y(4s))

A meson containing a b-bbar quark pair, decaying dominantly to either B+B- or B0B0bar. PEP-II typically operates at the Upsilon(4s) resonance energy.

Reference Link (http://pdg.lbl.gov/2004/tables/mxxxbb.ps)

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All comments, requests, and corrections are welcome. Send them by e-mail.


Project Lead: Ray Cowan
Project Supervision: Douglas Smith (SLAC Computing Services)

Last significant update: 10-Sept-2002