[Halld-cpp] [Revised Logentry] Proposal for CPP monitoring plot

[aaustreg at jlab.org]

Logentry Text:
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I created a plugin which selects pi+pi- pairs with a missing lead nucleus and performs the kinematic fit. A nice peak can be seen at the Pb mass (193.7GeV) using the measured 4-vectors. The number of rho events is extracted by a BW fit on top of an exponential background.The extracted polarization is probably diluted by background.

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