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

[Ilya Larin]

Very nice indicator.
Would be interesting to compare these plots for high and  low rate runs.
 Ilya

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От: Halld-cpp <halld-cpp-bounces at jlab.org> от имени aaustreg at jlab.org <aaustreg at jlab.org>
Отправлено: 1 июля 2022 г. 9:25
Кому: halld-cpp at jlab.org <halld-cpp at jlab.org>
Тема: [Halld-cpp] [Revised Logentry] Proposal for CPP monitoring plot

Proposal for CPP monitoring plot<https://logbooks.jlab.org/entry/4009446>

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Lognumber 4009446<https://logbooks.jlab.org/entry/4009446>. Submitted by aaustreg<https://logbooks.jlab.org/user/aaustreg> on Fri, 07/01/2022 - 09:07<https://logbooks.jlab.org/entries?start_date=1656677228&end_date=1656684428&book=HDLOG>.

Last updated on Fri, 07/01/2022 - 09:20

Logbooks:       HDLOG<https://logbooks.jlab.org/book/hdlog>

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.

[https://logbooks.jlab.org/files/styles/plentybig/public/2022/07/4009446/hists_cpp_100745_psi.PNG]
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