[Hps-analysis] HPS Analysis meeting Tuesday Feb. 5 @ 9am/noon PST/EST

[Yale, Bradley T]

Here are my normalizations for MC and Data, asked about in the meeting.

Wab-beam-tri MC:
L_mc = (5e5 bunches)*(2500 e-/bunch)*(4.062e-4 cm target)*(6.306e-2 nuclei/(cm-barn))*(num_slic_files) <--- (=#recon_files*10)

Pair1 Data:
L_data = (("goodQ_atnom"e-9/1.6e-19)*(4.062e-4)*(6.306e-2))

Then 1000/L to get cross section in mbarns for the plots (just because it happens to be close to '1' for tritrig).
So for data, I actually use the reported "good" charge in the run wiki, not the reported luminosity, but they should be equivalent.
Shown in the meeting: Run 7783, file 0 = 2939.405nC

The target thickness comes from an areal density of 0.00782 g/cm2 found here (via Clive):
https://misportal.jlab.org/mis/physics/hps_notes/viewFile.cfm/2015-008.pdf?documentId=11
The same value is used to generate MC.

-Bradley


________________________________
From: Hps-analysis <hps-analysis-bounces at jlab.org> on behalf of Graham, Mathew Thomas <mgraham at slac.stanford.edu>
Sent: Tuesday, February 5, 2019 8:41 AM
To: hps-analysis at jlab.org
Subject: [Hps-analysis] HPS Analysis meeting Tuesday Feb. 5 @ 9am/noon PST/EST


Hi All,

We’ll have our meeting today at the usual coordinates.

Agenda

  *   2016 Pass-4 [(question)]  Status – Rafo
  *   DST Status – Maurik
  *   2016 Bump-hunt Status – Rafo
  *   2016 Vertexing Status
     *   Cut optimization: Rad/(Tri+WAB) – Bradley
     *   Issue with vertex cuts in recon – MattS
  *   AOB

==========================================================


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Thanks, Matt & Nathan
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