Difference between revisions of "Solenoid Current Studies"

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(Skim/Analysis Cuts)
Line 33: Line 33:
 
Everything else should probably be left to the BDT.
 
Everything else should probably be left to the BDT.
  
== <math>\gamma \, p ≈ \rightarrow p \, X(2000) \, \rightarrow p \, \omega \, \pi^{+} \, \pi^{-}</math> ==
+
== PYTHIA samples ==
 +
 
 +
The data used for the analysis is extracted from PYTHIA generated samples. The run number scheme is the following:
 +
 
 +
{| border="1" align="center"
 +
|+ PYTHIA Run Specifications
 +
! scope="col" | Run Number
 +
! scope="col" | Magnetic field map
 +
! scope="col" | EM background rate
 +
! scope="col" | Notes
 +
|-
 +
! scope="row" align="center" | 9001
 +
| 1350A || 1.1E7 || Standard DC2 production
 +
|-
 +
! scope="row" align="center" | 9002
 +
| 1350A || 5.5E7 || Standard DC2 production
 +
|-
 +
! scope="row" align="center" | 9003
 +
| 1350A || none || Standard DC2 production
 +
|-
 +
! scope="row" align="center" | 9004
 +
| 1500A || 1.1E7 ||
 +
|-
 +
! scope="row" align="center" | 9005
 +
| 1500A || 5.5E7 ||
 +
|-
 +
! scope="row" align="center" | 9006
 +
| 1500A || none ||
 +
|-
 +
! scope="row" align="center" | 9007
 +
| 1200A || 1.1E7 ||
 +
|-
 +
! scope="row" align="center" | 9008
 +
| 1200A || 5.5E7 ||
 +
|-
 +
! scope="row" align="center" | 9009
 +
| 1200A || none ||
 +
|-
 +
|}
 +
 
 +
== genr8 phase space samples ==
 +
 
 +
=== <math>\gamma \, p ≈ \rightarrow p \, X(2000) \, \rightarrow p \, \omega \, \pi^{+} \, \pi^{-}</math> ===
  
 
* Run Number: 7001
 
* Run Number: 7001
Line 41: Line 83:
 
* HDGEANT input (1350A) [[File:Control.in_7001_1350A]]
 
* HDGEANT input (1350A) [[File:Control.in_7001_1350A]]
  
== <math>\gamma \, p  \rightarrow p \, X(2000) \rightarrow p \, \eta \, \pi^{+} \, \pi^{-}</math> ==
+
=== <math>\gamma \, p  \rightarrow p \, X(2000) \rightarrow p \, \eta \, \pi^{+} \, \pi^{-}</math> ===
  
 
* Run Number: 7002
 
* Run Number: 7002
Line 51: Line 93:
 
* [http://hadron.physics.fsu.edu/~aristeidis/glueX_05_19_14.pdf phase-space-X(2000)]
 
* [http://hadron.physics.fsu.edu/~aristeidis/glueX_05_19_14.pdf phase-space-X(2000)]
  
== <math>\gamma \, p \rightarrow n \, X^{+}(2000) \rightarrow n \, \pi^{+} \, \pi^{+}\, \pi^{-}</math> ==
+
=== <math>\gamma \, p \rightarrow n \, X^{+}(2000) \rightarrow n \, \pi^{+} \, \pi^{+}\, \pi^{-}</math> ===
  
 
* Run Number: 7003
 
* Run Number: 7003
Line 57: Line 99:
 
* genr8 input [[File:Input.input_7003]]
 
* genr8 input [[File:Input.input_7003]]
  
== <math>\gamma \, p \rightarrow p \, Y(2170) \rightarrow p \, \phi \pi^{+}\, \pi^{-} </math> ==
+
=== <math>\gamma \, p \rightarrow p \, Y(2170) \rightarrow p \, \phi \pi^{+}\, \pi^{-} </math> ===

Revision as of 08:44, 22 May 2014

Overview

This page will serve as a collaborative workspace for groups studying the effects of the reducing the solenoid current. Details of the simulation, as well as results of the analysis can be shared here.


Existing Studies

The effect of a decreased solenoid current on \omega reconstruction has been examined in some detail in [GlueX Doc 1429]. It may be useful to reproduce this study with the latest reconstruction.

Useful Links

Analysis

The following channels were suggested at the May 2014 collaboration meeting (see document). Details of the progress of the analyses can be included below. This can include genr8/HDGEANT input files, JANA plugins used for the analysis, results...

Skim/Analysis Cuts

Skim

  1. Individual Tracking FOM 3 sigma (instead of combined: just seems more intuitive).
  2. Has-detector-match (DCutAction_AllTracksHaveDetectorMatch).
  3. Individual Neutral PID FOM 5-sigma (DCutAction_PIDFOM).
  4. If no missing particle, cut on transverse momentum at 400 MeV/c (DCutAction_TransverseMomentum)

Analysis

  1. Kinematic fit converges (DCutAction_KinFitFOM with cut value of 0.0).

It seemed like the PID cuts on charged particles (e.g. 5-sigma w/o BCAL) were cutting away too much "signal," although some of that signal might have been ghost tracks. Before cutting on it, you'd want to do some studies to see how many combos that contain tracks with low PID confidence actually pass kinematic fit or BDT cuts.

Everything else should probably be left to the BDT.

PYTHIA samples

The data used for the analysis is extracted from PYTHIA generated samples. The run number scheme is the following:

PYTHIA Run Specifications
Run Number Magnetic field map EM background rate Notes
9001 1350A 1.1E7 Standard DC2 production
9002 1350A 5.5E7 Standard DC2 production
9003 1350A none Standard DC2 production
9004 1500A 1.1E7
9005 1500A 5.5E7
9006 1500A none
9007 1200A 1.1E7
9008 1200A 5.5E7
9009 1200A none

genr8 phase space samples

Failed to parse (lexing error): \gamma \, p ≈ \rightarrow p \, X(2000) \, \rightarrow p \, \omega \, \pi^{+} \, \pi^{-}

  • Run Number: 7001

\gamma \,p\rightarrow p\,X(2000)\rightarrow p\,\eta \,\pi ^{{+}}\,\pi ^{{-}}

  • Run Number: 7002

\gamma \,p\rightarrow n\,X^{{+}}(2000)\rightarrow n\,\pi ^{{+}}\,\pi ^{{+}}\,\pi ^{{-}}

  • Run Number: 7003

\gamma \,p\rightarrow p\,Y(2170)\rightarrow p\,\phi \pi ^{{+}}\,\pi ^{{-}}