Difference between revisions of "Mattione Update 11072011"

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== Procedure ==
 
== Procedure ==
* Reconstruct π(1600) -> b1π events with t-slope = 2.0 (was 5.0 for X(2000)) using both the 334 and 1234 segmentations
+
* Reconstruct π(1600) -> b1π events with t-slope = 2.0 using both the 334 and 1234 segmentations
 
* Plot &Delta;&beta; vs p for &pi;<sup>+</sup> candidates to see proton, &pi;<sup>+</sup> separation.
 
* Plot &Delta;&beta; vs p for &pi;<sup>+</sup> candidates to see proton, &pi;<sup>+</sup> separation.
  
== &pi;(1600) -> b1pi Events, &pi;<sup>+</sup> BCAL &Delta;&beta; vs p ==
+
== &pi;(1600) -> b1pi Events ==
 +
 
 +
=== p vs. &theta; ===
 +
 
 +
* p vs. &theta;
 +
{| class="wikitable"
 +
| [[Image:Mattione_Update_11072011_BCALPVsTheta_PiPlus.gif|thumb|left|400px|&pi;<sup>+</sup>'s]]
 +
| [[Image:Mattione_Update_11072011_BCALPVsTheta_Proton.gif|thumb|left|400px|protons]]
 +
|}
 +
 
 +
=== &pi;<sup>+</sup> BCAL &Delta;&beta; vs p ===
 
&Delta;&beta; = &beta;<sub>p</sub> - &beta;<sub>t</sub> = p/sqrt(p*p + m*m) - path/(c*TOF)
 
&Delta;&beta; = &beta;<sub>p</sub> - &beta;<sub>t</sub> = p/sqrt(p*p + m*m) - path/(c*TOF)
  

Revision as of 10:25, 7 November 2011

Procedure

  • Reconstruct π(1600) -> b1π events with t-slope = 2.0 using both the 334 and 1234 segmentations
  • Plot Δβ vs p for π+ candidates to see proton, π+ separation.

π(1600) -> b1pi Events

p vs. θ

  • p vs. θ
π+'s
protons

π+ BCAL Δβ vs p

Δβ = βp - βt = p/sqrt(p*p + m*m) - path/(c*TOF)

334 Segmentation


  • π(1600) -> b1pi Events, π+ Candidates, BCAL Δβ vs p
p = 1.2 GeV/c, 334 Segmentation
p = 1.4 GeV/c, 334 Segmentation
p = 1.5 GeV/c, 334 Segmentation
p = 1.6 GeV/c, 334 Segmentation