Difference between revisions of "Mattione Update 11072011"

From GlueXWiki
Jump to: navigation, search
(Created page with "== Procedure == * Reconstruct π(1600) -> b1π events with t-slope = 2.0 (was 5.0 for X(2000)) using both the 334 and 1234 segmentations * Plot Δβ vs p for π<su...")
 
Line 2: Line 2:
 
* Reconstruct &pi;(1600) -> b1&pi; events with t-slope = 2.0 (was 5.0 for X(2000)) using both the 334 and 1234 segmentations
 
* Reconstruct &pi;(1600) -> b1&pi; events with t-slope = 2.0 (was 5.0 for X(2000)) 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 ==
 +
&Delta;&beta; = &beta;<sub>p</sub> - &beta;<sub>t</sub> = p/sqrt(p*p + m*m) - path/(c*TOF)
 +
 +
[[Image:Mattione_Update_10312011_BCALPiPlusDeltaBetaVsP_334Segmentation.gif|thumb|left|600px|334 Segmentation]]
 +
 +
* &pi;(1600) -> b1pi Events, &pi;<sup>+</sup> Candidates, BCAL &Delta;&beta; vs p
 +
{| class="wikitable"
 +
| [[Image:Mattione_Update_10312011_BCALPiPlusDeltaBetaVsP1200MeV_334Segmentation.gif|thumb|left|400px|p = 1.2 GeV/c, 334 Segmentation]]
 +
| [[Image:Mattione_Update_10312011_BCALPiPlusDeltaBetaVsP1400MeV_334Segmentation.gif|thumb|left|400px|p = 1.4 GeV/c, 334 Segmentation]]
 +
|-
 +
| [[Image:Mattione_Update_10312011_BCALPiPlusDeltaBetaVsP1500MeV_334Segmentation.gif|thumb|left|400px|p = 1.5 GeV/c, 334 Segmentation]]
 +
| [[Image:Mattione_Update_10312011_BCALPiPlusDeltaBetaVsP1600MeV_334Segmentation.gif|thumb|left|400px|p = 1.6 GeV/c, 334 Segmentation]]
 +
|}

Revision as of 10:21, 7 November 2011

Procedure

  • Reconstruct π(1600) -> b1π events with t-slope = 2.0 (was 5.0 for X(2000)) using both the 334 and 1234 segmentations
  • Plot Δβ vs p for π+ candidates to see proton, π+ separation.

π(1600) -> b1pi Events, 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