Difference between revisions of "Mattione Update 06202011"

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(Invariant Masses)
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* Pi0 invariant mass:
 
* Pi0 invariant mass:
 
[[Image:Mattione_Update_06012011_InvMass_Pi0.gif|thumb|left|400px|pi0 06/01]]
 
[[Image:Mattione_Update_06012011_InvMass_Pi0.gif|thumb|left|400px|pi0 06/01]]
[[Image:Mattione_Study_b1pi_InvMass_PiZero.gif|thumb|left|400px|pi0 Current]]
+
[[Image:Mattione_Update_06202011_InvMass_Pi0.gif|thumb|left|400px|pi0 Current]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
 
* X(2000) invariant mass:
 
* X(2000) invariant mass:
 
[[Image:Mattione_Update_06012011_InvMass_X2000.gif|thumb|left|400px|X(2000) 06/01]]
 
[[Image:Mattione_Update_06012011_InvMass_X2000.gif|thumb|left|400px|X(2000) 06/01]]
[[Image:Mattione_Study_b1pi_InvMass_X2000.gif|thumb|left|400px|X(2000) Current]]
+
[[Image:Mattione_Update_06202011_InvMass_X2000.gif|thumb|left|400px|X(2000) Current]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>

Revision as of 11:17, 20 June 2011

b1pi Overview

  • Generated 10000 X(2000) -> b1π-; events following the instructions here.
  • Decay chain:
 gamma p -> p X(2000)0
               |
               |-> b1(1235)+ π-
                    |
                    |-> ω π+
                          |
                          |-> ρ0 π0
                               |   |-> γ γ
                               |
                               |-> π+ π-

Invariant Masses

  • High mass tails due to incorrect photon reconstruction have been removed. These tails were due to photons in the FCAL being reconstructed with vertex-z = 0, such that they had bogus momentum vectors. This was fixed when Miha Kornicer recently updated the photon reconstruction code.
  • Pi0 invariant mass:
pi0 06/01
pi0 Current


  • X(2000) invariant mass:
X(2000) 06/01
X(2000) Current