Difference between revisions of "Mattione Study b1pi"
From GlueXWiki
(→Invariant Masses) |
|||
Line 17: | Line 17: | ||
* Pi0: Filled for all events with > 1 photon, filled for all possible photon combinations (so if three photons in an event, will fill 3 times). | * Pi0: Filled for all events with > 1 photon, filled for all possible photon combinations (so if three photons in an event, will fill 3 times). | ||
[[Image:Mattione_Study_b1pi_InvMass_PiZero.gif|thumb|left|600px]] | [[Image:Mattione_Study_b1pi_InvMass_PiZero.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
* Rho0: Filled for all events with at least one pi+ and at least one pi-, filled for all possible pion combinations (so if two pi+'s and two pi-'s in an event, will fill 4 times). | * Rho0: Filled for all events with at least one pi+ and at least one pi-, filled for all possible pion combinations (so if two pi+'s and two pi-'s in an event, will fill 4 times). | ||
[[Image:Mattione_Study_b1pi_InvMass_RhoZero.gif|thumb|left|600px]] | [[Image:Mattione_Study_b1pi_InvMass_RhoZero.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
* Omega: Filled for all events with at least: one pi+, one pi-, and two photons. Filled for all possible rho combinations, but for events with multiple pi0 candidates the pi0 with the closest mass is chosen (got lazy). | * Omega: Filled for all events with at least: one pi+, one pi-, and two photons. Filled for all possible rho combinations, but for events with multiple pi0 candidates the pi0 with the closest mass is chosen (got lazy). | ||
[[Image:Mattione_Study_b1pi_InvMass_Omega.gif|thumb|left|600px]] | [[Image:Mattione_Study_b1pi_InvMass_Omega.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
* B1+: Filled for all events with at least: two pi+, one pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ formed the Rho0). | * B1+: Filled for all events with at least: two pi+, one pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ formed the Rho0). | ||
[[Image:Mattione_Study_b1pi_InvMass_B1Plus.gif|thumb|left|600px]] | [[Image:Mattione_Study_b1pi_InvMass_B1Plus.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
* X(2000)0: Filled for all events with at least: two pi+, two pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ & pi- formed the Rho0). | * X(2000)0: Filled for all events with at least: two pi+, two pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ & pi- formed the Rho0). |
Revision as of 10:55, 23 May 2011
- Generated 100000 X(2000) -> b1pi events following the instructions here.
- Decay chain:
gamma p -> p X(2000)0 | |-> b1(1235)+ pi- | |-> omega pi+ | |-> rho0 pi0 | |-> gamma gamma | |-> pi+ pi-
Invariant Masses
- Pi0: Filled for all events with > 1 photon, filled for all possible photon combinations (so if three photons in an event, will fill 3 times).
- Rho0: Filled for all events with at least one pi+ and at least one pi-, filled for all possible pion combinations (so if two pi+'s and two pi-'s in an event, will fill 4 times).
- Omega: Filled for all events with at least: one pi+, one pi-, and two photons. Filled for all possible rho combinations, but for events with multiple pi0 candidates the pi0 with the closest mass is chosen (got lazy).
- B1+: Filled for all events with at least: two pi+, one pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ formed the Rho0).
- X(2000)0: Filled for all events with at least: two pi+, two pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ & pi- formed the Rho0).
- Event Count:
- Comparison of Generated and Reconstructed Tracks