Difference between revisions of "Kinematic fitting of ρ and b1π events"
From GlueXWiki
(→ρ events) |
(→b1π events) |
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** Use default PID algorithm | ** Use default PID algorithm | ||
* 1C kinematic fit (missing π0) | * 1C kinematic fit (missing π0) | ||
| − | [[File:b1pi_mm2.gif | left | frame | Missing mass squared for the reaction γp | + | [[File:b1pi_mm2.gif | left | frame | Missing mass squared for the reaction γp→p2π+π-(X). Red histogram is after cutting on CL from kinematic fitting at 0.01.]] |
[[File:b1pi_prob.gif]] | [[File:b1pi_prob.gif]] | ||
[[File:b1pi_omega_mass.gif | left | frame | Black histogram uses momenta from tracking reconstruction; red histogram uses refined momenta returned by kinematic fitting code]] | [[File:b1pi_omega_mass.gif | left | frame | Black histogram uses momenta from tracking reconstruction; red histogram uses refined momenta returned by kinematic fitting code]] | ||
Latest revision as of 10:07, 4 April 2012
ρ events
- Generated 100000 events with genr8
- Require pπ+π-, each with tracking CL>0.001
- Use default PID algorithm
- 4C kinematic fit (nothing missing)
Missing mass squared for the reaction γp→pπ-π+. Red histogram is after a 0.01 CL cut on the result of kinematic fitting
- Pull distributions
π- px pull
π- py pull
π- pz pull
π+ px pull
π+ py pull
π+ pz pull
proton px pull
proton py pull
proton pz pull
In the kinematic fitting code,
Pull = (ν(fit)-ν(meas)) / √(C(meas)-C(fit))
b1π events
- Generated 100000 events with genr8
- Require p2π+2π-, each with tracking CL>0.001
- Use default PID algorithm
- 1C kinematic fit (missing π0)
Missing mass squared for the reaction γp→p2π+π-(X). Red histogram is after cutting on CL from kinematic fitting at 0.01.
Black histogram uses momenta from tracking reconstruction; red histogram uses refined momenta returned by kinematic fitting code
