Difference between revisions of "Mattione Update 07092012"
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! (p) | ! (p) | ||
| [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Y2175.png|left|350px]] || [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Y2175_f11285.png|left|350px]] || [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Y2175_Pythia.png|left|350px]] | | [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Y2175.png|left|350px]] || [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Y2175_f11285.png|left|350px]] || [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Y2175_Pythia.png|left|350px]] | ||
| + | |} | ||
| + | <br style="clear:both;"/> | ||
| + | |||
| + | === Final Mass Peaks === | ||
| + | * Final Mass Peaks | ||
| + | ** NOTE: proton peak uses pre-kinfit track momentum, Y(2175) peak uses post-kinfit track momentum | ||
| + | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
| + | !width="50"| Mass Peak | ||
| + | !width="350"| Y(2175) | ||
| + | !width="350"| f<sub>1</sub>(1285) | ||
| + | !width="350"| Pythia | ||
| + | |- | ||
| + | ! p | ||
| + | | [[Image:Mattione_Update_07092012_FinalMass_Proton_Y2175.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Proton_Y2175_f11285.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Proton_Y2175_Pythia.png|left|350px]] | ||
| + | |- | ||
| + | ! Y(2175) | ||
| + | | [[Image:Mattione_Update_07092012_FinalMass_Y2175_Y2175.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Y2175_Y2175_f11285.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Y2175_Y2175_Pythia.png|left|350px]] | ||
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
Revision as of 20:42, 8 July 2012
Contents
Y(2175) Study
Reaction
- γ p → Y(2175), p
- Y(2175) → π+, π-, φ
- φ → K+, K-
- Y(2175) → π+, π-, φ
- Final State: p, π+, π-, K+, K-
- ~530,000 Events Generated using genr8 with: 9 GeV Photons, ΓY(2175) = 61 MeV/c2, t-slope = 5.0, 50.0 < Vertex-Z (cm) < 80.0
Background Channel
- γ p → f1(1285), p
- f1(1285) → π+, π-, π+, π-
- NOTE: had to trick genr8 by having the f1(1285) decay to η, η, and then each decaying to π+, π-
- Final State: p, π+, π-, π+, π-
- ~530,000 Events Generated using genr8 with: 9 GeV Photons, Γf1(1285) = 24 MeV/c2, t-slope = 5.0, 50.0 < Vertex-Z (cm) < 80.0
Pythia
- Generated entire photon energy region
Thrown Track Parameters
- Thrown Track Parameters
| Track | Y(2175) | f1(1285) | Pythia |
|---|---|---|---|
| γ |  | ||
| K+ |  | ||
| K- |  | ||
| π+ |  |
 | |
| π- |  |
 | |
| p |  |
 |
Initial Mass Peaks
- Initial Mass Peaks
| Mass Peak | Y(2175) | f1(1285) | Pythia |
|---|---|---|---|
| φ |  |
 |
 |
| p |  |
 |
 |
| Y(2175) |  |
 |
 |
Kinematic Fitting
- Confidence Level
| Fit Constraint | Y(2175) | f1(1285) | Pythia |
|---|---|---|---|
| (p) |  |
 |
 |
Final Mass Peaks
- Final Mass Peaks
- NOTE: proton peak uses pre-kinfit track momentum, Y(2175) peak uses post-kinfit track momentum
| Mass Peak | Y(2175) | f1(1285) | Pythia |
|---|---|---|---|
| p |  |
 |
 |
| Y(2175) |  |
 |
 |
