Difference between revisions of "Mattione Update 07092012"
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** e.g. If a q = + track has PID FOM > 1% for both the π<sup>+</sup> & K<sup>+</sup>: allow both combinations (DO NOT take the best FOM as true!) | ** e.g. If a q = + track has PID FOM > 1% for both the π<sup>+</sup> & K<sup>+</sup>: allow both combinations (DO NOT take the best FOM as true!) | ||
* The analysis (cuts/histing/kinfits) is then performed on each possible track combination (events are only cut if every one of their track combinations is cut): | * The analysis (cuts/histing/kinfits) is then performed on each possible track combination (events are only cut if every one of their track combinations is cut): | ||
− | ** Required reconstruction of 2 | + | ** Required reconstruction of >= 2 q+ Tracks, >= 2 q- Tracks (proton is treated as missing) |
** Required 45.0 < Track-Vertex-Z (cm) < 85.0 | ** Required 45.0 < Track-Vertex-Z (cm) < 85.0 | ||
− | |||
** Require the combined FOM for PID (π<sup>+</sup>, π<sup>-</sup>, K<sup>+</sup>, K<sup>-</sup>) be > 1% | ** Require the combined FOM for PID (π<sup>+</sup>, π<sup>-</sup>, K<sup>+</sup>, K<sup>-</sup>) be > 1% | ||
− | ** Place very loose cuts on the φ invariant mass (0.8 - 1.3) and p missing mass (0. | + | ** Place very loose cuts on the φ invariant mass (0.8 - 1.3) and p missing mass (0.3 - 1.6): reduces # of bogus track combinations to save time / cleanup histograms |
** Phi mass cut: 1.004 < K<sup>+</sup>K<sup>-</sup> Invariant Mass (GeV/c<sup>2</sup>) < 1.04 | ** Phi mass cut: 1.004 < K<sup>+</sup>K<sup>-</sup> Invariant Mass (GeV/c<sup>2</sup>) < 1.04 | ||
** Kinematic Fit: 4-momentum conservation: p missing mass | ** Kinematic Fit: 4-momentum conservation: p missing mass | ||
Line 32: | Line 31: | ||
== Y(2175) Study Analysis == | == Y(2175) Study Analysis == | ||
* First Analysis Step: | * First Analysis Step: | ||
− | ** Require reconstruction of 2 | + | ** Require reconstruction of >= 2 q+ Tracks, >= 2 q- Tracks (proton is treated as missing) |
=== Thrown Track Parameters === | === Thrown Track Parameters === | ||
* Thrown Track Parameters | * Thrown Track Parameters | ||
+ | ** NOTE: Counts in bggen Photon plot are not self consistent with other bggen plot counts (had to cobble it together). | ||
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
!width="50"| Track | !width="50"| Track | ||
Line 65: | Line 65: | ||
* Next Analysis Steps: | * Next Analysis Steps: | ||
** Required 45.0 < Track-Vertex-Z (cm) < 85.0 | ** Required 45.0 < Track-Vertex-Z (cm) < 85.0 | ||
− | |||
** Require the combined FOM for PID (π<sup>+</sup>, π<sup>-</sup>, K<sup>+</sup>, K<sup>-</sup>) be > 1% | ** Require the combined FOM for PID (π<sup>+</sup>, π<sup>-</sup>, K<sup>+</sup>, K<sup>-</sup>) be > 1% | ||
Line 89: | Line 88: | ||
=== Kinematic Fitting === | === Kinematic Fitting === | ||
* Next Analysis Steps: | * Next Analysis Steps: | ||
− | ** Place very loose cuts on the φ invariant mass (0.8 - 1.3) and p missing mass (0. | + | ** Place very loose cuts on the φ invariant mass (0.8 - 1.3) and p missing mass (0.3 - 1.6): reduces # of bogus track combinations to save time / cleanup histograms |
** Phi mass cut: 1.004 < K<sup>+</sup>K<sup>-</sup> Invariant Mass (GeV/c<sup>2</sup>) < 1.04 | ** Phi mass cut: 1.004 < K<sup>+</sup>K<sup>-</sup> Invariant Mass (GeV/c<sup>2</sup>) < 1.04 | ||
** Kinematic Fit: 4-momentum conservation: p missing mass | ** Kinematic Fit: 4-momentum conservation: p missing mass | ||
Line 179: | Line 178: | ||
== φ<sub>3</sub>(1850) Study Analysis == | == φ<sub>3</sub>(1850) Study Analysis == | ||
* First Analysis Step: | * First Analysis Step: | ||
− | ** Require reconstruction of | + | ** Require reconstruction of 1-to-2 q+ Tracks, 1 q- Track (proton is treated as missing) |
=== Thrown Track Parameters === | === Thrown Track Parameters === | ||
* Thrown Track Parameters | * Thrown Track Parameters | ||
+ | ** NOTE: Histogram counts within the f<sub>0</sub>(980) and bggen sections are not self-consistent (had to cobble together plots). | ||
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
!width="50"| Track | !width="50"| Track | ||
− | !width="350"| | + | !width="350"| φ<sub>3</sub>(1850) |
− | !width="350"| f<sub> | + | !width="350"| f<sub>0</sub>(980) |
!width="350"| bggen | !width="350"| bggen | ||
|- | |- | ||
! γ | ! γ | ||
− | | Spike at E = 9.0 GeV || Spike at E = 9.0 GeV || [[Image: | + | | Spike at E = 9.0 GeV || Spike at E = 9.0 GeV || [[Image:Mattione_Update_07092012_ThrownP_Photon_Phi31850_Pythia.png|left|350px]] |
|- | |- | ||
! K<sup>+</sup> | ! K<sup>+</sup> | ||
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_ThrownPVsTheta_KPlus_Phi31850.png|left|350px]] || NA || [[Image:Mattione_Update_07092012_ThrownPVsTheta_KPlus_Phi31850_Pythia.png|left|350px]] |
|- | |- | ||
! K<sup>-</sup> | ! K<sup>-</sup> | ||
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_ThrownPVsTheta_KMinus_Phi31850.png|left|350px]] || NA || [[Image:Mattione_Update_07092012_ThrownPVsTheta_KMinus_Phi31850_Pythia.png|left|350px]] |
|- | |- | ||
! π<sup>+</sup> | ! π<sup>+</sup> | ||
− | | | + | | NA || [[Image:Mattione_Update_07092012_ThrownPVsTheta_PiPlus_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_ThrownPVsTheta_PiPlus_Phi31850_Pythia.png|left|350px]] |
|- | |- | ||
! π<sup>-</sup> | ! π<sup>-</sup> | ||
− | | | + | | NA || [[Image:Mattione_Update_07092012_ThrownPVsTheta_PiMinus_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_ThrownPVsTheta_PiMinus_Phi31850_Pythia.png|left|350px]] |
|- | |- | ||
! p | ! p | ||
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_ThrownPVsTheta_Proton_Phi31850.png|left|350px]] || [[Image:Mattione_Update_07092012_ThrownPVsTheta_Proton_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_ThrownPVsTheta_Proton_Phi31850_Pythia.png|left|350px]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
Line 213: | Line 213: | ||
** Required 45.0 < Track-Vertex-Z (cm) < 85.0 | ** Required 45.0 < Track-Vertex-Z (cm) < 85.0 | ||
** Required DOCA between tracks < 5.0 cm | ** Required DOCA between tracks < 5.0 cm | ||
− | ** Require the combined FOM for PID ( | + | ** Require the combined FOM for PID (K<sup>+</sup>, K<sup>-</sup>) be > 1% |
* Initial Mass Peaks | * Initial Mass Peaks | ||
Line 219: | Line 219: | ||
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
!width="50"| Mass Peak | !width="50"| Mass Peak | ||
− | !width="350"| | + | !width="350"| φ<sub>3</sub>(1850) |
− | !width="350"| f<sub> | + | !width="350"| f<sub>0</sub>(980) |
!width="350"| bggen | !width="350"| bggen | ||
− | |||
− | |||
− | |||
|- | |- | ||
! p | ! p | ||
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_Mass_Proton_Phi31850.png|left|350px]] || [[Image:Mattione_Update_07092012_Mass_Proton_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_Mass_Proton_Phi31850_Pythia.png|left|350px]] |
|- | |- | ||
− | ! | + | ! φ<sub>3</sub>(1850) |
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_Mass_Phi31850_Phi31850.png|left|350px]] || [[Image:Mattione_Update_07092012_Mass_Phi31850_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_Mass_Phi31850_Phi31850_Pythia.png|left|350px]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
Line 236: | Line 233: | ||
=== Kinematic Fitting === | === Kinematic Fitting === | ||
* Next Analysis Steps: | * Next Analysis Steps: | ||
− | ** Place very loose | + | ** Place very loose cut on the p missing mass (0.3 - 1.6): reduces # of bogus track combinations to save time / cleanup histograms |
− | + | ||
** Kinematic Fit: 4-momentum conservation: p missing mass | ** Kinematic Fit: 4-momentum conservation: p missing mass | ||
* Confidence Level | * Confidence Level | ||
− | ** NOTE: The pulls had sigmas of ~1. | + | ** NOTE: The pulls had sigmas of ~1.14 for φ<sub>3</sub>(1850), ~0.94 for f<sub>0</sub>(980), and p_z means of +/- 0.2 (bggen pulls were OK). This is possibly due to my having an incorrect variance for the photon energy, and combinatoric background. |
** NOTE: the spike at zero for these distributions is way above the top of the plots. | ** NOTE: the spike at zero for these distributions is way above the top of the plots. | ||
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
!width="50"| Fit Constraint | !width="50"| Fit Constraint | ||
− | !width="350"| | + | !width="350"| φ<sub>3</sub>(1850) |
− | !width="350"| f<sub> | + | !width="350"| f<sub>0</sub>(980) |
!width="350"| bggen | !width="350"| bggen | ||
|- | |- | ||
! (p) | ! (p) | ||
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Phi31850.png|left|350px]] || [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_KinFit_ConfidenceLevel_Phi31850_Pythia.png|left|350px]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
Line 259: | Line 255: | ||
* Final Mass Peaks | * Final Mass Peaks | ||
− | ** NOTE: proton peak uses pre-kinfit track momentum, | + | ** NOTE: proton peak uses pre-kinfit track momentum, φ<sub>3</sub>(1850) peak uses post-kinfit track momentum |
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
!width="50"| Mass Peak | !width="50"| Mass Peak | ||
− | !width="350"| | + | !width="350"| φ<sub>3</sub>(1850) |
− | !width="350"| f<sub> | + | !width="350"| f<sub>0</sub>(980) |
!width="350"| bggen | !width="350"| bggen | ||
|- | |- | ||
! p | ! p | ||
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_FinalMass_Proton_Phi31850.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Proton_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Proton_Phi31850_Pythia.png|left|350px]] |
|- | |- | ||
− | ! | + | ! φ<sub>3</sub>(1850) |
− | | [[Image: | + | | [[Image:Mattione_Update_07092012_FinalMass_Phi31850_Phi31850.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Phi31850_Phi31850_f0980.png|left|350px]] || [[Image:Mattione_Update_07092012_FinalMass_Phi31850_Phi31850_Pythia.png|left|350px]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
Line 282: | Line 278: | ||
!width="200"| % Events Survive Cuts | !width="200"| % Events Survive Cuts | ||
!width="200"| # Surviving Track Combos / Surviving Event | !width="200"| # Surviving Track Combos / Surviving Event | ||
− | !width="200"| % Surviving Track Combos within +/- 2Γ (84.4%) of | + | !width="200"| % Surviving Track Combos within +/- 2Γ (84.4%) of φ<sub>3</sub>(1850) mass peak |
− | !width="200"| Rough % Generated Events within +/- 2Γ (84.4%) of | + | !width="200"| Rough % Generated Events within +/- 2Γ (84.4%) of φ<sub>3</sub>(1850) mass peak |
|- | |- | ||
− | ! | + | ! φ<sub>3</sub>(1850) |
− | | | + | | 992409 || 11.5% || 1.04 || 75.4% || 8.7% |
|- | |- | ||
− | ! f<sub> | + | ! f<sub>0</sub>(980) |
− | | | + | | 513254 || 25.2% || 1.02 || 9.5% || 2.4% |
|- | |- | ||
! bggen | ! bggen | ||
− | | | + | | 1165735 || 0.56% || 1.02 || 9.1% || 0.051% |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
+ | |||
+ | == Upcoming Kaon Channels == | ||
+ | === γ p → η'(2300), p === | ||
+ | * η'(2300) → K*(892)<sup>0</sup>, K<sup>0</sup>_bar: 50% | ||
+ | ** K*(892)<sup>0</sup> → K<sup>+</sup>, π<sup>-</sup>: 66.5% | ||
+ | *** K<sup>0</sup>_bar → π<sup>+</sup>, π<sup>-</sup>: 69.2% | ||
+ | * Branching Fraction: 23.0% | ||
+ | * Final State: p, K<sup>+</sup>, π<sup>-</sup>, π<sup>+</sup>, π<sup>-</sup> | ||
+ | |||
+ | ==== Proposal Had: ==== | ||
+ | * η'(2300) → K*(892)<sup>+</sup>, K<sup>-</sup>: 50% | ||
+ | ** K*(892)<sup>+</sup> → K<sup>+</sup>, π<sup>0</sup>: 33.3% | ||
+ | *** π<sup>0</sup> → γ, γ: 98.8% | ||
+ | * Branching Fraction: 16.5% | ||
+ | * Final State: p, K<sup>-</sup>, K<sup>+</sup>, γ, γ | ||
+ | |||
+ | === γ p → h'<sub>2</sub>(2600), p === | ||
+ | * h'<sub>2</sub>(2600) → K<sub>1</sub>(1400)<sup>+</sup>, K<sup>-</sup>: 50% | ||
+ | ** K<sub>1</sub>(1400)<sup>+</sup> → K*(892)<sup>0</sup>, π<sup>+</sup>: 63% | ||
+ | *** K*(892)<sup>0</sup> → K<sup>+</sup>, π<sup>-</sup>: 66.5% | ||
+ | * Branching Fraction: 21% | ||
+ | * Final State: p, K<sup>-</sup>, π<sup>+</sup>, K<sup>+</sup>, π<sup>-</sup> |
Latest revision as of 13:27, 9 July 2012
Contents
Y(2175) Study Overview
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-
- 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-
- Events generated using genr8 with: 9 GeV Photons, Γf1(1285) = 24 MeV/c2, t-slope = 5.0, 50.0 < Vertex-Z (cm) < 80.0
bggen
- Generated entire photon energy region
Analysis Overview
- For each q = +/- particle in the reaction, all detected q = +/- tracks are tested as to whether or not they are that particle
- e.g. If a q = + track has PID FOM > 1% for both the π+ & K+: allow both combinations (DO NOT take the best FOM as true!)
- The analysis (cuts/histing/kinfits) is then performed on each possible track combination (events are only cut if every one of their track combinations is cut):
- Required reconstruction of >= 2 q+ Tracks, >= 2 q- Tracks (proton is treated as missing)
- Required 45.0 < Track-Vertex-Z (cm) < 85.0
- Require the combined FOM for PID (π+, π-, K+, K-) be > 1%
- Place very loose cuts on the φ invariant mass (0.8 - 1.3) and p missing mass (0.3 - 1.6): reduces # of bogus track combinations to save time / cleanup histograms
- Phi mass cut: 1.004 < K+K- Invariant Mass (GeV/c2) < 1.04
- Kinematic Fit: 4-momentum conservation: p missing mass
- Require that the confidence level from the kinematic fit be > 1%
Y(2175) Study Analysis
- First Analysis Step:
- Require reconstruction of >= 2 q+ Tracks, >= 2 q- Tracks (proton is treated as missing)
Thrown Track Parameters
- Thrown Track Parameters
- NOTE: Counts in bggen Photon plot are not self consistent with other bggen plot counts (had to cobble it together).
Track | Y(2175) | f1(1285) | bggen |
---|---|---|---|
γ | Spike at E = 9.0 GeV | Spike at E = 9.0 GeV | |
K+ | NA | ||
K- | NA | ||
π+ | |||
π- | |||
p |
Initial Mass Peaks
- Next Analysis Steps:
- Required 45.0 < Track-Vertex-Z (cm) < 85.0
- Require the combined FOM for PID (π+, π-, K+, K-) be > 1%
- Initial Mass Peaks
- Note: The peak in the f1(1285) φ-mass plot is due to my forcing the f1(1285) to decay to ηη, with each η decaying to π+π-.
Mass Peak | Y(2175) | f1(1285) | bggen |
---|---|---|---|
φ | |||
p | |||
Y(2175) |
Kinematic Fitting
- Next Analysis Steps:
- Place very loose cuts on the φ invariant mass (0.8 - 1.3) and p missing mass (0.3 - 1.6): reduces # of bogus track combinations to save time / cleanup histograms
- Phi mass cut: 1.004 < K+K- Invariant Mass (GeV/c2) < 1.04
- Kinematic Fit: 4-momentum conservation: p missing mass
- Confidence Level
- NOTE: The pulls had sigmas of ~1.5 - 1.6, and the p_z means were +/- 0.2 (other means were 0). This is possibly due to my having an incorrect variance for the photon energy, and combinatoric background seeping into the distributions.
- NOTE: the spike at zero for these distributions is way above the top of the plots.
Fit Constraint | Y(2175) | f1(1285) | bggen |
---|---|---|---|
(p) |
Final Mass Peaks
- Final Analysis Step:
- Require that the confidence level from the kinematic fit be > 1%
- 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) | bggen |
---|---|---|---|
p | |||
Y(2175) |
Y(2175) Study Statistics
- % of events & track combinations that survive cuts and are near the signal peak.
- NOTE: Final column is "rough" because I assumed that the track combination / event ratio is mass-independent (I just multiplied columns 2 & 4)
Reaction | # Generated Events | % Events Survive Cuts | # Surviving Track Combos / Surviving Event | % Surviving Track Combos within +/- 2Γ (84.4%) of Y(2175) mass peak | Rough % Generated Events within +/- 2Γ (84.4%) of Y(2175) mass peak |
---|---|---|---|---|---|
Y(2175) | 323196 | 7.4% | 1.17 | 73.8% | 5.5% |
f1(1285) | 503125 | 1.6% | 1.13 | 40.4% | 0.65% |
bggen | 1047972 | 0.044% | 1.31 | 27.8% | 0.012% |
φ3(1850) Study Overview
Reaction
- γ p → φ3(1850), p
- φ3(1850) → K+, K-
- Final State: p, K+, K-
- Events generated using genr8 with: 9 GeV Photons, Γφ3(1850) = 87 MeV/c2, t-slope = 5.0, 50.0 < Vertex-Z (cm) < 80.0
Background Channel
- γ p → f0(980), p
- f0(980) → π+, π-
- Final State: p, π+, π-
- Events generated using genr8 with: 9 GeV Photons, Γf0(980) = 50 MeV/c2, t-slope = 5.0, 50.0 < Vertex-Z (cm) < 80.0
bggen
- Generated entire photon energy region
Analysis Overview
- For each q = +/- particle in the reaction, all detected q = +/- tracks are tested as to whether or not they are that particle
- e.g. If a q = + track has PID FOM > 1% for both the π+ & K+: allow both combinations (DO NOT take the best FOM as true!)
- The analysis (cuts/histing/kinfits) is then performed on each possible track combination (events are only cut if every one of their track combinations is cut):
- Required reconstruction of 1-to-2 q+ Tracks, 1 q- Track (proton is treated as missing)
- Required 45.0 < Track-Vertex-Z (cm) < 85.0
- Required DOCA between tracks < 5.0 cm
- Require the combined FOM for PID (K+, K-) be > 1%
- Place very loose cuts on the p missing mass (0.3 - 1.6): reduces # of bogus track combinations to save time / cleanup histograms
- Kinematic Fit: 4-momentum conservation: p missing mass
- Require that the confidence level from the kinematic fit be > 1%
φ3(1850) Study Analysis
- First Analysis Step:
- Require reconstruction of 1-to-2 q+ Tracks, 1 q- Track (proton is treated as missing)
Thrown Track Parameters
- Thrown Track Parameters
- NOTE: Histogram counts within the f0(980) and bggen sections are not self-consistent (had to cobble together plots).
Track | φ3(1850) | f0(980) | bggen |
---|---|---|---|
γ | Spike at E = 9.0 GeV | Spike at E = 9.0 GeV | |
K+ | NA | ||
K- | NA | ||
π+ | NA | ||
π- | NA | ||
p |
Initial Mass Peaks
- Next Analysis Steps:
- Required 45.0 < Track-Vertex-Z (cm) < 85.0
- Required DOCA between tracks < 5.0 cm
- Require the combined FOM for PID (K+, K-) be > 1%
- Initial Mass Peaks
- Note: The peak in the f1(1285) φ-mass plot is due to my forcing the f1(1285) to decay to ηη, with each η decaying to π+π-.
Mass Peak | φ3(1850) | f0(980) | bggen |
---|---|---|---|
p | |||
φ3(1850) |
Kinematic Fitting
- Next Analysis Steps:
- Place very loose cut on the p missing mass (0.3 - 1.6): reduces # of bogus track combinations to save time / cleanup histograms
- Kinematic Fit: 4-momentum conservation: p missing mass
- Confidence Level
- NOTE: The pulls had sigmas of ~1.14 for φ3(1850), ~0.94 for f0(980), and p_z means of +/- 0.2 (bggen pulls were OK). This is possibly due to my having an incorrect variance for the photon energy, and combinatoric background.
- NOTE: the spike at zero for these distributions is way above the top of the plots.
Fit Constraint | φ3(1850) | f0(980) | bggen |
---|---|---|---|
(p) |
Final Mass Peaks
- Final Analysis Step:
- Require that the confidence level from the kinematic fit be > 1%
- Final Mass Peaks
- NOTE: proton peak uses pre-kinfit track momentum, φ3(1850) peak uses post-kinfit track momentum
Mass Peak | φ3(1850) | f0(980) | bggen |
---|---|---|---|
p | |||
φ3(1850) |
φ3(1850) Study Statistics
- % of events & track combinations that survive cuts and are near the signal peak.
- NOTE: Final column is "rough" because I assumed that the track combination / event ratio is mass-independent (I just multiplied columns 2 & 4)
Reaction | # Generated Events | % Events Survive Cuts | # Surviving Track Combos / Surviving Event | % Surviving Track Combos within +/- 2Γ (84.4%) of φ3(1850) mass peak | Rough % Generated Events within +/- 2Γ (84.4%) of φ3(1850) mass peak |
---|---|---|---|---|---|
φ3(1850) | 992409 | 11.5% | 1.04 | 75.4% | 8.7% |
f0(980) | 513254 | 25.2% | 1.02 | 9.5% | 2.4% |
bggen | 1165735 | 0.56% | 1.02 | 9.1% | 0.051% |
Upcoming Kaon Channels
γ p → η'(2300), p
- η'(2300) → K*(892)0, K0_bar: 50%
- K*(892)0 → K+, π-: 66.5%
- K0_bar → π+, π-: 69.2%
- K*(892)0 → K+, π-: 66.5%
- Branching Fraction: 23.0%
- Final State: p, K+, π-, π+, π-
Proposal Had:
- η'(2300) → K*(892)+, K-: 50%
- K*(892)+ → K+, π0: 33.3%
- π0 → γ, γ: 98.8%
- K*(892)+ → K+, π0: 33.3%
- Branching Fraction: 16.5%
- Final State: p, K-, K+, γ, γ
γ p → h'2(2600), p
- h'2(2600) → K1(1400)+, K-: 50%
- K1(1400)+ → K*(892)0, π+: 63%
- K*(892)0 → K+, π-: 66.5%
- K1(1400)+ → K*(892)0, π+: 63%
- Branching Fraction: 21%
- Final State: p, K-, π+, K+, π-