Mattione Update 04212014

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Revision as of 01:51, 21 April 2014 by Pmatt (Talk | contribs) (n3pi Cut Study)

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Skim Standard Cuts

  • These cuts are preliminary and subject to change.
  • Combined tracking confidence level (FOM) must be >= 5.73303 × 10-7 (+/- 5σ)
  • Combined PID confidence level (FOM) must be >= 5.73303 × 10-7 (+/- 5σ)
  • VERY loose cuts around invariant/missing mass peaks (keep enough data around peak to do sideband subtraction)

Proposed Exclusive Skims

  • Note: "MM" is short for missing mass, "MMS" for missing mass squared, and "IM" for invariant mass

Non-Strange Meson Channels

Channel Topology Mass Peak Cuts Tag  % of Events # of Events
ππ γp→π+π-p -0.1 < MMS < 0.1
ππ γp→π+π0(n)
π0→γγ
0.01 < MMS < 3.24
0.1 < π0 IM < 0.17
ππ γp→π0π0p
π0→γγ (Both)
-0.1 < MMS < 0.1
0.1 < π0 IM < 0.17 (Both)
γp→π+π-π+(n) 0.01 < MMS < 3.24
γp→π+π-π0(p)
π0→γγ
0.01 < MMS < 3.24
0.1 < π0 IM < 0.17
γp→π+π-π+π-(p) 0.01 < MMS < 3.24
γp→π+π-π+π0(n)
π0→γγ
0.01 < MMS < 3.24
0.1 < π0 IM < 0.17
γp→π+π-π+π-π0(p)
π0→γγ
0.01 < MMS < 3.24
0.1 < π0 IM < 0.17
γp→π+π-π+π-π+(n) 0.01 < MMS < 3.24
ω γp→ωp
ω→π+π-π0
π0→γγ
-0.1 < MMS < 0.1
0.5 < ω IM < 1.0
0.1 < π0 IM < 0.17
ωπ γp→ωπ+(n)
ω→π+π-π0
π0→γγ
0.01 < MMS < 3.24
0.5 < ω IM < 1.0
0.1 < π0 IM < 0.17
ωπ γp→ωπ0(p)
ω→π+π-π0
π0→γγ (Both)
0.01 < MMS < 3.24
0.5 < ω IM < 1.0
0.1 < π0 IM < 0.17 (Both)
ωππ γp→ωπ+π-(p)
ω→π+π-π0
π0→γγ
0.01 < MMS < 3.24
0.5 < ω IM < 1.0
0.1 < π0 IM < 0.17
η γp→ηp
η→γγ
-0.1 < MMS < 0.1
0.3 < η IM < 0.8
ηπ γp→ηπ0(p)
η→γγ
π0→γγ
0.01 < MMS < 3.24
0.3 < η IM < 0.8
0.1 < π0 IM < 0.17
ηπ γp→ηπ+(n)
η→γγ
0.01 < MMS < 3.24
0.3 < η IM < 0.8
ηππ γp→ηπ+π-(p)
η→γγ
0.01 < MMS < 3.24
0.3 < η IM < 0.8
ηππ γp→ηπ+π0(n)
η→γγ
π0→γγ
0.01 < MMS < 3.24
0.3 < η IM < 0.8
0.1 < π0 IM < 0.17
η3π γp→ηπ+π-π+(n)
η→γγ
0.01 < MMS < 3.24
0.3 < η IM < 0.8
η3π γp→ηπ+π-π0(p)
η→γγ
π0→γγ
0.01 < MMS < 3.24
0.3 < η IM < 0.8
0.1 < π0 IM < 0.17
η4π γp→ηπ+π-π+π-(p)
η→γγ
0.01 < MMS < 3.24
0.3 < η IM < 0.8
ηηππ γp→ηηπ+π-(p)
η→γγ (Both)
0.01 < MMS < 3.24
0.3 < η IM < 0.8 (Both)
η' γp→η'p
η'→π+π-η
η→γγ
-0.1 < MMS < 0.1
0.7 < η' IM < 1.2
0.3 < η IM < 0.8
η'π γp→η'π0(p)
η'→π+π-η
η→γγ
π0→γγ
0.01 < MMS < 3.24
0.7 < η' IM < 1.2
0.3 < η IM < 0.8
0.1 < π0 IM < 0.17
η'π γp→η'π+(n)
η'→π+π-η
η→γγ
0.01 < MMS < 3.24
0.7 < η' IM < 1.2
0.3 < η IM < 0.8


Strange Meson Channels

Channel Topology Mass Peak Cuts Tag  % of Events # of Events
KK γp→K+K-p -0.1 < MMS < 0.1
KK γp→K+KS0(n)
KS0→π+π-
0.01 < MMS < 3.24
0.3 < KS0 IM < 0.7
φ γp→φp
φ→K+K-
-0.1 < MMS < 0.1
φ IM < 1.2
KKπ γp→K+K-π0(p)
π0→γγ
0.01 < MMS < 3.24
0.1 < π0 IM < 0.17
KKπ γp→K+KS0π-(p)
KS0→π+π-
0.01 < MMS < 3.24
0.3 < KS0 IM < 0.7
KKπ γp→K-KS0π+(p)
KS0→π+π-
0.01 < MMS < 3.24
0.3 < KS0 IM < 0.7
KKπ γp→K+K-π+(n) 0.01 < MMS < 3.24
KKππ γp→K+K-π+π-(p) 0.01 < MMS < 3.24
KKππ γp→K+K-π+π0(n)
π0→γγ
0.01 < MMS < 3.24
0.1 < π0 IM < 0.17
KKω γp→K+K-ω(p)
ω→π+π-π0
π0→γγ
0.01 < MMS < 3.24
0.5 < ω IM < 1.0
0.1 < π0 IM < 0.17
KKω γp→K+KS0ω(n)
KS0→π+π-
ω→π+π-π0
π0→γγ
0.01 < MMS < 3.24
0.3 < KS0 IM < 0.7
0.5 < ω IM < 1.0
0.1 < π0 IM < 0.17


Hyperon Channels

Channel Topology Mass Peak Cuts Tag  % of Events # of Events
γp→K+Λ
Λ→pπ-
-0.1 < MMS < 0.1
Λ IM < 1.2
KKΞ γp→K+K+Ξ-
Ξ-→Λπ-
Λ→pπ-
-0.1 < MMS < 0.1
Ξ- IM < 1.55
Λ IM < 1.2


Proposed Inclusive Skims

  • Note: "MM" is short for missing mass, "MMS" for missing mass squared, and "IM" for invariant mass
Channel Topology Mass Peak Cuts Tag  % of Events # of Events
η(X) γp→ηX
η→γγ
0.3 < η IM < 0.8
ω(X) γp→ωX
ω→π+π-π0
π0→γγ
0.5 < ω IM < 1.0
0.1 < π0 IM < 0.17
η'(X) γp→η'X
η'→π+π-η
η→γγ
0.7 < η' IM < 1.2
0.3 < η IM < 0.8
φ(X) γp→φX
φ→K+K-
φ IM < 1.2
Λ(X) γp→ΛX
Λ→pπ-
Λ IM < 1.2
Ξ-(X) γp→Ξ-X
Ξ-→Λπ-
Λ→pπ-
Ξ- IM < 1.55
Λ IM < 1.2


n3pi Cut Study

  • Run 9003 (no EM background), ~5 MegaEvents, searching for γp→π+π+π-(n)
  • Reconstructed Signal Combos (DCutAction_ThrownTopology, DCutAction_AllTruePID) (% is Signal Remaining)
    • All is 34361 combos (events) of 59562 thrown n3pi in ~5 MegaEvent sample: 57.7% Acceptance
    • +/- 5σ cut on Thrown <---> Detected matching for DCutAction_AllTruePID.
Mattione Update 04212014 n3piCutStudy Signal.png


  • All Reconstructed Combos (% is Signal Purity)
Mattione Update 04212014 n3piCutStudy All.png


  • All Reconstructed Combos - Zoomed (% is Signal Purity)
Mattione Update 04212014 n3piCutStudy AllZoom.png


  • All Reconstructed Combos - Zoomed Further (% is Signal Purity)
Mattione Update 04212014 n3piCutStudy AllZoomMore.png