1. HES-HKS & KaoS meeting 1Nov2013 Toshi Gogami 2009 年の今頃

2. Contents Blind analysis code development svn File://(name)@lambda.phys.tohoku.ac.jp/users/gogami/svnrepos/dragon/sim/g4coin

3. Blind analysis flow chart

4. Distorted matrices (First sample) X e FP = 0.2 + RandGaus(X e FP,0.008) [cm] X K FP = RandGaus(X K FP,0.015) [cm] Farm : (HES) /home/gogami/g4hes/ana/f2t/readvalue.C (HKS) /home/gogami/g4hks/ana/f2t/readvalue.C

5. Variables p 0 : generated momentum p : reconstructed momentum mm 0 : missing mass with p 0 mm : missing mass with p

6. First sample for blind analysis Electron momentum Kaon momentum ~ +1MeV -500 keV Missing Mass

7. First sample for blind analysis Electron momentum Kaon momentum ~ +1MeV -500 keV Missing Mass Red : reconstructed Black : generated

8. Analysis condition Matrix tuning  Iteration 5  Loop 5 今回ループ毎に選ばれたマトリク ス 2,1,3,4,3

9. Missing mass の動き 1 2 3 4 5

10. Missing mass comparison Mean: -580 MeV/c 2 σ : 140 keV/c 2 Mean: -6 keV/c 2 σ : 120 keV/c 2

11. Momentum comparison K + momentum e’ momentum ずれてる …

12. Momentum correlation

13. Red : Tuned Black : generated

14. Momentum correlation(2)

15. 結果・考察  Blind analysis コードは動いた！  Tune 後、 Missing mass は程よく見えても核粒子の 運動量は本来の値からずれる事が十分あり得る

16. Missing mass form 7 Li target 水で角度 7ΛHe g.s で運動量

17. Outlook Matrix tuning – Angle with water Blind analysis – Distorted matrix generation Cross section – Virtual photon flux with HES-HKS acceptance matching 28 Λ Al – Histogram or/and ROOT file