total flux uncertainty : 11% next : momentum distribution uncertainty

Presentation on theme: "total flux uncertainty : 11% next : momentum distribution uncertainty"— Presentation transcript:

1 total flux uncertainty : 11% next : momentum distribution uncertainty
方針 beam MC のtrue momentum binごとにsys. error を見積もる emulsion MC から得たmatrix で true  reconstructed の変換を行って最終結果を得る true momentum bin 間の誤差相関も見積もる similar scheme as neutrino flux study covariance matrix momentum peak 位置やmean momentum などに対しても 　covariance matrix に応じてランダムに振ることで 　誤差をつけて比較できるはず

2 muon momentum bins まずは以前提案した16bin で進める
entry 数のバランスはいい感じ 250kA emulsion MC truth mom. recon. mom. 250kA emulsion data

3 analysis systematic errors on truth mom. bins :
fractional error で与える truth-rec. conversion matrix : Nrec. 側で規格化 するとこれは各Nrec. へのNtrue からの寄与比になので 　 fractional error はそのまま伝搬させられる

4 truth-rec correlation
250kA emulsion MC 良い相関が見えている 低運動量で、若干rec.が上に出やすい?

5 truth-rec correlation
250kA emulsion MC

6 rectruth conversion matrix
250kA emulsion MC 横方向の和 =1 fractional error の換算に使う

7 truthrec conversion matrix
250kA emulsion MC 縦方向の和=1 の場合 こっちでやるならabsolute error で伝搬させる

8 no data region ambitious? idea pion momentum > 7.6 GeV/c
NA61 pi+ NA61 pi- no data region pion momentum > 7.6 GeV/c pion emission angle < 10mrad ambitious? idea if excess >5GeV/c region is enough significant after counting sys. errors other than pion production suggestion from emulsion / MUMON measurement ? (although pi+/pi- is cannot be separated)

9 rec mom. > 5GeV/c true mom. > 3.2GeV/c 87.4%
250kA emulsion MC rec. mom > 5GeV/c 250kA emulsion MC rec. mom > 7GeV/c true mom. [GeV/c] true mom. [GeV/c] rec mom. > 5GeV/c true mom. > 3.2GeV/c 87.4% rec mom. > 7GeV/c true mom. > 5GeV/c 75.4%

10 true muon mom. : pion momentum
0kA FLUKA MC true mom > 3.2GeV/c 0kA FLUKA MC true mom > 3.2GeV/c 0kA FLUKA MC true mom > 5GeV/c 8 pion mom. [GeV/c] pion mom. [GeV/c] true mom > 3.2 GeV/c : pion mom > 8GeV/c pion purity : 77% (pi+50%, pi- 27%) true mom > 5 GeV/c : pion mom > 10GeV/c pion purity : 80% (pi+53%, pi- 27%)

11 pion angle true mom > 3.2 GeV/c : pion <10mrad = 71%
0kA FLUKA MC true mom > 3.2GeV/c 0kA FLUKA MC true mom > 5GeV/c pion angle. [rad] pion angle. [rad] true mom > 3.2 GeV/c : pion <10mrad = 71% true mom > 5 GeV/c : pion < 10mrad = 75%

12 pion angle 0kA sample is better for this study 0kA FLUKA MC
true mom > 3.2GeV/c 250kA FLUKA MC true mom > 3.2GeV/c pion angle. [rad] pion angle. [rad] 0kA sample is better for this study