HES-HKS & KaoS meetingToshi Gogami25/Apr/2013

Contents

Raster Correction

Analysis flow

Initial ROOT file

Tuning1. Event selection

• Fitting mean+ 2σ etc.

2. Matrix tuning for selected events

3. Create new missing mass spectra

4. Fitting for new MM Output logs

Iteration

After Iteration

2. Create new ROOT file by new matrices

1. Select better matrices• By width(Λ,Σ,12LB)

ROOT file

LOOP

KRD

Analysis flow

Initial ROOT file

Tuning1. Event selection

• Fitting mean+ 2σ etc.

2. Matrix tuning for selected events

3. Create new missing mass spectra

4. Fitting for new MM Output logs

Iteration

After Iteration

2. Create new ROOT file by new matrices

1. Select better matrices• By width(Λ,Σ,12LB)

ROOT file

LOOP

KRDRaster Correction

Present Raster Correction

OFFSET

Correction

Correction by a linear function

Λw/o RC

Correction by a linear function

Λw/o RC

Comparison

Mean (Λ) Width (Λ) Mean (Σ0) Width (Σ0)

w/o RC 939±27 1434±31 1330±41 1157±43

Present RC -248±24 1149±26 -191±189 1242±126

New RC 932±26 1387±29 1310±38 1095±39

w/o RC

Present RC

New RC

Coding is in progress

Estimate the raster correction functions every loop

Outlook

• There was a shift due to the raster correctionWill be fix soon

• Scaling factor for the energy loss of CH2 targetNeed to be estimated again

( by using H2O, 12C target data )

他

• 学振 PD– 5 月 9 日 締切 ( 受入研究機関必着

)• Paper (HLAB MEETING)• 履修登録