Difference between revisions of "NnL analysis meeting-20210331"
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| Line 45: | Line 45: | ||
=Discussion= | =Discussion= | ||
| − | * What needs to be done / checked | + | * What needs to be done / checked ? |
** H contamination → Shape of Λ may be better to be asymmetry to discuss about the Σ bound region. (→ Hampton) | ** H contamination → Shape of Λ may be better to be asymmetry to discuss about the Σ bound region. (→ Hampton) | ||
** Single peak inclusion in Al data for the tuning → any other peaks grow? (→ Japan) | ** Single peak inclusion in Al data for the tuning → any other peaks grow? (→ Japan) | ||
| Line 52: | Line 52: | ||
* Questions to Hampton group | * Questions to Hampton group | ||
** How to estimate | ** How to estimate | ||
| − | *** the angular resolutions (Δ x' and &Delta y')? | + | *** the angular resolutions (Δ x' and &Delta y')? → Hole size |
*** QF Λ shape including the Σ ? | *** QF Λ shape including the Σ ? | ||
| − | *** the differential cross sections and their errors (acceptance correction etc.)? | + | *** the differential cross sections and their errors (acceptance correction etc.)? → ratio to QF Λ (assumed to be 400 nb/sr). |
=References for discussion= | =References for discussion= | ||
Revision as of 12:17, 31 March 2021
nnΛ Analysis Meeting
Information
- 21:00- March 31, 2021 (JST)
- Participants: Nue, Liguang, Pete, Joerg, Franco, Guido, Toshi, Sho, Bishnu, K.N.Suzuki, K. Itabashi, Nathaniel
- via BlueJeans
Reports
Hampton
(10 min) Summary by L. Tang
- Matrix tuning
- Angle resolution is limited due to the hole size.
→ Δθ = 3.4 mrad
- Angle resolution is limited due to the hole size.
- The intrinsic mass resolution
- Large A dependence because of the large angle contribution.
(20 + 10 min) Details by B. Pandey
- Al peaks are involved in the tuning.
Kyoto
(5 min) Japanese Analysis Summary by T. Gogami
Presentation file = JLabMeeting_20210331_gogami.pdf
Supplement (angle definition) = JLabMeeting_20210331_gogami_2.pdf
- Expected mass resolution
- Momentum tuning with Λ(H), Σ(H), and Λ(T)
- Cross section
(25 + 10 min) Kyoto analysis by K.N. Suzuki
- Resolution study by Geant4 simulation
- Angle resolution: Δ θ = 1.2 mrad in σ
- Missing mass resolution; no strong mass dependence was estimated.
- Systematic error on BΛ
- Cross section analysis
Tohoku
(10 + 5 min)Tohoku analysis (1) by S. Nagao
Presentation file = nagao20210331_JLab_analysis_meeting.pdf
- The intrinsic mass resolution
- Tuning with Al data
(20 + 10 min) Tohoku analysis (2) by K. Itabashi
Discussion
- What needs to be done / checked ?
- H contamination → Shape of Λ may be better to be asymmetry to discuss about the Σ bound region. (→ Hampton)
- Single peak inclusion in Al data for the tuning → any other peaks grow? (→ Japan)
- Information about the matrix tuning and matrices (which have not been involved Al tuning at all) will be provided to Japanese group (→ Hampton)
- Questions to Hampton group
- How to estimate
- the angular resolutions (Δ x' and &Delta y')? → Hole size
- QF Λ shape including the Σ ?
- the differential cross sections and their errors (acceptance correction etc.)? → ratio to QF Λ (assumed to be 400 nb/sr).
- How to estimate
References for discussion
- from Hampton
- TECHNIQUE_OF_MATRIX_TUNE_Tang2021Mar.pdf (Mar 15, 2021)
- Resolution_optical_tune_Tang2021Mar.pdf (Mar 15, 2021)
- from Tohoku
- from Kyoto
- Mar 24, 2021: Simple test of matrix tuning by using simulated data: JLabMeeting_20210324_gogami.pdf
- June 18, 2020: Missing mass spectra: JLabMeeting_20200618_gogami.pdf
- May 01, 2020: Angle resolution (Summary of Suzuki’s study): nnL_AnalysisNote_20200501_gogami.pdf
- Apr 24, 2020: Comments on the missing mass resolution： JLabMeeting_20200424_gogami.pdf
- Apr 21, 2020: Missing mass resolution (Fake peak study by Itabashi is found in the last part): nnL_AnalysisNote_20200421_gogami.pdf
- Apr 16, 2020: How to treat angle resolution for the intrinsic resolution estimation (here, the worse resolution for angle is used compared to the recent values though)： JLabMeeting_20200416_gogami.pdf
- Mar 13, 2020: The expected resolution, the number of events, items to be reexamined (p. 31, 32): JLabMeeting_20200313_gogami.pdf