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Simulation of Spherical Uniform Distribution for HKS Particle Width Analysis

This document presents a detailed analysis of the simulation of spherical uniform distribution for HKS particle events, focusing on the momentum, angles, and widths of generated peaks. Key findings include the widths of the 12ΛB g.s. state, which is observed to be wider than others, with specific measurements including FWHM of 523.9 ± 30.6 keV and mean of 36.27 ± 13.42 keV. The document also outlines the simulation conditions, including the solid angle, peak position differences, and event generation statistics. For more insights, refer to the full report available at the provided link.

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Simulation of Spherical Uniform Distribution for HKS Particle Width Analysis

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  1. HES HKS meeting 4/15/2010 T.Gogami

  2. Today’s talk • GEANT4 • spherical uniform distribution (HKS) • 12ΛB g.s. width • simulation

  3. spherical uniform distribution for HKS particles distribution at r=1

  4. HKSPrimaryGeneratorAction.cc black  generated events red  accepted events by HKS input/sample.in θ, Δθ , φ , Δφ θ ; same as HES side (backup)

  5. spherical uniform distribution for HKS particles distribution at r=1 • p = 1.2±0.3 [GeV/c] • θ = 0.124±0.124 [rad] • φ = 2.64±0.5 [rad] • No collimator

  6. spherical uniform distribution for HKS • p = 1.2±0.3 [GeV/c] • θ = 0.124±0.124 [rad] • φ = 1.57±1.57 [rad] • No collimator Momentum

  7. HKS solid angle simulation condition solid angle ~11 [msr] • p = 1.2±0.3 [GeV/c] • θ = 0.124±0.124 [rad] • φ = 1.57±1.57 [rad] • No collimator

  8. 12ΛB g.s. width is wider than others +100 [keV] [MeV] [MeV] +150 [keV] [MeV] [MeV] generated iterated num. = 10000 All event num. =700 = N second peak event num. = N/4 second peak pos. = +100,150,200[keV] resolution = 500 [keV] background : peak max. = 1 : 4 +200 [keV]

  9. 12ΛB g.s. width is wider than others • peak pos. difference = +150 [keV] • width (FWHM) = 523.9 ± 30.6(1σ) [keV] • mean = 36.27 ± 13.42 (1σ) [keV] document http://lambda.phys.tohoku.ac.jp/~gogami/Gpdf/width_sim2.pdf

  10. summary and to do SUMMARY • HKS spherical uniform distribution • HKS solid angle ~11 [msr] • width simulation • peak pos. difference = +150 [keV] • width (FWHM) = 523.9 ± 30.6(1σ) [keV] • mean = 36.27 ± 13.42 (1σ) [keV] • document • http://lambda.phys.tohoku.ac.jp/~gogami/Gpdf/width_sim2.pdf • Real data • EH • documents • GCOE RA • GCOE 若手イニシアティブA ~4/21 • 奨学金 ~4/30 • 学振 ~5/6 TO DO

  11. backup

  12. HESPrimaryGeneratorAction.cc 4/8/2010 meeting ppt input/sample.in θ, Δθ , φ , Δφ Δθ θ Δθ min max Δa Δa a

  13. 12ΛB g.s. width is wider than others +100 [keV] [MeV] [MeV] +150 [keV] [MeV] [MeV] generated iterated num. = 10000 All event num. =700 = N second peak event num. = N/2 second peak pos. = +100,150,200[keV] resolution = 500 [keV] background : peak max. = 1 : 4 +200 [keV]

  14. 12ΛB g.s. width is wider than others +100 [keV] [MeV] [MeV] +150 [keV] [MeV] [MeV] generated iterated num. = 10000 All event num. =700 = N second peak event num. = N/3 second peak pos. = +100,150,200[keV] resolution = 500 [keV] background : peak max. = 1 : 4 +200 [keV]

  15. 12ΛB g.s. width is wider than others document http://lambda.phys.tohoku.ac.jp/~gogami/Gpdf/width_sim2.pdf

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