Difference between revisions of "Recoil proton reconstruction"
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* Eta missing mass distribution | * Eta missing mass distribution | ||
[[Image:p_eta_mis_mas.png | 300px]] | [[Image:p_eta_mis_mas.png | 300px]] | ||
− | # | + | # Missing masses were computed for different momentum ranges of |
generated protons. Reconstructed proton tracks were required to | generated protons. Reconstructed proton tracks were required to | ||
− | satisfy chi2/ndof < 10. The top left plot represents all | + | satisfy chi2/ndof < 10. The top left plot represents the missing mass distribution for all reconstructed protons. |
− | reconstructed protons. | + | |
Line 72: | Line 71: | ||
# Reconstruction bias (top). The mean value of residuals, < theta_rec - theta_gen >, as a function of theta_gen. | # Reconstruction bias (top). The mean value of residuals, < theta_rec - theta_gen >, as a function of theta_gen. | ||
# Angular resolution sigma(theta) in degrees (bottom). The distribution was fit to the function p1/x + p2 | # Angular resolution sigma(theta) in degrees (bottom). The distribution was fit to the function p1/x + p2 | ||
+ | |||
+ | * pi0 missing mass distribution | ||
+ | [[Image:p_pi_mis_mas.png | 300px]] | ||
+ | # Missing masses were computed for different momentum ranges of | ||
+ | generated protons. Reconstructed proton tracks were required to | ||
+ | satisfy chi2/ndof < 10. The top left plot represents the missing mass distribution for all reconstructed protons. |
Revision as of 21:47, 1 October 2011
gamma p -> p eta decays
- Recoil proton kinematics
- Proton polar angle versus proton momentum for generated events (top left)
- Momentum distributions for generated and reconstructed protons as a function of the p generated momentum (top right)
- Polar angle of reconstructed protons as a function of the proton generated momentum (middle left)
- Chisq/Ndof for reconstructed protons (middle right)
- Ndof distribution (bottom left)
- Ndof versus proton momentum (bottom right)
- Proton momentum residuals
- Proton momentum resolution and reconstruction bias
- Polar angle residuals
- Polar angle resolution
- Proton reconstruction efficiency
- Eta missing mass distribution
- Missing masses were computed for different momentum ranges of
generated protons. Reconstructed proton tracks were required to satisfy chi2/ndof < 10. The top left plot represents the missing mass distribution for all reconstructed protons.
gamma p -> p pi0 decays
- Recoil proton kinematics
- Proton polar angle versus proton momentum for generated events (top left)
- Momentum distributions for generated and reconstructed protons as a function of the p generated momentum (top right)
- Polar angle of reconstructed protons as a function of the proton generated momentum (middle left)
- Chisq/Ndof for reconstructed protons (middle right)
- Ndof distribution (bottom left)
- Ndof versus proton momentum (bottom right)
- Proton momentum and polar angle resolutions
- Reconstruction bias (top). The mean value of residuals, < p_rec - p_gen >, as a function of p_gen.
- Energy resolution dp/p (bottom). The distribution was fit to the function p1/sqrt(x) + p2
- Reconstruction bias (top). The mean value of residuals, < theta_rec - theta_gen >, as a function of theta_gen.
- Angular resolution sigma(theta) in degrees (bottom). The distribution was fit to the function p1/x + p2
- pi0 missing mass distribution
- Missing masses were computed for different momentum ranges of
generated protons. Reconstructed proton tracks were required to satisfy chi2/ndof < 10. The top left plot represents the missing mass distribution for all reconstructed protons.