Difference between revisions of "Recoil proton reconstruction"
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[[Image:p_pi_theta_res.png | 300px]] | [[Image:p_pi_theta_res.png | 300px]] | ||
| − | # Reconstruction bias (top). The mean value of residuals, < theta_rec - theta_gen >, | + | # Reconstruction bias (top). The mean value of residuals, < theta_rec - theta_gen >, as a function of theta_gen. |
| − | as a function of theta_gen. | + | |
# Angular resolution dtheta/p (bottom). The distribution was fit to the function p1/x + p2 | # Angular resolution dtheta/p (bottom). The distribution was fit to the function p1/x + p2 | ||
Revision as of 21:42, 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
No cuts
Chisq/Ndof < 10
- Proton momentum resolution and reconstruction bias
- Polar angle residuals
- Polar angle resolution
- Proton reconstruction efficiency
- Eta missing mass distribution
- Distributions were computed for different momentum ranges of
generated protons. Reconstructed proton tracks were required to satisfy chi2/ndof < 10. The top left plot represents 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 dtheta/p (bottom). The distribution was fit to the function p1/x + p2
