CVTRec::UTracks Bank Details
reconstructed CVT tracks
| Item Name | Type | Description |
|---|---|---|
ID |
short |
ID |
nKFIters |
byte |
number of kalman filter iterations |
c_x |
float |
x-coordinate of a helical trk point extrapolated to a cylinder at 25 cm radius from the lab origin (cm unit) |
c_y |
float |
y-coordinate of a helical trk point extrapolated to a cylinder at 25 cm radius from the lab origin (cm unit) |
c_z |
float |
z-coordinate of a helical trk point extrapolated to a cylinder at 25 cm radius from the lab origin (cm unit)b |
c_ux |
float |
x-coordinate of a helical trk direction extrapolated to a cylinder at 25 cm radius from the lab origin (cm unit) |
c_uy |
float |
y-coordinate of a helical trk direction extrapolated to a cylinder at 25 cm radius from the lab origin (cm unit) |
c_uz |
float |
z-coordinate of a helical trk direction extrapolated to a cylinder at 25 cm radius from the lab origin (cm unit) |
pathlength |
float |
total pathlength from the origin to the reference point (in cm) |
q |
byte |
charge |
p |
float |
total momentum |
pt |
float |
transverse momentum |
phi0 |
float |
helical track fit parameter: phi at DOCA |
tandip |
float |
helical track fit parameter: dip angle |
z0 |
float |
helical track fit parameter: value of z at the DOCA |
d0 |
float |
helical track fit parameter: Distance of Closest Approach |
cov_d02 |
float |
helical track fit covariance matrix element : delta_d0^2 |
cov_d0phi0 |
float |
helical track fit covariance matrix element : delta_d0.delta_phi0 |
cov_d0rho |
float |
helical track fit covariance matrix element : delta_d0.delta_rho |
cov_phi02 |
float |
helical track fit covariance matrix element : delta_phi0^2 |
cov_phi0rho |
float |
helical track fit covariance matrix element : delta_phi0.delta_rho |
cov_rho2 |
float |
helical track fit covariance matrix element : delta_rho.delta_rho |
cov_z02 |
float |
helical track fit covariance matrix element : delta_z0^2 |
cov_z0tandip |
float |
helical track fit covariance matrix element : delta_z0.delta_tandip |
cov_tandip2 |
float |
helical track fit covariance matrix element : delta_tandip^2 |
chi2 |
float |
Fit chi^2 |
ndf |
short |
Fit ndf |
pid |
int |
PID assumption |
seedID |
short |
ID of track seed |
xb |
float |
x offset |
yb |
float |
y offset |
status |
short |
track status : nabc (n = KF iterations a = nb SVT crosses, b = nb BMT Z clusters, c = nb BMT C clusters, used in fit) |