Spring 2017 Analysis Launch Cuts
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PreSelect Cuts
- For a given DChargedTrack, at least one hypothesis must have a hit in either: BCAL/FCAL/TOF/SC.
- For a given DNeutralShower, it must at least have a shower energy of 100 MeV/c.
- For neutral showers in the BCAL, they must have hits in at least 2 cells.
Mass Cuts
- Note that if there are no particles missing, there is also a cut on the missing energy: -3.0 < Missing Energy (GeV) < 3.0
- Detected Particles
PID | Invariant Mass (GeV/c2) | Missing Mass2 (GeV/c2)2 |
---|---|---|
None | NA | -0.1 < MM2 < 0.1 |
γ | NA | -0.1 < MM2 < 0.1 |
e+ | NA | None |
e- | NA | None |
π- | None | -1.0 < MM2 < 1.0 |
π+ | None | -1.0 < MM2 < 1.0 |
K+ | None | None |
K- | None | None |
p | NA | -0.5 < MM2 < 4.41 |
p̅ | NA | -0.5 < MM2 < 4.41 |
n | None | -0.5 < MM2 < 4.41 |
- Decaying Mesons
PID | Invariant Mass (GeV/c2) | Missing Mass2 (GeV/c2)2 |
---|---|---|
π0 | 0.08 < IM < 0.19 | -1.0 < MM2 < 1.0 |
KS | 0.3 < IM < 0.7 | None |
η | 0.4 < IM < 0.7 | None |
η' | 0.6 < IM < 1.3 | None |
φ | 0.8 < IM < 1.2 | None |
D0 | 1.8 < IM < 1.92 | None |
J/ψ | None | None |
- Decaying Baryons
PID | Invariant Mass (GeV/c2) | Missing Mass2 (GeV/c2)2 |
---|---|---|
Λ | 1.0 < IM < 1.2 | None |
Σ0 | 1.1 < IM < 1.3 | None |
Σ+ | 1.1 < IM < 1.3 | None |
Σ- | 1.1 < IM < 1.3 | None |
Ξ0 | 1.1 < IM < 1.5 | None |
Ξ- | 1.1 < IM < 1.5 | None |
Ω- | None | None |
Λc | 2.0 < IM < 2.6 | None |
Timing Cuts
PID | BCAL/RF Δt (ns) | TOF/RF Δt (ns) | FCAL/RF Δt (ns) | SC/RF Δt (ns) | ||
---|---|---|---|---|---|---|
p | dE/dx > e^(-3.93024*p + 3.0) + 1.0 | None | None | None | None | None |
p̅ | dE/dx > e^(-3.93024*p + 3.0) + 1.0 | None | None | None | None | None |
π+ | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
π- | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
K+ | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
K- | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
e+ | dE/dx < 5.5 | dE/dx < 3.5 | None | None | E/p > 0.67 | E/p > 0.7 |
e- | dE/dx < 5.5 | dE/dx < 3.5 | None | None | E/p > 0.67 | E/p > 0.7 |
Track Energy Cuts
PID | CDC dE/dx (keV/cm) | FDC dE/dx (keV/cm) | SC dE/dx (MeV/cm) | TOF dE/dx (MeV/cm) | BCAL Shower_E/Track_p (c) | FCAL Shower_E/Track_p (c) |
---|---|---|---|---|---|---|
p | dE/dx > e^(-3.93024*p + 3.0) + 1.0 | None | None | None | None | None |
p̅ | dE/dx > e^(-3.93024*p + 3.0) + 1.0 | None | None | None | None | None |
π+ | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
π- | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
K+ | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
K- | dE/dx < e^(-6.0*p + 2.80149) + 2.55 | None | None | None | None | None |
e+ | dE/dx < 5.5 | dE/dx < 3.5 | None | None | E/p > 0.67 | E/p > 0.7 |
e- | dE/dx < 5.5 | dE/dx < 3.5 | None | None | E/p > 0.67 | E/p > 0.7 |
Kinematic Fit
- If a kinematic fit has been performed, it must have converged.