Trigger Statistics Survey
Progress is being added in here.
- The ones which doesn't apply any cuts are done by me:
- e+e− → γ Υ(2S),
with Υ(2S) → Υ(1S) π+
π−, and Υ(1S) → l l
-
e+ e- → &tau+ &tau-
New!
-
B → ν anti-ν (γ)
New!
- The ones are being done:
-
γγ → pp̅,
γγ → π+π−,
γγ → π0π0
by selina
-
τ → l K0
by me (I'm waiting for Riccardo's instruction on his analysis)
-
B0 → η π0 (η → γγ),
B+- → η π+-(η → γγ)
by jim
-
B0B̅0 → (X l ν)(X l ν)
by david (he's waiting for his SP9)
-
τ → e γ,
τ → μ γ
probably by swagato
- The ones will not be updated:
-
e+e− → a2 π,
e+e− → φ η,
e+e− → φ ρ0,
e+e− → ρ+ ρ−,
e+e− → ρ0 ρ0
Kai claimed that the MC was home-produced before, and thus there is no SP9, and nobody's doing these modes.
- The ones with no respond from the analysts:
-
e+e− → γ X
with X =
2π 2π0,
2π π0,
4π,
4π 2π0,
6π,
μ+ μ−,
ππ
Anne Marie Lutz
-
B → μ ν,
B0 → Ks Ks
Jed Biesiada
-
B+- → D0 K+- (D0 → Ks π0)
Emmanuel Latour
Plan: emulate "tight" and "emergency" configuration.
DigiFRadiativeBhabha filter study
L1TNtupleXtcApp works again. Applied all the RadBhabha selection cuts as in L3TFilter package. Saved the angle between the photon and the closer track 1) at the IP, 2) at the EMC. Red is Sasha's events (from upper and lower ID matching), with factor 5 multiplied.
Also plotted the smaller-x. x is 2*(track's CM energy)/(beam's CM energy). This is basically the smaller CMS energy of tracks distribution (plot). Again Red is Sasha's events with factor 5. Clearly Sasha wants events with at least one low momentum electron. The ratio of events with smaller-x>0.7 (track's CM energy>~3.7GeV) is about 24%.
The cluster energy is plotted too. Again, Red is Sasha's events with factor 5.
For a reference, the cuts Sasha implements are:
SAMPLE 1:
* p1mag < 4.7 GeV/c;
* some PID vetoes.
SAMPLE 2:
* 4.0 < p1mag < 6.0 (momentum of the fastest track in the CM);
* p2mag < 3.5 (momentum of the second fastest track in the CM);
* There is a neutral in the event with raw EMC energy above 0.5 GeV/c;
* The angle between the highest-energy neutral and the second-fastest track is > 0.2 rad.
* |p1mag| + |p2mag| + energies of all neutrals >= 11 GeV (LAB).
* Additionally, the faster of the two tracks has to satisfy the following
conditions: eraw/p > 0.5 (LAB);