Input to isEM

1
Input to isEM()
2

• 12 bits
• 4 bits EM only (cluster /shower)
• 4 bits unused
• 4 bits tracking related
• dependance upon ?
• 6 ? regions
• dependance upon low / high luminosity
• current implementation low luminosity
• photons/electrons

3
Calorimetry Inputs Eta

• ? from 2nd Calo sampling
• cluster-gt etaBE(2) gt 2.47
• outside range

4
Calorimetry Inputs hadronique leakage
2

• Raphad ethad1/et_37 ou 0
• Et_37 cluster -gte() / cosh (eta2)
• Ethad1 Et leakage in first sampling of hadronic
  calorimeter

5
isEM/ bit 1 1
6
Calorimetry Inputs 2nd sampling
4

• e277  shower energy dans 77 dans le 2nd
  sampling
• e277 lt 0
• e237/e277 lt CutReta37 0.91, 0.915, 0.77,
  0.92, 0.85
• Weta2 corrected width in 3x5 cells in the 2nd
  samp
• weta2 gt CutWeta2c 0.0115, 0.012, 0.0125,
  0.012, 0.013

7
Calorimetry Inputs 1st sampling
8

• Le defi !
• 6 variables interviennent
• f1 (shower) fraction of energy in 1st sampling
• emax2 (shower) 2nd maximum in strips
• delta_emax2 f(emax2,et_37)
• emin (shower) energy of strip with minimum btw
  max 1 2
• fracm (shower) energy outside core (e(-7)
  e(-3))/e(-7)
• weta1c corrected width in 3 strips in the 1st
  sampling
• wtot total width in em sampling in 1to 20
  strips

8
Calorimetry Inputs 1st sampling
9
Tracker Inputs Number of Hits

• cut on eta_track not used
• B-layer hits lt 1
• Pixel hits lt 1
• Pixel SCT hits lt 7
• d0 gt 0.2 (unite ?)

10
Tracker inputs E-p matching
1024

• E/p gt 4 ou lt 0.7
• ?? (1st sampling) gt 0.02
• ?? (2nd sampling) gt 0.05

11
Tracker inputs TRT hits
2048

• r Nb of High Thresholds Hits/ Nb of Thresholds
  hits ou 0
• r lt 0.10, 0.08, 0.2, 0.10, 0.10, -1.