https://indico.cern.ch/getFile.py/access?contribId=2&resId=0&materialId=slides&confId=187740

From that presentation, the L0bCVLN and σCVLN were used as reference for the muon trigger Lint. We are going to try the same conception, using the L0bCVLN / σCVLN and L0a(EMCEGA)/L0b(EMCEGA) ratios for the events used in this analysis.

The total cross section for these events are: where

Lint = (L0bCVLN / σCVLN) * (L0aEMCEGA/ L0bEMCEGA)

From the logBook:

L0aEMCEGA --> CPBI2EGA-B-NOPF-CENTNOTRD__SEP__L0a

L0bEMCEGA --> CPBI2EGA-B-NOPF-CENTNOTRD__SEP__L0b

L2aEMCEGA --> CPBI2EGA-B-NOPF-CENTNOTRD__SEP__L2a (corresponds to the number of events recorded for the EMCEGA)

L0bCVLN --> CVLN-B-NOPF-ALLNOTRD__SEP__L0b

where

(L0bCVLN / σCVLN) --> Corresponds to the total luminosity delivered by the LHC during the specific run.

The Lint = (L0bCVLN / σCVLN) * (L0aEMCEGA/ L0bEMCEGA) corresponds to the total Lint taken in the specific runs, but not the Lint used in the analysis, which depends upon the number of events reconstructed and analyzed. The fraction of events used was estimated as follows:

FractionAnalyzed=TotalNeventsAnalyzed/Total(L2aEMCEGA)

The table 1 shows the summary of the counters for the trigger classes discussed in this page, and also a complete Lint estimation for the events used in this analysis.

Table (1) - Lint estimation for the 2.2M events used in this analysis

-- MarcelFigueredo - 26-Jul-2012