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Add Condensates to the Candidate

The algorithms to add condensates use different methods:

  1. Maximize Number of Hit Cells

    MUFFIN looks for the condensate which, if added to the seed, maximizes the number of cells hit by the trajectory fitted through the seed and the condensate. It then declares both condensates as the new seed and looks for the next condensate which maximizes the number of hit cells. MUFFIN only allows candidates for which the fitted trajectory hits all condensates.

  2. Maximize Number of Hit Cells Blown Up

    This algorithm is just like the algorithm described above but the cell volumes are artificially increased by projecting the corners along the line connecting them with the cell center by a constant value. This improves the finders efficiency because during the candidate search only the quick linear regression line fit can be used which is not accurate enough.

  3. Maximize Occupancy

    This algorithm is just like the one described above only that instead of adding the condensate which maximizes the number of cells hit this algorithm adds the condensate which maximizes the occupancy, i.e. the ratio of the number of cells of this candidate hit by the fitted trajectory over the number of cells of the calorimeter hit by the trajectory.

  4. Add Condensates with Minimum Hit Ratio

    In this algorithm a condensate is added to a candidate if the hit ratio of the sum of condensate and candidate is bigger than . The hit ratio is the ratio between the number of cells of a candidate hit by the fitted trajectory over the total number of cells in the candidate.


next up previous contents
Next: Candidate Veto Up: Condensate Based Finder Previous: Condensate Finder Seed   Contents
Els de Wolf
1999-12-20