Speaker
Nancy Marinelli
(University of Notre Dame)
Description
A seed/track finding algorithm has been developed for
reconstruction of e+e- from converted photons. It combines
the information of the electromagnetic calorimeter with
the accurate information provided by the tracker.
An Ecal seeded track finding is used to locate the approximate
vertex of the conversion. Tracks found with this method are then
used as input to further inside-out tracking aiming at
reconstructing fully and very efficiently the conversion track pairs.
Converted photon objects are finally built from the seeding
ECAL energy deposit, a pair of opposite tracks and
a conversion vertex, determined by fitting the two tracks
to a common vertex.
Results on reconstruction efficiency of
converted photons, as well as on fake rate when the photon did not
convert, will be shown for single isolated photons and for photons from
H->gammagamma events with 2.10^33 LHC luminosity.
| Submitted on behalf of Collaboration (ex, BaBar, ATLAS) | CMS |
|---|
Author
Nancy Marinelli
(University of Notre Dame)
