Mar 21 – 27, 2009
Europe/Prague timezone

Adaptive Vertex Reconstruction in CMS

Mar 24, 2009, 8:00 AM


Prague Congress Centre 5. května 65, 140 00 Prague 4, Czech Republic
Board: Tuesday 031
poster Event Processing Poster session


Dr Rudi Frühwirth (Institut fuer Hochenergiephysik (HEPHY)-Oesterreichische Akademi)


Reconstruction of interaction vertices is an essential step in the reconstruction chain of a modern collider experiment such as CMS; the primary ("collision") vertex is reconstructed in every event within the CMS reconstruction program, CMSSW. However, the task of finding and fitting secondary ("decay") vertices also plays an important role in several physics cases such as the reconstruction of long-lived particles like Kaons, or the identification of b-jets, i.e. the task of b-tagging. A very simple but powerful general-purpose vertex finding algorithm is presented that is based on the well-established adaptive vertex fitter to find and fit primary and secondary vertices.

Primary authors

Dr Rudi Frühwirth (Institut fuer Hochenergiephysik (HEPHY)-Oesterreichische Akademi) Dr Wolfgang Waltenberger (Institut fuer Hochenergiephysik (HEPHY)-Oesterreichische Akademi)

Presentation materials