6-9 March 2017
Europe/Zurich timezone

Hough transform based curling track finding for BESIII and COMET multi turn track fitting

9 Mar 2017, 09:15


1: Parallel and discrete pattern recognition


Prof. Ye Yuan (IHEP, CAS, China)


In order to overcome the difficulty brought by the curling charged tracks in the BESIII drift chamber,
we introduce the Hough transform based tracking method. This method is used as the supplementary to find
low transverse momentum tracks. This tracking algorithm is realized in C++ in BOSS (BESIII offline software system) and the performance has been checked by both Monte Carlo data and real data. We show that this tracking method could enhance the reconstruction efficiency in the low transverse momentum region.
Track reconstruction in the COMET Phase-I drift chamber is characterized by large amount of multi-turn curling tracks. We present the method based on the Deterministic Annealing Filter (DAF) and implements a global competition. The method assigns the detector measurements to the track assumption on different turns. This method is studied on the simulated tracks in the COMET drift chamber. We show that it can be a candidate to the assign hits on different track turns.

Primary authors

Yao Zhang (China) Prof. Ye Yuan (IHEP, CAS, China) Mr Jin Zhang (IHEP, CAS, China) Dr Yao Zhang (IHEP,CAS,China)

Presentation Materials