Abstract
The reconstruction of multi-turn curling tracks is a big challenge for the drift chamber of the COMET [1] experiment. A method of deterministic annealing filter that implements a global competition between hits from different turns is introduced. This method assigns the detector measurements to the candidate track based on the weighted mean of fitting quality on different turns. We present here the study of multi-turn track fitting based on the simulated tracks. We found that the algorithm can successfully distinguish the hits from different turns.
Highlights
1.1 Overview of the COMET experimentThe observation of charged-lepton flavour violation (CLFV) would imply the need for an ambitious extension of the SM
The COMET experiment is designed to search for a CLFV transition through a neutrino-less muon to electron conversion in the presence of a nucleus N > e N
The Cylindrical Detector system (CyDet) for the COMET Phase-I consists of a Cylindrical Drift Chamber (CDC) and a set of trigger hodoscope counters
Summary
The observation of charged-lepton flavour violation (CLFV) would imply the need for an ambitious extension of the SM. The COMET experiment is designed to search for a CLFV transition through a neutrino-less muon to electron conversion in the presence of a nucleus N > e N. The event signature of muon to electron conversion is a 105 MeV monoenergetic electron generated in the field of an Al nucleus. The search for this process will reach the sensitivity of 3.1x10-15 for the COMET Phase-I. The experiment will take place at the J-PARC laboratory in Tokai, Japan using a pulse bunched 8 GeV proton beam slowextracted from the J-PARC main ring. Due to the feature of a pulsed beam, the prompt beam backgrounds can be eliminated by looking at tracks that are delayed by several hundred nanoseconds from the prompt beam flash
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