Estimation of the material budget from tracker data to improve the quality of the track fit

✍ Scribed by Moritz Nadler; Rudolf Frühwirth

• Book ID: 104068299
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 257 KB
• Volume: 648
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2011.05.067

✦ Synopsis

We present two methods to improve the reconstruction of particle tracks by explicit estimates of the amount of material passed by the tracks. The first one is based on a linearized least-squares estimator, the second one on the combination of a forward and a backward Kalman filter. Our simulation studies show that it is possible to obtain a chi-square distribution that is indistinguishable from the one using the true material information. One of the methods has been validated using test beam data. Results of this validation are presented.