Orateur
Dr
Ferenc Sikler
(KFKI Research Institute for Particle and Nuclear Physics)
Description
Tracker detectors can be used to identify charged particles based on their
global chi value obtained during track fitting with the Kalman filter. The
proposed method is independent of the traditional way of identification using
deposited energy.
This approach builds upon the knowledge of detector material and local position
resolution, using the known physics of multiple scattering and energy loss. The
study using simplified models of present LHC experiments shows that pion-kaon
and pion-proton unfolding is possible at low momentum. The separation is better
than 1 sigma for p < 0.9 and 1.4 GeV/c, respectively.
Since the chi value of the filter is equivalent to that of a global fit, the
method is suitable for any minimum chi^2 track fit that properly models
energy-loss and scattering effects. In general, the performance of an
experiment is determined by the number of good sensitivity split measurements,
and it is also a strong function of particle momentum.
See recent preprint at http://arxiv.org/abs/0911.2624 [physics.ins-det],
submitted to Nucl Inst Meth A.
| Please indicate "poster" or "plenary" session. Final decision will be made by session coordinators. | plenary |
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Auteur principal
Dr
Ferenc Sikler
(KFKI Research Institute for Particle and Nuclear Physics)
