Application of vertex and mass constraints in track-based alignment

Amoraal, J.; Pellegrino, A.; Palacios, J.; Gersabeck, M.; Parkes, C.; Vecchi, S.; Raven, G.; Lambert, R.W.; Dupertuis, F.; Märki, R.; Hicheur, A.; Hutchcroft, D.; Viret, S.; Blouw, J.; Deissenroth, M.; Martinelli, M.; Salzmann, C.; Maciuc, F.; Steinkamp, O.; Schneider, O.; Blusk, S.; Uwer, U.; van der Eijk, R.; Tuning, N.; Needham, M.; Merk, M.; Schiller, M.; Chiapolini, N.; Kozlinskiy, A.; Hulsbergen, W.; Pozzi, S.; Fave, V.; Rodrigues, E.; Nicolas, L.; Borghi, S.; van Tilburg, J.; Simioni, E.; Cattaneo, M.; Conti, G.

doi:10.1016/j.nima.2012.11.192

Article
Report number	arXiv:1207.4756
Title	Application of vertex and mass constraints in track-based alignment
Author(s)	Amoraal, J. (NIKHEF, Amsterdam) ; Blouw, J. (Heidelberg U.) ; Blusk, S. (Syracuse U.) ; Borghi, S. (Glasgow U. ; Manchester U.) ; Cattaneo, M. (CERN) ; Chiapolini, N. (Zurich U.) ; Conti, G. (LPHE, Lausanne) ; Deissenroth, M. (Heidelberg U.) ; Dupertuis, F. (LPHE, Lausanne) ; van der Eijk, R. (NIKHEF, Amsterdam) ; Fave, V. (LPHE, Lausanne) ; Gersabeck, M. (CERN) ; Hicheur, A. (LPHE, Lausanne) ; Hulsbergen, W. (NIKHEF, Amsterdam) ; Hutchcroft, D. (Liverpool U.) ; Kozlinskiy, A. (NIKHEF, Amsterdam) ; Lambert, R.W. (NIKHEF, Amsterdam) ; Maciuc, F. (Heidelberg, Max Planck Inst.) ; Märki, R. (LPHE, Lausanne) ; Martinelli, M. (NIKHEF, Amsterdam) ; Merk, M. (NIKHEF, Amsterdam) ; Needham, M. (Edinburgh U.) ; Nicolas, L. (LPHE, Lausanne) ; Palacios, J. (NIKHEF, Amsterdam ; CERN) ; Parkes, C. (Manchester U.) ; Pellegrino, A. (NIKHEF, Amsterdam) ; Pozzi, S. (INFN, Ferrara) ; Raven, G. (NIKHEF, Amsterdam) ; Rodrigues, E. (Glasgow U. ; Manchester U.) ; Salzmann, C. (Zurich U.) ; Schiller, M. (NIKHEF, Amsterdam) ; Schneider, O. (LPHE, Lausanne) ; Simioni, E. (NIKHEF, Amsterdam) ; Steinkamp, O. (Zurich U.) ; van Tilburg, J. (Heidelberg U.) ; Tuning, N. (NIKHEF, Amsterdam) ; Uwer, U. (Heidelberg U.) ; Vecchi, S. (INFN, Ferrara) ; Viret, S. (Glasgow U.)
Publication	2013
Imprint	20 Jul 2012
Number of pages	18
Note	Comments: 18 pages, 6 figures 18 pages, 6 figures
In:	Nucl. Instrum. Methods Phys. Res., A 712 (2013) 48-55
DOI	10.1016/j.nima.2012.11.192
Subject category	Detectors and Experimental Techniques
Abstract	The software alignment of planar tracking detectors using samples of charged particle trajectories may lead to global detector distortions that affect vertex and momentum resolution. We present an alignment procedure that constrains such distortions by making use of samples of decay vertices reconstructed from two or more trajectories and putting constraints on their invariant mass. We illustrate the method by using a sample of invariant-mass constrained vertices from D^0 --> K^- pi^+ decays to remove a curvature bias in the LHCb spectrometer.
Copyright/License	arXiv nonexclusive-distrib. 1.0