Mapping the material in the LHCb vertex locator using secondary hadronic interactions

Alexander, M. et al. (2018) Mapping the material in the LHCb vertex locator using secondary hadronic interactions. Journal of Instrumentation, 13(6), P06008. (doi:10.1088/1748-0221/13/06/P06008)

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Abstract

Precise knowledge of the location of the material in the LHCb vertex locator (VELO) is essential to reducing background in searches for long-lived exotic particles, and in identifying jets that originate from beauty and charm quarks. Secondary interactions of hadrons produced in beam-gas collisions are used to map the location of material in the VELO. Using this material map, along with properties of a reconstructed secondary vertex and its constituent tracks, a p-value can be assigned to the hypothesis that the secondary vertex originates from a material interaction. A validation of this procedure is presented using photon conversions to dimuons.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Dean, Cameron and Alexander, Dr Michael and Schiller, Dr Manuel and Eklund, Professor Lars
Authors: Alexander, M., Barter, W., Bay, A., Bel, L.J., van Beuzekom, M., Bogdanova, G., Borghi, S., Bowcock, T.J.V., Buchanan, E., Buytaert, J., Carvalho Akiba, K., Chen, S., Coco, V., Collins, P., Crocombe, A., Da Cunha Marinho, F., Dall'Occo, E., De Capua, S., Dean, C.T., Dettori, F., Dossett, D., Dreimanis, K., Dujany, G., Eklund, L., Evans, T., Ferro-Luzzi, M., Gersabeck, M., Gershon, T., Hadavizadeh, T., Harrison, J., Hennessy, K., Hulsbergen, W., Hutchcroft, D., Ilten, P., Jans, E., John, M., Kopciewicz, P., Koppenburg, P., Lafferty, G., Latham, T., Leflat, A., Majewski, M.W., McNulty, R., Mylroie-Smith, J., Oblakowska-Mucha, A., Parkes, C., Pearce, A., Poluektov, A., Pritchard, A., Qian, W., Redford, S., Richards, S., Rinnert, K., Rodrigues, E., Sarpis, G., Schiller, M., Schindler, H., Smith, M., Smith, N.A., Szumlak, T., Velthuis, J.J., Volkov, V., Wallace, C., Wark, H.M., Webber, A., Williams, M.R.J., and Williams, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Instrumentation
Publisher:Institute of Physics Publishing Ltd.
ISSN:1748-0221
ISSN (Online):1748-0221
Published Online:13 June 2018
Copyright Holders:Copyright © 2018 CERN
First Published:First published in Journal of Instrumentation 13(6): P06008
Publisher Policy:Reproduced under a Creative Commons License

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