Mapping the material in the LHCb vertex locator using secondary hadronic interactions
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 -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.
Cite
@article{arxiv.1803.07466,
title = {Mapping the material in the LHCb vertex locator using secondary hadronic interactions},
author = {M. Alexander and W. Barter and A. Bay and L. J. Bel and M. van Beuzekom and G. Bogdanova and S. Borghi and T. J. V. Bowcock and E. Buchanan and J. Buytaert and K. Carvalho Akiba and S. Chen and V. Coco and P. Collins and A. Crocombe and F. Da Cunha Marinho and E. Dall'Occo and S. De Capua and C. T. Dean and F. Dettori and D. Dossett and K. Dreimanis and G. Dujany and L. Eklund and T. Evans and M. Ferro-Luzzi and M. Gersabeck and T. Gershon and T. Hadavizadeh and J. Harrison and K. Hennessy and W. Hulsbergen and D. Hutchcroft and P. Ilten E. Jans and M. John and P. Kopciewicz and P. Koppenburg and G. Lafferty and T. Latham and A. Leflat and M. W. Majewski and R. McNulty and J. Mylroie-Smith and A. Oblakowska-Mucha and C. Parkes and A. Pearce and A. Poluektov and A. Pritchard and W. Qian and S. Redford and S. Richards and K. Rinnert and E. Rodrigues and G. Sarpis and M. Schiller and H. Schindler and M. Smith and N. A. Smith and T. Szumlak and J. J. Velthuis and V. Volkov and C. Wallace and H. M. Wark and A. Webber and M. R. J. Williams and M. Williams},
journal= {arXiv preprint arXiv:1803.07466},
year = {2018}
}
Comments
All figures and tables are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-DP-2018-002.html