Top-quark physics at the CLIC electron-positron linear collider

Author(s)
, H. Abramowicz, N. Alipour Tehrani, D. Arominski, Y. Benhammou, M. Benoit, J. -J. Blaising, M. Boronat, O. Borysov, R. R. Bosley, I. Bozovic Jelisavcic, I. Boyko, S. Brass, E. Brondolin, P. Bruckman de Renstrom, M. Buckland, P. N. Burrows, M. Chefdeville, S. Chekanov, T. Coates, D. Dannheim, M. Demarteau, H. Denizli, G. Durieux, G. Eigen, K. Elsener, E. Fullana, J. Fuster, M. Gabriel, F. Gaede, I. Garcia, J. Goldstein, P. Gomis Lopez, C. Graf, S. Green, C. Grefe, A. Hoang, A. A. Maier, V. Martin, K. Nowak, A. Sailer, F. Simon, M. Szalay, M. A. Thomson, M. A. Weber, A. Widl, M. Williams, A. G. Winter, C. Zhang, J. Zhang, Y. Zhang
Abstract

The Compact Linear Collider (CLIC) is a proposed future high-luminosity linear electron-positron collider operating at three energy stages, with nominal centre-of-mass energies: 380 GeV, 1.5 TeV, and 3 TeV. Its aim is to explore the energy frontier, providing sensitivity to physics beyond the Standard Model (BSM) and precision measurements of Standard Model processes with an emphasis on Higgs boson and top-quark physics. The opportunities for top-quark physics at CLIC are discussed in this paper. The initial stage of operation focuses on top-quark pair production measurements, as well as the search for rare flavour-changing neutral current (FCNC) top-quark decays. It also includes a top-quark pair production threshold scan around 350 GeV which provides a precise measurement of the top-quark mass in a well-defined theoretical framework. At the higher-energy stages, studies are made of top-quark pairs produced in association with other particles. A study of ttH production including the extraction of the top Yukawa coupling is presented as well as a study of vector boson fusion (VBF) production, which gives direct access to high-energy electroweak interactions. Operation above 1 TeV leads to more highly collimated jet environments where dedicated methods are used to analyse the jet constituents. These techniques enable studies of the top-quark pair production, and hence the sensitivity to BSM physics, to be extended to higher energies. This paper also includes phenomenological interpretations that may be performed using the results from the extensive top-quark physics programme at CLIC.

Organisation(s)
Particle Physics, Department of Geography and Regional Research
External organisation(s)
Tel Aviv University, European Organization for Nuclear Research (CERN), Warsaw University of Technology, Universität Zürich (UZH), Webster University Geneva, Laboratoire d'Annecy-le-vieux de Physique de Particules, Instituto Pirenaico de Ecología (CSIC), Instituto de Física Corpuscular (IFIC), Univ Int Valencia VIU, Valencia International University, Birmingham City University, University of Belgrade, Joint Institute for Nuclear Research, Universität Siegen, American Ethnicity and Ethnic Community Building, Polish Academy of Arts and Sciences, Polish Academy of Sciences (PAS), Liverpool Hope University, Oxford University Museum of Natural History, Argonne National Laboratory, University of Sussex, Abant Izzet Baysal University, Helmholtz-Zentrum Berlin für Materialien und Energie, Deutsches Elektronen-Synchrotron DESY, University of Bergen (UiB), Max-Planck-Gesellschaft, Univ Bristol, University of Bristol, Sch Psychol Sci, Rheinische Friedrich-Wilhelms-Universität Bonn, University of Edinburgh, Glasgow Caledonian University, Chinese Academy of Sciences (CAS), University of Warsaw, University of Cambridge, Katholieke Univ Leuven, League of European Research Universities - LERU, KU Leuven, Dept Cellular & Mol Med, Cell Death Res & Therapy Unit, Ames Lab, United States Department of Energy (DOE), Ames National Laboratory, Div Mat Sci & Engn, Cambridge University Press
Journal
Journal of High Energy Physics
Volume
2019
No. of pages
88
ISSN
1029-8479
DOI
https://doi.org/10.1007/JHEP11(2019)003
Publication date
07-2018
Peer reviewed
Yes
Austrian Fields of Science 2012
103012 High energy physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/topquark-physics-at-the-clic-electronpositron-linear-collider(7f8fa593-360e-47c1-89cd-014a9c02665f).html