Abstract
The Compact Linear Collider (CLIC) is an option for a future e +e - collider operating at centre-of-mass energies up to 3TeV, providing sensitivity to a wide range of new physics phenomena and precision physics measurements at the energy frontier. This paper is the first comprehensive presentation of the Higgs physics reach of CLIC operating at three energy stages: s=350GeV, 1.4 and 3TeV. The initial stage of operation allows the study of Higgs boson production in Higgsstrahlung (e +e -→ Z H) and W W -fusion (e+e-→Hνeν¯e), resulting in precise measurements of the production cross sections, the Higgs total decay width ΓH, and model-independent determinations of the Higgs couplings. Operation at s>1TeV provides high-statistics samples of Higgs bosons produced through W W -fusion, enabling tight constraints on the Higgs boson couplings. Studies of the rarer processes e +e -→ t t ¯ H and e+e-→HHνeν¯e allow measurements of the top Yukawa coupling and the Higgs boson self-coupling. This paper presents detailed studies of the precision achievable with Higgs measurements at CLIC and describes the interpretation of these measurements in a global fit.
Original language | English |
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Article number | 475 |
Journal | European Physical Journal C |
Volume | 77 |
Issue number | 7 |
DOIs | |
State | Published - Jul 1 2017 |
Externally published | Yes |
Funding
This work benefited from services provided by the ILC Virtual Organisation, supported by the national resource providers of the EGI Federation. This research was done using resources provided by the Open Science Grid, which is supported by the National Science Foundation and the U.S. Department of Energy’s Office of Science. The authors would like to acknowledge the use of the Oxford Particle Physics Computing Cluster. This work was supported by the Comisión Nacional de Investigación Científica y Tecnológica (CONICYT), Chile; the Ministry of Education, Youth and Sports, Czech Republic, under Grant INGO II-LG 14033; the DFG cluster of excellence “Origin and Structure of the Universe”, Germany; the EC HIGGSTOOLS Project, under Contract PITN-GA-2012-316704; the European Union’s Horizon 2020 Research and Innovation programme under Grant Agreement No. 654168; the German - Israel Foundation (GIF); the Israel Science Foundation (ISF); the I-CORE programme of VATAT, ISF and the Israel Academy of Sciences, Israel; the Research Council of Norway; the Ministry of Education, Science and Technological Development of the Republic of Serbia through the National Project OI171012; the Polish Ministry of Science and Higher Education under Contract No. 3501/H2020/2016/2; the National Science Centre, Poland, HARMONIA Project, under Contracts 2013/10/M/ST2/00629 and UMO-2015/18/M/ST2/00518; the Romanian agencies UEFISCDI and ROSA; the Secretary of State of Research, Development and Innovation of Spain, under Project FPA2011-15330-E, FPA2015-71956-REDT; the Gates Foundation, United Kingdom; the UK Science and Technology Facilities Council (STFC), United Kingdom; and the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences and Office of High Energy Physics under Contract DE-AC02-06CH11357.