Higgs physics at the CLIC electron–positron linear collider
- Tel Aviv University, Tel Aviv (Israel), Raymond and Beverly Sackler School of Physics and Astronomy
- Pontificia Universidad Católica de Chile, Santiago (Chile)
- Belarusian State University, Minsk (Belarus), National Scientific and Educational Centre of Particle and High Energy Physics
- CERN, Geneva (Switzerland)
- Monash University, Melbourne (Australia)
- Université de Genève, Geneva (Switzerland), Département de Physique Nucléaire et Corpusculaire (DPNC)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Laboratoire d’Annecy-le-Vieux de Physique des Particules, Annecy-le-Vieux (France)
- Univ. of Melbourne (Australia)
- CSIC-University of Valencia (Spain), IFIC
The Compact Linear Collider (CLIC) is an option for a future \({\mathrm{e}^{+}}{\mathrm{e}^{-}} \) collider operating at centre-of-mass energies up to \(3\,\text {TeV} \), 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: \(\sqrt{s} = 350\,\text {GeV} \), 1.4 and \(3\,\text {TeV} \). The initial stage of operation allows the study of Higgs boson production in Higgsstrahlung (\({\mathrm{e}^{+}}{\mathrm{e}^{-}} \rightarrow {\mathrm{Z}} {\mathrm{H}} \)) and \({\mathrm{W}} {\mathrm{W}} \)-fusion (\({\mathrm{e}^{+}}{\mathrm{e}^{-}} \rightarrow {\mathrm{H}} {{\nu }}_{\!\mathrm{e}} {\bar{{\nu }}}_{\!\mathrm{e}} \)), resulting in precise measurements of the production cross sections, the Higgs total decay width \(\varGamma _{{\mathrm{H}}}\), and model-independent determinations of the Higgs couplings. Operation at \(\sqrt{s} > 1\,\text {TeV} \) provides high-statistics samples of Higgs bosons produced through \({\mathrm{W}} {\mathrm{W}} \)-fusion, enabling tight constraints on the Higgs boson couplings. Studies of the rarer processes \({\mathrm{e}^{+}}{\mathrm{e}^{-}} \rightarrow \mathrm{t} {\bar{\mathrm{t}}} {\mathrm{H}} \) and \({\mathrm{e}^{+}}{\mathrm{e}^{-}} \rightarrow {\mathrm{H}} {\mathrm{H}} {{\nu }}_{\!\mathrm{e}} {\bar{{\nu }}}_{\!\mathrm{e}} \) 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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
- Contributing Organization:
- CLIC Collaboration
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1626192
- Journal Information:
- European Physical Journal. C, Particles and Fields, Vol. 77, Issue 7; ISSN 1434-6044
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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