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    Constraining Higgs boson effective couplings at electron-positron colliders

    Khanpour, Hamzeh and Najafabadi, Mojtaba Mohammadi (2017) Constraining Higgs boson effective couplings at electron-positron colliders. Physical Review D, 95 (055026). ISSN 2470-0029

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    We probe the dimension-six operators contributing to Higgs production in association with a Z boson at the future high-luminosity electron-positron colliders. Potential constraints on dimension-six operators in the Higgs sector are determined by performing a shape analysis on the differential angular distribution of the Higgs and Z boson decay products. The analysis is performed at the center-of-mass energies of 350 and 500 GeV including a realistic detector simulation and the main sources of background processes. The 68% and 95% confidence level upper limits are obtained on the contributing anomalous couplings considering only the decay of the Higgs boson into a pair of b-quarks and leptonic Z boson decay. Our results show that angular observables provide a great sensitivity to anomalous couplings, in particular, at the high-luminosity regime.

    Item Type: Article
    Additional Information: Cite as: Constraining Higgs boson effective couplings at electron-positron colliders, Hamzeh Khanpour, Mojtaba Mohammadi Najafabadi, DOI: 10.1103/PhysRevD.95.055026, Phys.Rev.D 95 (2017) 5, 055026
    Keywords: Higgs boson effective couplings; electron-positron colliders;
    Academic Unit: Faculty of Science and Engineering > Theoretical Physics
    Item ID: 14764
    Identification Number:
    Depositing User: Hamzeh Khanpour
    Date Deposited: 08 Sep 2021 13:46
    Journal or Publication Title: Physical Review D
    Publisher: American Physical Society
    Refereed: No
    Funders: School of Particles and Accelerators, Institute for Research in Fundamental Sciences (IPM), University of Science and Technology of Mazandaran
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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