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Dimension-6 operator analysis of the CLIC sensitivity to new physics

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Version 2 2023-06-12, 08:56
Version 1 2023-06-09, 16:23
journal contribution
posted on 2023-06-12, 08:56 authored by John Ellis, Philipp Roloff, Veronica Sanz, Tevong You
We estimate the possible accuracies of measurements at the proposed CLICe+ e- collider of Higgs and W+W- production at centre-of-mass energies up to 3 TeV, incorporating also Higgsstrahlung projections at higher energies that had not been considered previously, and use them to explore the prospective CLIC sensitivities to decoupled new physics. We present the resulting constraints on the Wilson coefficients of dimension6 operators in a model-independent approach based on the Standard Model effective field theory (SM EFT). The higher centre-of-mass energy of CLIC, compared to other projects such as the ILC and CEPC, gives it greater sensitivity to the coefficients of some of the operators we study. We find that CLIC Higgs measurements may be sensitive to new physics scales ? = O(10) TeV for individual operators, reduced to O(1) TeV sensitivity for a global fit marginalising over the coefficients of all contributing operators. We give some examples of the corresponding prospective constraints on specific scenarios for physics beyond the SM, including stop quarks and the dilaton/radion.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1126-6708

Publisher

Springer Verlag

Issue

96

Volume

2017

Page range

1-22

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Theoretical Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2019-01-08

First Open Access (FOA) Date

2019-01-08

First Compliant Deposit (FCD) Date

2019-01-03

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    University of Sussex (Publications)

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