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Abstract

We present the first calculation of the scattering amplitude in the singlet channel beyond QCD. The calculation is performed in SU(2) gauge theory with $$N_f=2$$fundamental Dirac fermions and based on a finite-volume scattering formalism. The theory exhibits a $$SU(4) \rightarrow Sp(4)$$chiral symmetry breaking pattern that is used to design minimal composite Higgs models currently tested at the LHC. Our results show that, for the range of underlying fermion mass considered, the lowest flavour singlet state is stable.

Publication Date

2022-01-19

Publication Title

The European Physical Journal C - Particles and Fields

Volume

82

Issue

1

ISSN

1434-6044

Acceptance Date

2021-12-06

Deposit Date

2026-07-06

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

First Page

47

Last Page

47

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