Regular Article - Theoretical Physics
Singlet channel scattering in a composite Higgs model on the lattice
Centre for Mathematical Sciences, University of Plymouth, PL4 8AA, Plymouth, UK
2 School of Mathematics, Trinity College Dublin, Dublin 2, Ireland
3 IFIC (CSIC-UVEG), 46980, Paterna, Spain
4 CERN, Theoretical Physics Department, 1211, Geneva 23, Switzerland
Accepted: 6 December 2021
Published online: 19 January 2022
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 fundamental Dirac fermions and based on a finite-volume scattering formalism. The theory exhibits a 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.
© The Author(s) 2022
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3