ALPs effective field theory and collider signatures

Brivio, I, Gavela, M B, Merlo, L, Mimasu, K, No, J M, del Rey, R and Sanz, V (2017) ALPs effective field theory and collider signatures. The European Physical Journal C: Particles and Fields, 77 (572). pp. 1-40. ISSN 1434-6044

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We study the leading effective interactions between the Standard Model fields and a generic singlet CP-odd (pseudo-) Goldstone boson. Two possible frameworks for electroweak symmetry breaking are considered: linear and non-linear. For the latter case, the basis of leading effective operators is determined and compared with that for the linear expansion. Associated phenomenological signals at colliders are explored for both scenarios, deriving new bounds and analyzing future prospects, including LHC and High Luminosity LHC sensitivities. Mono-Z, mono-W, W-photon plus missing energy and on-shell top final states are most promising signals expected in both frameworks. In addition, non-standard Higgs decays and mono-Higgs signatures are especially prominent and expected to be dominant in non-linear realisations.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Theoretical Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Alice Jackson
Date Deposited: 08 Jan 2019 08:56
Last Modified: 02 Jul 2019 13:30

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