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A Green's basis for the bosonic SMEFT to dimension 8
Mikael Chala, Álvaro Díaz-Carmona, Guilherme Guedes
We present a basis of dimension-eight Green's functions involving Standard Model (SM) bosonic fields, consisting of 86 new operators. Rather than using algebraic identities and int…
Positivity bounds in the Standard Model effective field theory beyond tree level
Mikael Chala, Jose Santiago
Focusing on four-Higgs interactions, we analyse the robustness of tree-level-derived positivity bounds on Standard Model effective field theory (SMEFT) operators under quantum corr…
Search for Higgs boson decays into a pair of pseudoscalar particles in the final state with the ATLAS detector in collisions at TeV
ATLAS Collaboration
This paper presents a search for decays of the Higgs boson with a mass of 125 GeV into a pair of new pseudoscalar particles, , where one -boson decays into a $b…
Measurements of sensor radiation damage in the ATLAS inner detector using leakage currents
ATLAS Collaboration
Non-ionizing energy loss causes bulk damage to the silicon sensors of the ATLAS pixel and strip detectors. This damage has important implications for data-taking operations, charge…
Towards the renormalisation of the Standard Model effective field theory to dimension eight: Bosonic interactions I
Mikael Chala, Guilherme Guedes, Maria Ramos +1
We compute the one-loop renormalisation group running of the bosonic Standard Model effective operators to order , with GeV being the electroweak scale and …
Neutrino masses in the Standard Model effective field theory
Mikael Chala, Arsenii Titov
We compute the leading-logarithmic correction to the neutrino mass matrix in the Standard Model effective field theory (SMEFT) to dimension seven. In the limit of negligible lepton…