From the 1 of 7 linked papers with an AI index.
7 papers
The Too Visible QCD Axion
Luca Di Luzio, Michele Redi, Alessandro Strumia +2
The paper examines a GeV‑scale QCD axion model where the up‑quark mass arises from the QCD chiral condensate, identifies a structural problem that breaks isospin symmetry and disto…
Baryogenesis from cosmological CP breaking
Mateusz Duch, Alessandro Strumia, Arsenii Titov
We show that baryogenesis can arise from the cosmological evolution of a scalar field that governs CP-violating parameters, such as the Yukawa couplings and the theta terms of the…
Solving the strong CP problem in string-inspired theories with modular invariance
Ferruccio Feruglio, Antonio Marrone, Alessandro Strumia +1
We show that solutions to the strong CP problem based on modular invariance can be extended to incorporate features that appear in string compactifications: quarks with mostly posi…
Heavy neutral leptons and top quarks in effective field theory
Rebeca Beltrán, Giovanna Cottin, Julian Günther +3
We study the phenomenology of heavy neutral leptons (HNLs) at the LHC in effective field theory, concentrating on operators with top quarks. Depending on the operator choice…
New physics in spin entanglement
Mateusz Duch, Alessandro Strumia, Arsenii Titov
We propose a theory that preserves spin-summed scattering and decay rates at tree level while affecting particle spins. This is achieved by breaking the Lorentz group in a non-loca…
Solving the strong CP problem without axions
Ferruccio Feruglio, Matteo Parriciatu, Alessandro Strumia +1
We formulate general conditions under which the strong CP problem is solved by spontaneous CP violation. Quark-mass matrix elements are polynomials in the CP-breaking order paramet…