Abstract Pseudo Nambu-Goldstone bosons (pNGBs) are heart rate re attractive dark matter (DM) candidates, since they couple to the Standard Model (SM) predominantly through derivative interactions.Thereby they naturally evade the strong existing limits inferred from DM direct detection experiments.Working in an effective field theory that includes b
While Hermiticity lies at the heart of quantum mechanics, recent experimental advances in controlling dissipation have brought about unprecedented flexibility Animal Print Leather Belt Gift Box in engineering non-Hermitian Hamiltonians in open classical and quantum systems.Examples include parity-time-symmetric optical systems with gain and loss, d
Abstract We present a M BELTS new basis for the hadronic light-by-light (HLbL) tensor that is optimized for the evaluation of narrow-resonance contributions to HLbL scattering in the anomalous magnetic moment of the muon.As main advantage, kinematic singularities are manifestly absent for pseudoscalar, scalar, and axial-vector states, while the rem