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New insights into four-boson renormalization group limit cycles
Using machine learning techniques, we verify that the emergence of renormalization group limit cycles beyond the unitary limit is transferred from the three-boson subsystems to the whole four-boson system.
Three-body renormalization group limit cycles based on unsupervised feature learning
Both the three-body system and the inverse square potential carry a special significance in the study of renormalization group limit cycles.
Improved $K_{e3}$ radiative corrections sharpen the $K_{μ 2}$--$K_{l3}$ discrepancy
The measurements of $V_{us}$ in leptonic $(K_{\mu 2})$ and semileptonic $(K_{l3})$ kaon decays exhibit a $3\sigma$ disagreement, which could originate either from physics beyond the Standard Model or some large unidentified Standard Model systematic effects.
High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Experiment Nuclear Theory
The $Λ(1405)$ in resummed chiral effective field theory
We study the unitarized meson-baryon scattering amplitude at leading order in the strangeness $S=-1$ sector using time-ordered perturbation theory for a manifestly Lorentz-invariant formulation of chiral effective field theory.
High Energy Physics - Phenomenology Nuclear Theory
Where is the lightest charmed scalar meson?
The lightest charmed scalar meson is known as the $D_0^*(2300)$, which is one of the earliest new hadron resonances observed at modern $B$ factories.
High Energy Physics - Phenomenology High Energy Physics - Experiment
A Neural Network Perturbation Theory Based on the Born Series
Restricting our analysis to multilayer perceptrons (MLPs) and introducing quantities we refer to as propagators and vertices, both depending on the MLP's weights and biases, we establish a graph-theoretical approach.
