Heavy hadron chiral perturbation theory predicts giant electric polarizabilities for D star mesons from near-degenerate pion thresholds and flavor-dependent values for doubly heavy baryons.
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Lattice QCD evaluation of π⁻→π⁺ee matrix elements at physical pion mass with a new around-the-world subtraction technique and RI/SMOM renormalization that reduces uncertainties and cross-checks prior results.
Conventional BBN fitting for negative Delta N_eff is unphysical; a consistent treatment via entropy dilution after neutrino decoupling yields significantly different bounds.
A quark-meson model with lattice-fitted temperature-dependent quark masses and anomalous magnetic moments reproduces the magnetic susceptibility of hot hadronic matter up to the QCD crossover, showing quarks are active below 120 MeV.
Anomalous magnetic moment of Dirac fermions enhances fermionic Casimir energy under magnetic fields via gapless lowest Landau level behavior.
BBN observations of light nuclei abundances constrain cosmological models with Weylian boundaries via modified Friedmann equations, numerical thermonuclear rate calculations, and MCMC analysis.
Within the Bethe-Salpeter framework the authors find bound-state solutions for D anti-D pairs under all three coupling sets examined and for Ds anti-Ds pairs only in a restricted region, yielding predicted B+ branching fractions of 1.09e-5 to 2.006e-3 and 1.56e-6 to 4.14e-4 respectively.
The paper computes spectroscopic properties, OZI-allowed strong decays, and radiative transitions for the 2D and 1F charmonium states around 4 GeV to guide experimental searches.