$π^+π^-$ Emission from Coherent $ρ^0$ Propagation in Nuclei
$π^0$ photoproduction on the proton for photon energies from 0.675 to 2.875 GeV
$π^0$ to two-photon decay in lattice QCD
$π^0$-h correlation in Cu+Cu at $\sqrt{s_{NN}}$=200 GeV
$π^0$-Photoproduction on the deuteron via $Δ$-excitation using the Lorentz Integral Transform
$π^0\toγ^*γ$ transition form factor within Light Front Quark Model
$π^0γ$ invariant mass distribution in the low energy $γp \to ωp$ reaction
$π^o$ Electroproduction and Transversity
$π^{-}$ tagging in $Λ\to p π$ decay in homogeneous and inhomogeneous magnetic fields.
$π^{0}$ Azimuthal Anisotropy in Au+Au Collisions at $\sqrt{s_{NN}}=39-200$ GeV from PHENIX: Collision Energy and Path-Length Dependence of Jet-Quenching and the Role of Initial Geometry
$π_1$ of Hamiltonian $S^1$ manifolds
$π_1$ of symplectic automorphism groups and invertibles in quantum homology rings
$π_1$-classification of real arrangements with up to eight lines
$πΔΔ$ coupling constant
$πη$ pair hard electroproduction and exotic hybrid mesons
$πΛ$ phase shifts and CP Violation in ${Ξ\to πΛ}$ Deca
$πΛ$ scattering phase shifts and CP violation in $Ξ\to π Λ$ decay
$πΞ$ Correlations: an Interweaving of Resonance Interaction, Channel Coupling and Coulomb Effects
$πΞ$ phase shifts and CP Violation in ${Ω\toπΞ}$ Decay
$ππ$ Invariant mass spectrum in $V'\to V~ππ$ and the $f_0(600)$ pole