$π$-formulas with free parameters

$π$-junction and spontaneous current state in a superfluid Fermi gas

$π$-junction qubit in monolayer graphene

$π$-kinks in strongly ac driven sine-Gordon systems

$π$NN coupling and two-pion photoproduction on the nucleon

$π, K, p$ and $\bar{p}$ production from Au+Au collisions at $\sqrt{s_{_{NN}}} = 62.4$ GeV

$π- π$ Scattering Lengths and Chiral Condensate in NJL Model

$π-$shifted magnetoconductance oscillations in mesoscopic superconducting-normal-heterostructures

$π-0$ Transition in Superconductor-Ferromagnetic-Superconductor Junctions

$π-N$ from an Extended Effective Field Theory

$π/K/p$ production and Cronin effect from p+p, d+Au and Au+Au collisions at $\sqrt{s_{NN}}= 200$ GeV from the PHENIX experiment

$πB_{8}B_{8}$ and $σB_{8}B_{8}$ couplings from a chiral quark potential model

$πK$ Scattering in Three Flavour ChPT

$πK$ sum rules and the SU(3) chiral expansion

$πN σ$ Term , $\bar{s}s$ in Nucleon, and Scalar Form Factor --- a Lattice Study

$πN σ$ Term and Quark Spin Content of the Nucleon

$πN$ and $ππN$ Couplings of the $Δ(1232)$ and its Chiral Partners

$πN$ Scattering in the $Δ(1232)$ Region in an Effective Field Theory

$πNN$ and $πNΔ$ formfactors determined from a microscopic model for $πN$ scattering

$πNN$ and Pseudoscalar Form Factors from Lattice QCD