Interaction of π-Mesons with π-Mesons

Lifetime measurement of atoms consisting of π + and π − mesons

π-mesons as the quanta of non-Newtonian hadronic fluid

It occurs that when we attempt to melt the nucleon in order to obtain the free quark gas, or QGP fluid the mass of the heat quantum (heaton) is equal to the π−meson mass.

J / ψ absorption by π and ρ mesons in meson exchange model with anomalous parity interactions

We reanalyze the dissociation process of the J/ψ by π and ρ mesons into D + D̄, D + D̄, D + D̄, and D + D̄ within a meson exchange model. In addition to the dissociation mechanisms considered in the literature, we consider anomalous parity interactions, whose couplings are constrained by heavy quark spin symmetry and phenomenology. This opens new dissociation channels and adds new diagrams in the p...

A New Approach to the Calculation of Some properties of Vacuum and π, σ Mesons

It is shown in a systematic way that the instanton dilute liquid model can be combined with the global color symmetry model to form a new nonperturbative QCD model. Based on the quark propagator derived in the instanton dilute liquid approximation, the quark condensate 〈q̄q〉, the mixed quark gluon condensate gs〈q̄Gμνσq〉, the four quark condensate 〈q̄Γqq̄Γq〉 and tensor, pion vacuum susceptibilities ...

Elliptic flow of η and π Mesons in Heavy-Ion Collisions at 2 AGeV

Azimuthal distributions of η and π mesons emitted at midrapidity in collisions of 1.9 AGeV Ni+Ni and 2 AGeV Ca+Ca are studied as a function of the number of projectile-like spectator nucleons. The observed anisotropy corresponds to a negative elliptic flow signal for η mesons, indicating a preferred emission perpendicular to the reaction plane. In contrast, only small azimuthal anisotropies are...