Rho meson

Rho meson ( ρ , ρ0, ρ )

ρ mesons ( rho mesons ) are mesons with the same quark content as pions, but with spin one. They can therefore be regarded as angular momentum excitations of the corresponding pions and vector mesons are.

Description

Just like the pions form the ρ - meson one isospin triplet. This means that there are three different states of the ρ - mesons: neutral ρ0, which is a superposition of states, and may dd

And the charged ρ

And ρ -

ρ mesons decay to almost 100 % under the strong force into two pions. Thus they have a very short lifetime or a very large decay width.

ρ mesons could be detected in experiments for the first time in 1961.

Special

ρ mesons are the lightest particles decaying under the strong interaction. This makes them interesting in the current research, especially from the theoretical side, since the dynamics of the strong interaction can study at their example. In recent years (as of 2011 ) were simulated, for example, in the context of lattice QCD calculations scattering processes of two pions. This allowed mass and decay width of the resonance are extracted.