PHOKHARA 7.0 Monte Carlo generator: the narrow resonances implementation and new pion and kaon form factors☆
Review articleOpen access

Experiments at high luminosity electron-positron colliders allow to study the kaon and the pion form factors in the time-like region up to high energies. Also the kaon and pion pair production at and around the narrow resonances J/ψ and ψ(2S) can be investigated, with the interference between electromagnetic and hadronic amplitudes as one of the most interesting phenomenas. Parameterisations of charged and neutral kaon as well as pion form factors, which lead to an improved description of the data in the region of large invariant masses of the meson pair, are presented. They are implemented into the Monte Carlo generator PHOKHARA, together with the hadronic couplings of charged and neutral kaons to J/ψ and ψ(2S). The physics case as well as details of the implementation are discussed.

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