Isospin Dependence of the ε' Meson Production in Nucleon-Nucleon Collisions,10.1063/1.2130156,J. Przerwa,H.-H. Adam,A. Budzanowski,R. Czyzykiewicz,D.

Isospin Dependence of the ε' Meson Production in Nucleon-Nucleon Collisions


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According to the quark model, the masses of ε and ε' mesons should be almost equal. However, the empirical values of these masses differ by more than a factor of two. Similarly, though they have almost the same quark-antiquark content, the total cross section for the creation of these mesons close to the kinematical thresholds in the pp --> ppX reaction differs significantly. Using the COSY-11 detection setup we intend to determine whether this difference will also be so significant in the case of the production of these mesons in the proton-neutron scattering. Additionally, the comparison of the pp --> ppε' and pn --> pnε' total cross sections will allow to learn about the production of the ε' meson in the channels of isospin I = 0 and I = 1 and to investigate aspects of the gluonium component of the ε' meson.

Published in 2005.

DOI: 10.1063/1.2130156

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Isospin Dependence of the ε' Meson Production in Nucleon-Nucleon Collisions,10.1063/1.2130156,J. Przerwa,H.-H. Adam,A. Budzanowski,R. Czyzykiewicz,D.