Historical Survey of the Quasi-nuclear Baryonium * †
نویسنده
چکیده
We review ideas and speculations concerning possible bound states or resonances of the nucleon–antinucleon system.
منابع مشابه
Quasi-nuclear and quark model baryonium: historical survey
In the 70’s, there has been many indications of new mesons coupled to the nucleon–antinucleon (NN) system. States below the NN threshold were claimed, e.g., in radiative transitions NN → X + γ. Above the threshold, states were tentatively seen as bumps in cross sections. Clarifying the experimental situation was one of the main motivation for building the lowenergy part of the antiproton beam f...
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In this article, we take the point of view that the X(1835) be a baryonium state and calculate its mass within the framework of the QCD sum rules approach. The numerical value of the mass of the X(1835) is consistent with the experimental data. There may be some baryonium component in the X(1835) state. PACS number: 12.38.Aw, 12.38.Qk
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