Molecule model for deeply bound and broad kaonic nuclear clusters

Details Molecule model for deeply bound and broad kaonic nuclear clusters Molecule model for deeply bound and broad kaonic nuclear clusters

2011-02-21

arxiv.org/abs/1102.4163v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures

Scientific paper

A molecule model is proposed for the description of the properties of the kaonic nuclear cluster (KNC) anti-KNN with the structure N(ant-KN)_(I = 0) and quantum numbers I(J^P) = 1/2(0^-), the large binding energy B^(\exp)_(anti-KNN) = 103(6) MeV and the width Gamma^(\exp)_(anti-KNN) = 118(13) MeV, observed recently by the DISTO Collaboration. The theoretical values of the binding energy B^(th)_(anti-KNN) = 118 MeV, the width Gamma^(th)_(anti-KNN) = 142 MeV of the KNC anti-KNN and the density n_(anti-KNN) = 2.71 n_0, where n_0= 0.17 fm^(-3) is the normal nuclear density, reproduce well the large experimental values. They are calculated with the trial harmonic oscillator wave functions by using chiral Lagrangians, accounting for all self-energy terms, contributing to the masses of the kaonic nuclear clusters (anti-KN)_(I = 0) and anti-KNN. In addition the high Lambda*p sticking probability in the pp reaction at the kinetic energy T_p = 2.85 GeV of the incident proton is explained.

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