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arXiv · 0712.4376

Study on $N\bar{N}$ $S$-wave Elastic Cross Section and Possible Bound States Within a Constituent Quark Model

Hourong Pang·Jialun Ping·Fan Wang
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Abstract

In the framework of a chiral constituent quark model, considering the contributions of $π$ annihilation and one-gluon annihilation, the proton-antiproton $S$-wave elastic scattering cross section experimental data can be reproduced by adjusting properly one-gluon annihilation coupling constant. Meanwhile, using the fixed model parameter, we do a dynamical calculation for all possible $S$-wave nucleon-antinucleon states, the results show that, there is no $S$-wave bound state as indicated by a strong enhancement at threshold of $p\bar{p}$ in $J/ψ$ and $B$ decays.

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Hourong Pang, Jialun Ping, Fan Wang. 2007-12-28. Study on $N\bar{N}$ $S$-wave Elastic Cross Section and Possible Bound States Within a Constituent Quark Model. https://doi.org/10.1088/0256-307x%2F25%2F9%2F027

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