New Excitation Mode of the Nucleon?

Details New Excitation Mode of the Nucleon? New Excitation Mode of the Nucleon?

1998-04-28

arxiv.org/abs/nucl-th/9804069v2

Physics

Nuclear Physics

Nuclear Theory

3 pages, including 3 Postscript figures

Scientific paper

We consider properties of narrow baryon states observed recently in reaction $pp\to p\pi^+X$. Two lowest of them (with mass 1004 and 1044 MeV, respectively) are stable against strog decay. Moreover we conclude that they cannot decay to $\gamma N$ and thus this states are a kind of metastable levels in quark system. The simplest decay channel is assumed to be $2\gamma N$ and possible quark configuration with such properties is discussed. New experiment for verification of status of this states in $\gamma N$ collision is proposed.

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