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Wandering in Color-Space -- why the life of pentaquark is so long ? --

Yuu Maezawa·Toshiki Maruyama·Naoyuki Itagaki·Tetsuo Hatsuda
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Abstract

The problem of the long life time of the pentaquark $Θ^+$ is investigated on the basis of the color molecular dynamics simulation. We find that it takes a long time (typically of 50-100 fm/c) for the initial pentaquark-state to rearrange its color and spatial positions to decay into the nucleon + kaon final state. Structure of the potential surface in the color and position spaces also supports this picture. Pentaquark wanders on the potential surface to find a narrow channel to decay.

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Yuu Maezawa, Toshiki Maruyama, Naoyuki Itagaki, Tetsuo Hatsuda. 2005-02-15. Wandering in Color-Space -- why the life of pentaquark is so long ? --. https://arxiv.org/abs/hep-ph/0408056

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