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arXiv · 1310.8228

Search for narrow six-quark states in the reactions $γd\to πγnn$

L. V. Fil'kov·V. L. Kashevarov·M. Ostrick
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Abstract

We study the reactions $γd\toπγNN$ with the aim to search for six-quark states, the decay of which into two nucleons is forbidden by the Pauli exclusion principle. These states with the masses $M<2m_N+m_π$ should mainly decay by emitting a photon. This is a new class of metastable six-quark states with the decay widths $<< 1$keV. The recent experiment at Proton Linear Accelerator of INR (Moscow) suggests a possibility of the existence of such states with masses 1904, 1926, and 1942 MeV. The proposed experiment at MAMI-C could provide an unique opportunity to observe such dibaryon states in mass region up to 2000 MeV and determine their masses and quantum numbers.

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L. V. Fil'kov, V. L. Kashevarov, M. Ostrick. 2013-10-30. Search for narrow six-quark states in the reactions $γd\to πγnn$. https://arxiv.org/abs/1310.8228

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