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27 April 2024 |
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Article overview
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Pentaquarks and resonances in the $pJ/psi$ spectrum | | V.V. Anisovich
; M.A. Matveev
; J. Nyiri
; A.V. Sarantsev
; A.N. Semenova
; | | Date: |
28 Jul 2015 | | Abstract: | We consider exotic baryons with hidden charm as antiquark-diquark-diquark
composite systems. Spin and isospin structure of such exotic states is given
and masses are estimated. The data for production of pentaquarks in the
reaction $Lambda_b o K^-p J/psi$ are discussed. We suggest that the narrow
peak in $pJ/psi$ spectra at 4450 MeV is antiquark-diquark-diquark state with
negative parity, $5/2^{-}(4450)$, while the broad bump $3/2^{+}(4380)$ is the
result of rescatterings in the ($pJ/psi$)-channel. Positions of other
pentaquarks with negative parity are estimated. | | Source: | arXiv, 1507.7652 | | Services: | Forum | Review | PDF | Favorites | |
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