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- W1750376147 abstract "We determine constraints on the partial widths of mixed pentaquark multiplets in the framework of heavy baryon chiral perturbation theory (HB$chi$PT). The partial widths satisfy a GMO-type relation at leading order in HB$chi$PT, for arbitrary mixing. The widths of N(1440), N(1710), and $Theta(1540)$ are not consistent with ideal mixing, $theta_{N} = 35.3^{circ}$, but are consistent with $theta_{N} lesssim 25^{circ}$. Furthermore, there are parameter values in HB$chi$PT that produce such a mixing angle while allowing the identification of the mass spectrum above. As an alternative to non-ideal mixing, we also suggest reasons for giving up on N(1440) as a pure pentaquark state." @default.
- W1750376147 created "2016-06-24" @default.
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- W1750376147 date "2004-11-18" @default.
- W1750376147 modified "2023-09-27" @default.
- W1750376147 title "Constraints on widths of mixed pentaquark multiplets" @default.
- W1750376147 hasPublicationYear "2004" @default.
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