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Testing the origin of the “ f1(1420) ” with the K¯ p→ Λ (Σ) KK¯ π reaction

AuthorsLiang, W.H.; Oset, Eulogi
Issue DateMay-2020
CitationEuropean Physical Journal C 80 (5): 407 (2020)
AbstractWe study the K¯ p→ YKK¯ π reactions with K¯ = K¯ , K and Y= Σ , Σ , Λ , in the region of KK¯ π invariant masses of 1200 - 1550 MeV. The strong coupling of the f(1285) resonance to KK¯ makes the mechanism based on K exchange very efficient to produce this resonance observed in the KK¯ π invariant mass distribution. In addition, in all these reactions one observes an associated peak at 1420 MeV which comes from the KK¯ decay mode of the f(1285) when the K is placed on shell at higher invariant masses. We call the attention to the possibility that the peaks observed in other reactions where the “f(1420) ” is observed have a similar origin.
Publisher version (URL)http://dx.doi.org/10.1140/epjc/s10052-020-7966-y
Identifiersdoi: 10.1140/epjc/s10052-020-7966-y
issn: 1434-6052
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