Corrigendum to “Isoscalar single-pion production in the region of Roper and d(2380) resonances” [Phys. Lett. B 774 (2017) 599] (Physics Letters B (2017) 774 (599–607), (S0370269317308274), (10.1016/j.physletb.2017.10.015))

The WASA-at-COSY Collaboration

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Abstract

In a reinvestigation of the nucleon-nucleon initiated isoscalar single-pion production we noted that the upper limits for the decay of the dibaryon resonance [Formula presented]into the isoscalar [Formula presented]channel via the routes [Formula presented]and [Formula presented]are a factor of two smaller than given in Ref. [1]. The reason is that the isoscalar single-pion production cross section [Formula presented]derived in Ref. [1] by the relation [1–3]: [Formula presented] is twice the isoscalar part of the pn-induced single-pion production cross section [Formula presented] i.e. [3]: [Formula presented] In Ref. [1] the quantity [Formula presented]has been plotted in Fig. 7. Based on this figure the upper limits for the hypothetical [Formula presented]decays were determined. However, the relevant cross section for the routes [Formula presented]and [Formula presented]is not [Formula presented] but [Formula presented] Hence the upper limits for these routes are a factor of two smaller than given in Ref. [1] leading thus to upper limits (90% C.L.) of 5% and 7%, respectively, for the branching ratios of the respective decays of [Formula presented] This result excludes [Formula presented]as major intermediate decay configuration and restricts a possible [Formula presented]configuration to less than 25% [4].

Original languageEnglish
Article number135555
Number of pages2
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume806
DOIs
Publication statusPublished - 10 Jul 2020

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