Production of N*(1535) and N*(1650) in ΛcK¯0ηp(πN) decay

R. Pavao, S. Sakai, and E. Oset
Phys. Rev. C 98, 015201 – Published 2 July 2018

Abstract

To study the properties of the N*(1535) and N*(1650), we calculate the mass distributions of MB in the ΛcK¯0MB decay, with MB=πN(I=1/2),ηp, and KΣ(I=1/2). We do this by calculating the tree-level and loop contributions, mixing pseudoscalar-baryon and vector-baryon channels using the local hidden gauge formalism. The loop contributions for each channel are calculated using the chiral unitary approach. We observe that for the ηN mass distribution only the N*(1535) is seen, with the N*(1650) contributing to the width of the curve, but for the πN mass distribution both resonances are clearly visible. In the case of MB=KΣ, we found that the strength of the KΣ mass distribution is smaller than that of the mass distributions of the πN and ηp in the Λc+K¯0πN and Λc+K¯0ηp processes, in spite of this channel having a large coupling to the N*(1650). This is because the KΣ pair production is suppressed in the primary production from the Λc decay.

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  • Received 5 March 2018
  • Revised 2 May 2018

DOI:https://doi.org/10.1103/PhysRevC.98.015201

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

R. Pavao*, S. Sakai, and E. Oset

  • Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, Aptdo.22085, 46071 Valencia, Spain

  • *rpavao@ific.uv.es

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Vol. 98, Iss. 1 — July 2018

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