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Low-energy axial-vector transitions from decuplet to octet baryons
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
2019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 100, no 11, article id 114001Article in journal (Refereed) Published
Abstract [en]

Axial-vector transitions of decuplet to octet baryons are parametrized at low energies guided by a complete and minimal chiral Lagrangian up to next-to-leading order. It is pointed out that beyond the well-known leading-order term, there is only one contribution at next-to-leading order. This contribution is flavor symmetric. Therefore the corresponding low-energy constant can be determined in any strangeness sector. As functions of this low-energy constant, we calculate the decay widths and Dalitz distributions for the decays of decuplet baryons to octet baryons, pions, and photons and for the weak decay of the Omega baryon to a cascade baryon, an electron, and an antineutrino.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2019. Vol. 100, no 11, article id 114001
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-400420DOI: 10.1103/PhysRevD.100.114001ISI: 000499979100002OAI: oai:DiVA.org:uu-400420DiVA, id: diva2:1381402
Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2019-12-20Bibliographically approved

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Holmberg, MånsLeupold, Stefan
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