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Title: Next-to-leading order effective field theory ΛN → NN potential in coordinate space
Author: Pérez-Obiol Castañeda, Axel
Entem, D. R.
Juliá-Díaz, Bruno
Parreño García, Assumpta
Keywords: Teoria de camps (Física)
Field theory (Physics)
Issue Date: 29-Apr-2016
Publisher: Elsevier B.V.
Abstract: The potential in coordinate space for the ΛN→NNΛN→NN weak transition, which drives the weak decay of most hypernuclei, is derived within the effective field theory formalism up to next-to-leading order. This coordinate space potential allows us to discuss how the different contributions to the potential add up at the different scales. Explicit expressions are given for each two-pion-exchange diagram contributing to the interaction. The potential is also reorganized into spin and isospin operators, and the coefficient for each operator is given in analytical form and represented in coordinate space. The relevance of explicitly including the mass differences among the baryons appearing in the two-pion-exchange diagrams is also discussed in detail.
Note: Versió postprint del document publicat a:
It is part of: Nuclear Physics A, 2016, vol. 954, p. 213-241
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ISSN: 0375-9474
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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