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- Title
The three-pion K-matrix at NLO in ChPT.
- Authors
Baeza-Ballesteros, Jorge; Bijnens, Johan; Husek, Tomáš; Romero-López, Fernando; Sharpe, Stephen R.; Sjö, Mattias
- Abstract
The three-particle K-matrix, K df,3, is a scheme-dependent quantity that parametrizes short-range three-particle interactions in the relativistic-field-theory three-particle finite-volume formalism. In this work, we compute its value for systems of three pions in all isospin channels through next-to-leading order in Chiral Perturbation Theory, generalizing previous work done at maximum isospin. We obtain analytic expressions through quadratic order (or cubic order, in the case of zero isospin) in the expansion about the three-pion threshold.
- Subjects
CHIRAL perturbation theory; ISOBARIC spin; ELECTROWEAK interactions
- Publication
Journal of High Energy Physics, 2024, Vol 2024, Issue 3, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP03(2024)048