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Article Dans Une Revue Journal of High Energy Physics Année : 2024

The three-pion $K$-matrix at NLO in ChPT

Jorge Baeza-Ballesteros
  • Fonction : Auteur
Johan Bijnens
  • Fonction : Auteur
Tomáš Husek
  • Fonction : Auteur
Fernando Romero-López
  • Fonction : Auteur
Stephen R Sharpe
  • Fonction : Auteur

Résumé

The three-particle $K$-matrix, $\mathcal{K}_{\mathrm{df},3}$, 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.

Dates et versions

hal-04455533 , version 1 (13-02-2024)

Identifiants

Citer

Jorge Baeza-Ballesteros, Johan Bijnens, Tomáš Husek, Fernando Romero-López, Stephen R Sharpe, et al.. The three-pion $K$-matrix at NLO in ChPT. Journal of High Energy Physics, 2024, 03, pp.048. ⟨10.1007/JHEP03(2024)048⟩. ⟨hal-04455533⟩
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