Understanding Large Localized C P Violation in B ± → K ± π + π − Using Dispersive Methods

Le résumé fourni par la source

We utilize the universality of pion-pion (𝜋⁢𝜋) final-state interactions at small invariant masses to understand the enhanced localized 𝐶⁢𝑃 violation in 𝐵± →𝐾±⁢𝜋+⁢𝜋− , using a dispersive approach. From a fit to the integrated 𝐶⁢𝑃 -asymmetry data, we successfully predict the Dalitz-plot Kinematic distribution of the asymmetry in the low-energy 𝜋⁢𝜋 region, including the large localized 𝐶⁢𝑃 violation recently observed by LHCb. An essential role is played by the contributions of isospin 2. This formalism, whose parameters have a physical meaning, can be adapted straightforwardly to other systems with 𝐶⁢𝑃 violation enhanced by final-state interactions

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.