Agradecimentos: This work was financed in part by the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Brazil, and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil. This work was part of the project Instituto Nacional de Ciência e Tecnologia—Nuclear Physics and Applications (INCT-FNA), Brazil, No. 464898/2014-5, and FAPESP Grant No. 2019/07767-1 (T. F.), and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brazil (CAPES)—Finance Code 001, and CNPq process 30.3701/2023-4, and FAEPEX 2030/24 Ver menos

Abstract: We explore the contribution of hadronic final state interactions (FSI) to propose a production mechanism and interpret the puzzle on helicity angle distributions in B+ -* p p,r+ and B+ -* ppK+ decays. Experimental results indicate opposite helicity angle 6p distributions in those two channels with the difference presenting a remarkable linear dependence on cos 6p. We assume the production mechanism is driven by B+ -* xym+ -* ppm+, where m = ,r or K, and xy represents favorable mesonic decay channels producing p p. We develop a model that includes a three-body final state interaction between the p, p, and ,r+ or K+ considering the dominance of elastic channels ,r+p and K+ p interactions below 2 GeV/c2. Our three-body framework with FSI explains qualitatively the observed opposite behavior of the helicity distributions and the observed linearity Ver menos