Hadronic rescattering to solve the helicity puzzle in B plus -* ppπ+ (K plus ) decays

Autor(es)

Bediaga, I. ; Shalchi, M. A. ; Frederico, T. ; Magalhaes, P. C.

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW D; v. 110, n. 9, p. 12-pg., 2024-11-27.

Resumo

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<overline>,r+ and B+ -* pp<overline>K+ 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+ -* pp<overline>m+, where m = ,r or K, and xy represents favorable mesonic decay channels producing p p<overline>. We develop a model that includes a three-body final state interaction between the p, p<overline>, and ,r+ or K+ considering the dominance of elastic channels ,r+p and K+ p<overline> 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. (AU)

• Processo FAPESP: 19/07767-1 - Reações nucleares com núcleos fracamente ligados ou com estrutura de cluster, radioativos e estáveis
• Beneficiário: Leandro Romero Gasques
• Modalidade de apoio: Auxílio à Pesquisa - Temático