Spin Symmetry Without Heavy Quarks: Hyperon Form Factors In The Large N_c Limit

1996/02/29 by Chi-Keung Chow, Chow, Chi-Keung
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9602437

11 pages in REVTeX, no figures

arxiv created 1996/02/29 · openalex publication_date 1996/02/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In the large N_c limit, all hyperon decays involving the same quark diagram Q→ Q' are described by a single weak form factor η_QQ'(w). No assumption on the mass of Q or Q' is necessary, making our results applicable to both b→ c and c→ s transitions. This same form factor describes both Λ_Q→Λ_Q' and Σ^(*)_Q→Σ^(*)_Q' transitions. The (non-)commutativity between the heavy quark and the large N_c limits is briefly discussed under the definite example of Λ_b→Λ_c decay.

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