Mixing angles of ΞQ−ΞQ′ in heavy quark effective theory

2020/11/19 by Y. Matsui, Yoshimitsu Matsui
Mathematics · Physics and Astronomy · #Algorithm #Baryon #Charm (quantum number) #Hadron #High-Energy Particle Collisions Research #Mathematics #Mixing (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #hep-ph #nucl-th

paper · pdf · doi:10.1016/j.nuclphysa.2021.122139

7 pages, no figures

arxiv created 2020/11/19 · openalex created_date 2020/11/23 · openalex publication_date 2021/01/13 · arxiv updated 2021/02/03 · openalex updated_date 2026/08/05

Abstract

The Heavy Quark Effective Theory provides a systematic method to estimate a mixing angle of hadron states in a heavy quark, such as the charm quark (c) and the bottom quark (b). By using this method, the mixing angle of the baryons \varXi_Q-\varXi_Q' can be estimated. It is found that the mixing angle between \varXi_Q and \varXi_Q' is given by θ_b = 4.51^∘ ± 0.79 ^∘ for Q = b case and θ_c = 8.12^∘ ± 0.80 ^∘ for Q = c case.

Citations

• Mixing ofΞc−Ξc′baryons
• Enhancement of the Λ decay rate