2006/09/30 by Wei Wang, Yue-Long Shen, Ying Li +2
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.74.114010
published as Phys.Rev.D74:114010,2006 · 25 pages, 7 figures, more references added
arxiv created 2006/11/16 · openalex publication_date 2006/12/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Within perturbative QCD approach based on kT factorization, we analyze the scalar mesons f0(980) and f0(1500) productions in B decays. By identifying f0(980) as the composition of ss and nn=(uu+dd)/√(2), we calculate the exclusive decays B\ensuremath→f0(980)K. We find that the nonfactorization f0-emission diagrams can give larger contribution to the branching ratio, than the previous PQCD calculation. Our new results can explain the current experimental data well. Under the assumption of quarkonium dominance, we study the branching ratio of decays B\ensuremath→f0(1500)K. The results show that in the two-quark picture of f0 meson the contribution from ss component is at the similar size as that from the nn component. Comparing the data, our results show the preference of f0(1500) as a member of the ground state of scalar qq nonet. Similar results can also apply to f0(1370) and f0(1710), if these mesons are dominated by the quarkonium content. With more experimental data in the future, these studies will help us understand the intrinsic characters of these scalar mesons.