2006/08/31 by A. Giri, A. K. Giri, Barilang Mawlong +3
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.74.114001
published as Phys.Rev.D74:114001,2006 · 18 pages, 5 figures, version to appear in Phys. Rev. D
arxiv created 2006/11/14 · openalex publication_date 2006/12/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the hadronic decay modes B^\ifmmode±\else\textpm\fi(0)\ensuremath→f0(980)K^\ifmmode±\else\textpm\fi(0), involving a scalar and a pseudoscalar meson in the final state. These decay modes are dominated by the loop induced b\ensuremath→sqq(q=s,u,d) penguins along with a small b\ensuremath→u tree level transition (for B+\ensuremath→f0K+) and annihilation diagrams. Therefore, the standard model expectation of direct CP violation is negligibly small and the mixing-induced CP violation parameter in the mode B0\ensuremath→f0KS is expected to give the same value of sin(2\ensuremathβ), as extracted from B0\ensuremath→J/\ensuremathψKS but with opposite sign. Using the generalized factorization approach we find the direct CP violation in the decay mode B+\ensuremath→f0K+ to be of the order of few percent. We then study the effect of the R-parity violating supersymmetric model and show that the direct CP violating asymmetry in B+\ensuremath→f0(980)K+ could be as large as \ensuremath∼80% and the mixing-induced CP asymmetry in B0\ensuremath→f0KS (i.e., \ensuremath-S_f0KS) could deviate significantly from that of sin(2\ensuremathβ)_J/\ensuremathψKS.