Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-09-25
Phys.Rev. D73 (2006) 015003
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, 6 figures and 5 tables. Text revised. Final version to appear in PRD
Scientific paper
10.1103/PhysRevD.73.015003
Recent experiments suggest that certain data of $B \to \pi\pi,\pi K$ decays are inconsistent with the standard model expectations. We try to explain the discrepancies with R-parity violating suppersymmetry. By employing the QCD factorization approach, we study these decays in the minimal supersymmetric standard model with R-parity violation. We show that R-parity violation can resolve the discrepancies in both $B \to \pi\pi$ and $B \to \pi K$ decays, and find that in some regions of parameter spaces all these requirements, including the CP averaged branching ratios and the direct CP asymmetries, can be satisfied. Furthermore, we have derived stringent bounds on relevant R-parity violating couplings from the latest experimental data, and some of these constraints are stronger than the existing bounds.
Lu Gong-Ru
Wang Rumin
Yang Ya-Dong
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