Alternative approach to B^- → η^′ K^- branching ratio calculation

2004/04/18 by Marina-Aura Dariescu, M.-A. Dariescu, Ciprian Dariescu +1 · 1 citation
Physics and Astronomy · #Amplitude #Branching (polymer chemistry) #Branching fraction #Factorization #Gravitational singularity #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-ph

paper · pdf · doi:10.1140/epjc/s2004-01897-x

published in The European Physical Journal C 36(2), 215-220 (Springer Science+Business Media) · 17 pages, 2 Postscript figures

arxiv created 2004/04/18 · openalex publication_date 2004/07/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Since the calculation of BR(B^- → η^′ K^-) in the framework of QCD improved factorization method, developed by Beneke et al., leads to numerical values much below the experimental data, we include two different contributions, in an alternative way. First, we find out that the spectator hard-scattering mechanism increases the BR value with almost 50%, but the predictions depend on the combined singularities in the amplitude convolution. Secondly, by adding SUSY contributions to the Wilson coefficients, we come to a BR depending on three parameters, whose values are constrained by the experimental data.

Citations

• η′g*g*vertex with arbitrary gluon virtualities in the perturbative QCD hard scattering approach
• Bounds on supersymmetric flavour violating parameters from B→Xsγ
• Trojan penguins and isospin violation in hadronic B decays
• QCD factorization in B→πK, ππ decays and extraction of Wolfenstein parameters
• Measurements ofCP-Violating Asymmetries and Branching Fractions inBMeson Decays toη′K
• A complete analysis of FCNC and CP constraints in general SUSY extensions of the standard model