1998/05/31 by Blazenka Melic, Blaženka Melić · 2 citations
Mathematics · Physics and Astronomy · #Algorithm #Asymmetry #Electroweak interaction #Factorization #Hamiltonian (control theory) #High-Energy Particle Collisions Research #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Resummation #hep-ph
paper · pdf · doi:10.1103/physrevd.59.074005
published as Phys. Rev. D 59, 074005 (1999) · RevTex, 25 pages, 4 PostScript figures included, revised version, to be published in Phys.Rev.D
arxiv created 1998/11/30 · openalex publication_date 1999/02/17 · openalex created_date 2016/06/24 · arxiv updated 2016/08/24 · openalex updated_date 2026/08/05
Using a modified perturbative approach that includes the Sudakov resummation and transverse degrees of freedom we analyze the penguin-induced B^\ensuremath-\ensuremath→\ensuremathπ^\ensuremath-\ensuremathφ decay by applying the next-to-leading order effective weak Hamiltonian. The modified perturbative method enables us to include nonfactorizable contributions and to control virtual momenta appearing in the process. In addition, we apply the three-scale factorization theorem for nonleptonic processes that offers the possibility of having the scale-independent product of short- and long-distance parts in the amplitude of the weak Hamiltonian. The calculation supports the results obtained in the BSW factorization approach, illustrating the electroweak penguin dominance and the branching ratio of order O(10^\ensuremath-8). However, the estimated prediction of 16% for the CP asymmetry is much larger than that obtained in the factorization approach.