Study ofBs→πρdecays in the perturbative QCD approach

2005/11/30 by Xian-Qiao Yu, Ying Li, Cai-Dian Lü · 5 citations
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.73.017501

published as Phys.Rev.D73:017501,2006 · 6 pages, 3 figures

openalex publication_date 2006/01/05 · arxiv created 2006/01/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

In this note, we calculate the branching ratio and CP asymmetry parameters of B_s\ensuremath→\ensuremathπ\ensuremathρ in the framework of perturbative QCD approach based on k_T factorization. This decay can occur only via annihilation diagrams in the standard model. We find that (a) the charge averaged Br(B_s\ensuremath→\ensuremathπ⁺\ensuremathρ^\ensuremath-+\ensuremathπ^\ensuremath-\ensuremathρ⁺) is about (9\ensuremath-12)\ifmmode×\else\texttimes\fi10^\ensuremath-7; Br(B_s\ensuremath→\ensuremathπ⁰\ensuremathρ⁰)\ensuremath≃4\ifmmode×\else\texttimes\fi10^\ensuremath-7; and (b) there are sizable CP asymmetries in the processes, which can be tested in the near future Large Hadron Collider beauty experiments (LHC-b) at CERN.

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