2009/04/30 by Xiao-Gang He, Jusak Tandean, G. Valencia
Physics and Astronomy · #B meson #Boson #Charm (quantum number) #Current (fluid) #Flavor #High-Energy Particle Collisions Research #Low energy #Meson #Neutral current #Neutrino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Quark #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.80.035021
published as Phys.Rev.D80:035021,2009 · 26 pages, 3 figures; minor changes, references added; 1 figure, more references, and 1 appendix on independent quark-mixing parameters added, main results unchanged, final version
openalex publication_date 2009/08/25 · arxiv created 2009/09/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Low-energy experiments involving kaon, B-meson, D-meson, and hyperon flavor-changing neutral transitions have confirmed the loop-induced flavor-changing neutral current picture of the standard model. The continuing study of these processes is essential to further refine this picture and ultimately understand the flavor dynamics. In this paper we consider deviations from the standard model in the charm sector and their effect on flavor-changing neutral current processes. Specifically, we parametrize new physics in terms of left- and right-handed anomalous couplings of the W boson to the charm quark. We present a comprehensive study of existing constraints and point out those measurements that are most sensitive to new physics of this type.