Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-04-15
Phys.Rev.D80:035021,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 3 figures; minor changes, references added; 1 figure, more references, and 1 appendix on independent quark-mixing pa
Scientific paper
10.1103/PhysRevD.80.035021
Low-energy experiments involving kaon, B-meson, D-meson, and hyperon flavor-changing neutral transitions have confirmed the loop-induced flavor-changing neutral current (FCNC) picture of the standard model (SM). 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 SM in the charm sector and their effect on FCNC processes. Specifically, we parameterize 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.
He Xiao-Gang
Tandean Jusak
Valencia German
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