K^L_{mu3} decay: A first evidence of Right-Handed Quark Currents ?

Details K^L_{mu3} decay: A first evidence of Right-Handed Quark Currents ? K^L_{mu3} decay: A first evidence of Right-Handed Quark Currents ?

2006-09-26

arxiv.org/abs/hep-ph/0609272v1

Nucl.Phys.Proc.Suppl.167:7-10,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures. Talk given at the 7th International Conference on Hyperons, Charm And Beauty Hadrons (BEACH 2006), 2-8 Jul

Scientific paper

10.1016/j.nuclphysbps.2006.12.08

The experimental results published by KTeV and the preliminary results from NA48 concerning the slope of the Kpi scalar form factor suggest a significant discrepancy with the prediction of the Callan-Treiman low energy theorem once interpreted within the Standard Model. In this talk, we will show how this discrepancy could be explained as a first evidence of the direct coupling of right-handed quarks to W as suggested by certain type of effective electroweak theories.

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