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Paper detail

Electromagnetic corrections to pseudoscalar decay constants

The effects of electromagnetic interactions on pseudoscalar decay constants are investigated. Using a compact QED and QCD action we are able to resolve differences of about 0.1 MeV. We obtain the preliminary results f_pi^0-f_pi^+/- =0.09(3) MeV and f_D^0-f_D^+/- =0.79(11) MeV for light and charmed pseudoscalar decay constants on a N_f=2 nonperturbatively improved Sheikholeslami-Wohlert ensemble.

preprint2011arXivOpen access
Benjamin GlaessleGunnar S. Bali
hep-lat
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Benjamin GlaessleGunnar S. Bali

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