# Determination of the magnetic susceptibility of the quark condensate using radiative heavy meson decays - High Energy Physics - Phenomenology

Determination of the magnetic susceptibility of the quark condensate using radiative heavy meson decays - High Energy Physics - Phenomenology - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We use a light-cone sum rule LCSR analysis of the branching ratios ofradiative meson decays to contrain the value of the magnetic susceptibility ofthe quark condensate $\chi\mu$. For the first time, we use a complete set ofthree-particle distribution amplitudes that enables us to give a consistentprediction for the branching ratios. Furthermore we will make use of a veryrecent update of several non-perturbative parameters. Our final result for$\chi\mu= 1 { m GeV}= 2.85 \pm 0.5 { m GeV}^{-2}$ assuming asymptotic wavefunctions agrees with the currently used value of $3.15 \pm 0.3 { mGeV}^{-2}$.

Autor: J. Rohrwild

Fuente: https://arxiv.org/