A pr 2 00 9 Dispersive representation of the K π vector form factor and fits to τ → K πν τ and K e 3 data

Recently, we introduced several dispersive representatio s for the vector Kπ form factor and fitted them to the Belle spectrum of τ → Kπντ . Here, we briefly present the model and discuss the results for the slope and curvature of F+(s) arising from the best fit. Furthermore, we compare the pole position of the charged K∗(892) computed from our model with… (More)