K ?? form factor with Nf = 2+1 dynamical domain wall fermions

Antonio, D. J., Boyle, P.A., Dawson, C., Izubuchi, T., Jüttner, A., Sachrajda, C., Sasaki, S., Soni, A., Tweedie, R.J. and Zanotti, J.M. (2006) K ?? form factor with Nf = 2+1 dynamical domain wall fermions. Blum, Tom, Cruetz, Michael, De Tar, Carleton, Karsch, Frithjof, Kronfield, Andreas, Morningstar, Colin, Richards, David, Shigemitsu, Junko and Toussaint, Doug (eds.) In Proceedings of Lattice 2006, the XXIV International Symposium on Lattice Field Theory. Scuola Internaziole Superiore di Studi Avanzati. 7 pp .

Abstract

We present the latest results from the UKQCD/RBC collaborations for the Kl3 form factor with
2+1 avours of dynamical domain wall quarks. Simulations are performed on 1633216 and
243 6416 lattices with three values of the light quark mass, allowing for an extrapolation to
the chiral limit. After interpolating to zero momentum transfer, we obtain the preliminary result
f Kp
+ (0) = 0:9680(16), which is in excellent agreement with an earlier Nf = 2 result

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