Study of B→πlν semileptonic decay using lattice nonrelativistic QCD

1 INTRODUCTION / p2 　1.1 Lattice B Physics / p2 　1.2 B meson decays and basic theoretical ideas / p4 　1.3 The Lattice Simulations for the semileptonic decay form factors / p6 2 LATTICE FORMULATION / p10 　2.1 Lattice NRQCD action / p10 　2.2 Correlation functions / p12 　2.3 Perturbative corrections / p14 3 SIMULATION DETAILS / p18 　3.1 Simulation parameters / p18 　3.2 Light-light meson / p19 　3.3 Heavy-light meson / p22 　3.4 Three-point function and matrix elements / p25 　3.5 Form factors / p29 　3.6 Chiral extrapolation / p30 4 RESULTS AND PHYSICAL IMPLICATIONS / p32 　4.1 1/mB dependence / p32 　4.2 q²-dependence of the form factors / p40 　4.3 Soft pion theorem / p47 5 EXAMINATION OF SYSTEMATIC ERRORS / p49 6 CONCLUSION / p50