The construction of an instrument for the evaluation of student teachers.

Thesis (Ed.M.)--Boston Universit

Ward Identities, B-> \rho Form Factors and |V_ub|

The exclusive FCNC beauty semileptonic decay B-> \rho is studied using Ward identities in a general vector meson dominance framework, predicting vector meson couplings involved. The long distance contributions are discussed which results to obtain form factors and |V_ub|. A detailed comparison is given with other approaches.Comment: 30 pages+four postscript figures, an Appendix adde

B → ρ ℓ ν form factors in lattice QCD

We present results from quenched lattice QCD for the form factors for the decay B → ρ ℓ ν.  The calculations are performed using a nonperturbatively improved action and operators at two values of the lattice spacing. The bottom quark mass is reached by extrapolation from simulations performed with heavy quark masses around the charm mass. Our primary result is for the partially integrated decay rate ΓPI over the range 12.7 GeV2 < q2 < 18.2 GeV2 : ΓPI = 4.9 +12+0-10-14  ×  1012 s-1 |Vub|2