B ->pi l(v)over-bar form factors with NRQCD heavy quark and clover light quark actions

We report results on semileptonic B --> pi l<(nu)over bar> decay form facto rs near q(max)(2) using NRQCD heavy quark and clover light quark actions an d currents improved through O(alpha a). An inconsistency with the soft pion relation f(0)(q(max)(2)) = f(B)/f(pi) found in a previous work is confirme d, and a possible solution with nonperturbative renormalisation is discusse d. We find that f(+)(q(2)) is well described by the B* pole near q(max)(2), and its 1/M-B scaling is also consistent with the prediction of the pole d ominance model.