摘要: Within the HQET, the heavy to light vector meson transitions are systematically analyzed to the order of 1/mQ. Besides the four universal functions at the leading order, there are twenty-two independent universal form factors at the order of 1/mQ. Both the semileptonic decay B → #26; which is relevant to the |Vub| extraction, and the penguin induced decay B → K∗
which is important to new physics discovering, depend on these form factors.Phenomenological implications are discussed.