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We apply the operator product expansion to resum the leading nonperturbative corrections to the end-point region of the lepton spectrum in inclusive semileptonic [ital B][r arrow][ital X][sub [ital… (More)

The construction of heavy quark effective field theory (HQEFT) is extended to arbitrary order in both expansion parameters [alpha][sub [ital s]] and 1/[ital m][sub [ital q]]. Matching conditions are… (More)

- Mannel
- Physical review. D, Particles and fields
- 1994

The general structure of the 1/[ital m] corrections at zero recoil is studied. The relevant matrix elements are forward matrix elements of local higher dimensional operators and their time ordered… (More)

We point out that in the decays of the Λ b to Λ c one can find predictions which, in the framework of the 1/m c expansion, do not receive corrections in any order of 1/m c . We discuss QCD… (More)

We present a complete calculation of the two-loop anomalous dimension and the corresponding Wilson coefficient for bilinear currents of heavy quarks. For momentum transfers [minus][infinity][lt][ital… (More)

We suggest simple experimental tests to determine whether or not the factorization assumption is valid for the two-body, nonleptonic decays of heavy hadrons, when both daughter hadrons are also heavy.

By intrasplenic immunization we raised a rat mAb (mAb Vlq; IgG2a,~) with a potent neutralizing activity against natural mouse TNF (1 pg/ml mAb Vlq/ 100 U/ml TNF). mAb V l q was used to study the role… (More)

The unitary approximation, which sums contributions of every order, is applied to infrared singularities. The applicability for practical calculation is demonstrated on QED processes.

We enumerate the form factors necessary to describe the two-body baryonic decays of {ital B} mesons. We use the symmetries of the heavy quark effective theory to arrive at some relations among these… (More)