Caso 21-96

Heavy Light Weak Matrix Elements * Shep–96–21

In this review I will focus on calculations of selected matrix elements involving b quarks. The semileptonic decays B̄→πlν̄l and B̄→ρlν̄l depend on the CKM element Vub which fixes one side of the unitarity triangle. Lattice calculations open the possibility for a model independent extraction of this quantity. The rare radiative decay B̄→K∗γ is important for the determination of Vts and as a window o...

Caso clínico

We describe the case of a 37-year-old pregnant woman who presented at 29 weeks of gestation with syncope and shortness of breath caused by pulmonary embolism. Due to persistent hypotension thrombolytic therapy with tenecteplase was administered and the clinical and hemodynamic response was excellent, with no maternal or fetal hemorrhagic complications. The clinical presentation of pulmonary emb...

ar X iv : h ep - p h / 96 06 42 1 v 1 2 4 Ju n 19 96 ANL - HEP - CP - 96 - 51 June 21 , 1996

We summarize calculations of the cross section for top quark production at hadron colliders within the context of perturbative quantum chromodynamics, including resummation of the effects of initial-state soft gluon radiation to all orders in the strong coupling strength. In our approach we resum the universal leading-logarithm contributions, and we restrict the calculation to the region of pha...

Statistica...sarà il caso?

Statistica...sarà il caso?