We compare Monte Carlo event generators dedicated to simulating the production and decay of extra-dimensional black holes at the Large Hadron Collider.

Direct and indirect information on the top quark mass and its decay modes is reviewed. The theory of top production in hadron-and electron-positron-colliders is presented.

Though nothing is known for B → ππ,Kπ,KK, we might conjecture that the FSI phases diminish as the initial mass increases. Meanwhile the relative FSI phase is known for the ggg and ”γ” decay amplitudes of the J/ψ decays: 3 ∆δ ≈ 90 and 75 for J/ψ → 00 and 01, respectively. Therefore, if the FSI phases diminish with the increasing initial mass, it should start diminishing somewhere between mJ/ψ an...

We show how to observe sizable angular correlations between the decay products of the top quark and those of the anti-top quark in top quark pair production and decay at hadron colliders. These correlations result from the large asymmetry in the rate for producing like-spin versus unlike-spin top quark pairs provided the appropriate spin axes are used. The effects of new physics at production o...

Measurements of exclusive b-hadron lifetimes at LEP are reviewed. Each LEP experiment has collected about 3.5 million hadronic Z 0 decays between 1990 and 1994. This data allows to identify a large variety of exclusive decay chains of a speciic b hadron with suitable statistics to measure lifetimes. The world averages of exclusive b hadron lifetimes have gained a precision of less than 10%. The...

Hyperon non-leptonic weak decay amplitudes are studied in the chiral perturbation theory. The weak interaction vertices caused by the four quark operators are substituted by the products of the hadronic currents and by the phenomenologically introduced weak Hamiltonian of hadron operators. Our study suggests the improvement of the theoretical prediction for the weak decay amplitudes.