5 v 1 3 0 A ug 1 99 6 Back - reaction in the presence of thermalizing collisions

ar X iv : h ep - p h / 96 09 20 5 v 2 4 O ct 1 99 6 Back - reaction in the presence of thermalizing collisions

Preequilibrium parton production following an ultrarelativistic nucleus– nucleus collision is studied in terms of the decay of a strong chromoelectric field which generates pairs through the Schwinger mechanism. Back-reaction of the partons with the field is included and a model transport equation containing a collision term is solved for the central rapidity region based on an approximation in...

05 4 v 1 1 8 A ug 1 99 9 UCTP - 112 - 99 RECENT CHARM RESULTS FROM FERMILAB EXPERIMENT

Fermilab experiment E791 studied weak decays of D + , D + s , and D 0 mesons produced in collisions of 500 GeV/c negative pions with Pt and C targets. The experiment collected over 200 000 fully reconstructed charm decays. Four recent results are discussed here: (a) measurement of the form factor ratios V /A 1 , A 2 /A 1 , and A 3 /A 1 in D + → K * 0 ℓ + ν ℓ and D + s → φ ℓ + ν ℓ decays; (b) me...

62 v 2 2 6 A ug 1 99 6 The A + B → ∅ annihilation reaction in a quenched random velocity field

Using field-theoretic renormalization group methods the long-time behaviour of the A + B → ∅ annihilation reaction with equal initial densities n A (0) = n B (0) = n 0 in a quenched random velocity field is studied. At every point (x, y) of a d-dimensional system the velocity is parallel or antiparallel to the x-axis and depends on the coordinates perpendicular to the flow. Assuming that v(y) h...

/ 95 08 35 6 v 1 2 3 A ug 1 99 5 MC / TH 95 / 14 ρ → 4 π in chirally symmetric models

h / 99 08 09 2 v 1 1 3 A ug 1 99 9 INJE - TP - 99 - 5 Nonpropagation of tachyon on the BTZ black hole in type 0 B string theory

We obtain the BTZ black hole (AdS 3 ×S 3) as a non-dilatonic solution from type 0B string theory. Analyzing the perturbation around this black hole background, we show that the tachyon is not a propagating mode.