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33 papers · 2 filters
New method for calculating helicity amplitudes of jet--like QED processes for high--energy colliders I. Bremsstrahlung processes
C. Carimalo, A. Schiller, V. G. Serbo
Inelastic QED processes, the cross sections of which do not drop with increasing energy, play an important role at high-energy colliders. Such reactions have the form of two-jet pr…
Dynamical relativistic corrections to the leptonic decay width of heavy quarkonia
F. Bissey, J-J. Dugne, J-F. Mathiot
We calculate the dynamical relativistic corrections, originating from radiative one-gluon-exchange, to the leptonic decay width of heavy quarkonia in the framework of a covariant f…
Black Hole Production in Large Extra Dimensions at the Tevatron: Possibility for a First Glimpse on TeV Scale Gravity
Marcus Bleicher, Stefan Hofmann, Sabine Hossenfelder +1
The production of black holes in large extra dimensions is studied for Tevatron energies. We find that black holes may have already been created in small abundance in co…
Centrality Behaviour of J/ Production in Na50
SÉRGIO RAMOS
The J/ production in 158 A GeV Pb-Pb interactions is studied, in the dimuon decay channel, as a function of centrality, as measured with the electromagnetic or with the very for…
Overpopulation of in pp collisions: a way to distinguish statistical hadronization from string dynamics
M. Bleicher, F. M. Liu, A. Keränen +5
The ratio originating from string decays is predicted to be larger than unity in proton proton interactions at SPS energies (=160 GeV). The anti-omega domina…
Extra generations and discrepancies of electroweak precision data
V. A. Novikov, L. B. Okun, A. N. Rozanov +1
It is shown that additional chiral generations are not excluded by the latest electroweak precision data if one assumes that there is no mixing with the known three generations. In…