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9 papers · 1 filter
Broken phase of the O(N) ϕ^4 model in light cone quantization and 1/N expansion
A. Borderies, P. Grangé, E. Werner
The solution of the O scalar field theory in the broken phase is given in the framework of light cone quantization and a 1/N expansion. It involves the successive building…
Heavy Quarks from QCD Spectral Sum Rules
Stephan Narison
We summarize the recent developments on the extraction of the dynamical properties of the heavy quarks from QCD spectral sum rules.
Unitarity Constraints for New Physics Induced by dim-6 Operators
G. J. Gounaris, J. Layssac, J. E. Paschalis +1
We compute the helicity amplitudes for boson-boson scattering at high energy due to the operators , and , and we derive the corresponding unitarity bounds.…
Dynamical Scenarios for Symmetric New Physics Interactions
G. J. Gounaris, F. M. Renard, G. Tsirigoti
We study a picture of effective interactions among the and Higgs bosons which is consistent with the precision tests at present energies, and at the same time allows for large…
Heavy Quarks from QCD Spectral Sum Rules
S. Narison
This is a short review of the present status of the dynamics of the heavy quarks extracted from QCD spectral sum rules. We discuss the determination of the ``perturbative" quark ma…
Target Independence of the Emc-SMC Effect
S. Narison, G. M. Shore, G. Veneziano
An approach to deep inelastic scattering is described in which the matrix elements arising from the operator product expansion are factorised into composite operator propagators an…