0000000000597792
AUTHOR
S. Ciulli
Determination of resonance parameters in QCD by functional analysis methods
A mathematically rigorous method based on functional analysis is used to determine resonance parameters of an amplitude from its given asymptotic expression in the space-like region. This method is checked on a model amplitude where both the asymptotic expression and the exact function are known. This method is then applied to the determination of the mass and the width of the ρ-meson from the corresponding space-like asymptotic QCD expression.
QCD condensates from tau-decay data: A functional approach
We study a functional method to extract the V − A condensate of dimension 6 from a comparison of τ -decay data with the asymptotic space-like QCD prediction. Our result is in agreement within errors with that from conventional analyses based on finite energy sum rules.
Genotyping of bovine diarrhea virus (BVDV) isolated from cattle in Sicily
Bovine Viral Diarrhoea - Mucosal Disease (BVD-MD) is a widely spread infectious disease that cause economically important losses in farms. Several epidemiological studies indicate a high genetic heterogeneity among Bovine Viral Diarrhoea Virus (BVDV) strains circulating in Italy. The aim of this study was to investigate the genotypes of BVDV in Sicily, a region in the South of Italy. For this purpose, 17 BVDV strains collected from cattle breed in Sicily between 2005 and 2008 were genetically typed by sequencing of 5'-untraslated region (5’-UTR) of the viral genome. In this study, phylogenetic analysis showed that all 17 examined strains were clustered within the BVDV genotype 1. Particular…