7,464 research outputs found
DIANA and selected applications
New developments concerning the extension of the Feynman diagram analyzer
DIANA are presented. We discuss new graphics facilities, different approaches
to automation of momenta distribution and parallel processing facilities.
Furthermore applications to production and Bhabha scattering are
shortly discussed.Comment: Latex, 5 pages, 4 eps figures, uses included npb.sty, presented by at
RADCOR and Loops and Legs 2002 8-13 September 2002, in Kloster Banz, German
A Feynman diagram analyzer DIANA: recent development
New developments concerning the extension of the Feynman diagram analyzer
DIANA are presented. We discuss new graphic facilities, application of DIANA to
processes with Majorana fermions and different approaches to automation of
momenta distribution.Comment: 2 pages, Latex using espcrc2.sty, 3 figures using 3 eps files.
Contribution to ACAT 2002, Moscow, Russia, June 24-28, 200
Sophisticated momenta mapping with DIANA
Details of recent developments of the Feynman diagram analyzer DIANA (DIagram
ANAlyser) are presented. Apart from some discussion about QGRAF and new
plotting features, we concentrate on a new sophisticated mechanism of momenta
mapping.Comment: 4 pages, 4 Encapsulated postscript figures, LaTeX2e, uses espcrc2.sty
(included). Talk given at ACAT0
Parallel Computation of Feynman diagrams with DIANA
Co-operation of the Feynman DIagram ANAlyzer (DIANA) with the underlying
operational system (UNIX) is presented. We discuss operators to run external
commands and a recent development of parallel processing facilities and an
extension in the spirit of a component model.Comment: 23 pages, Latex using psfig, epsf and alltt, 3 figure
Exploring CP Violation through B Decays
The B-meson system provides many strategies to perform stringent tests of the
Standard-Model description of CP violation. In this brief review, we discuss
implications of the currently available B-factory data on the angles alpha,
beta and gamma of the unitarity triangle, emphasize the importance of Bs
studies at hadronic B experiments, and discuss new, theoretically clean
strategies to determine gamma.Comment: 22 pages, 4 figures, invited brief review for Modern Physics Letters
DIANA, a program for Feynman Diagram Evaluation
A C-program DIANA (DIagram ANAlyser) for the automatic Feynman diagram
evaluation is presented.Comment: LaTeX, 5 pages, no figures; talk given at 6th International Workshop
on Software Engineering, Artificial Intelligence, Neural Nets, Genetic
Algorithms, Symbolic Algebra, Automatic Calculation (AIHENP 99), Heraklion,
Crete, Greece, 12-16 April, 199
A Feynman Diagram Analyser DIANA
A C-program DIANA (DIagram ANAlyser) for the automatic Feynman diagram
evaluation is presented. It consists of two parts: the analyzer of diagrams and
the interpreter of a special text manipulating language. This language is used
to create a source code for analytical or numerical evaluations and to keep the
control of the process in general.Comment: 20 pages, latex, 3 eps figure
Leptonic contribution to the effective electromagnetic coupling constant up to three loops
In this note the leptonic contribution to the running of the electromagnetic
coupling constant is discussed up to the three-loop level. Special emphasize is
put on the evaluation of the double-bubble diagrams.Comment: 5 pages (Latex) 2 figure
Two-loop self-energy master integrals on shell
Analytic results for the complete set of two-loop self-energy master
integrals on shell with one mass are calculated.Comment: 14 pages, LaTeX, one eps-figure; in v5. misprints in the Eq.(2) and
Table II correcte
- …