Elsevier Science Home
Computer Physics Communications Program Library
Full text online from Science Direct
Programs in Physics & Physical Chemistry
CPC Home

[Licence| Download | New Version Template] abrl_v1_0.gz(32 Kbytes)
Manuscript Title: DIZET: electroweak one loop corrections for e+ + e- -> f+ + f- around the Z0 peak.
Authors: D.Yu. Bardin, M.S. Bilenky, T. Riemann, M. Sachwitz, H. Vogt, P.Ch. Christova
Program title: DIZET
Catalogue identifier: ABRL_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 59(1990)303
Programming language: Fortran.
Computer: IBM, IBM PC.
Operating system: VM/SP, MSDOS.
Word size: 32
Keywords: Particle physics, Elementary, Qed, E+e- annihilation, Electroweak theory, Z0 decay, One-loop corrections.
Classification: 11.4.

Nature of problem:
The shape of the Z0 peak in e+e- annihilation is influenced by radiative corrections, among them the weak one-loop insertions. These are calculated in the standard electroweak theory. Derived quantities may also be calculated, e.g. the forward-backward asymmetry, the left- right asymmetry, and the final state polarization.

Solution method:
The package includes electroweak one loop corrections calculated in the on mass shell renormalization scheme using the unitary gauge. The differential cross section is evaluated as a function of the longitudinal polarization of the beam particles, the helicity of the final fermions, the production angle, and the energy of the process.

QED corrections connected with bremsstrahlung are considered as an independent part of the problem and are excluded from the package which is understood to become part of a larger program. Corrections higher than first order are not taken into account.

Running time:
 A 10 Mhz IBM PC/AT with a numerical coprocessor needs for               
 initialization:                                                 8 sec   
 one differential cross section value:                           1 sec