SMATASY - A program for the model independent description of the Z resonance

Abstract

SMATASY is an interface for the ZFITTER package and may be used for the model independent description of the Z resonance at LEP 1 and SLC. It allows the determination of the Z mass and width and its resonance shape parameters r and j for cross-sections and their asymmetries. The r describes the peak height and j the interference of the Z resonance with photon exchange in each scattering channel and for ${\sigma }_T$, ${\sigma }_{FB}$, ${\sigma }_{lr}$, ${\sigma }_{pol}$ etc. separately. Alternatively, the helicity amplitudes for a given scattering channel may be determined. We compare our formalism with other model independent approaches. The model independent treatment of QED corrections in SMATASY is applicable also far away from the Z peak.

25 pages (LaTeX), 5 figures, 1 table, see also http://www-zeuthen.desy.de/~riemann/ or http://hpl3sn02.cern.ch/homepages/gruenew/

References in corpus (4)

• Analytic approach to the complete set of QED corrections to fermion pair production in e+e- annihilation
• QED corrections with partial angular integration to fermion pair production in e+e- - annihilation
• S-Matrix Approach to the $Z$ Line Shape
• Cross-Section Asymmetries Around the $Z$ Peak

Cited by in corpus (15)

• Precision Electroweak Measurements on the Z Resonance
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• ZFITTER v.6.21 - A Semi-Analytical Program for Fermion Pair Production in e+e- Annihilation
• ZFITTER: a semi-analytical program for fermion pair production in e+e- annihilation, from version 6.21 to version 6.42
• Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-Pair Production at 189-209 GeV at LEP
• Towards consistent Electroweak Precision Data constraints in the SMEFT
• The two-loop electroweak bosonic corrections to ${\sin }^2{\theta }_{\mathrm{eff}}^{\mathrm{b}}$
• Measurement and Interpretation of Fermion-Pair Production at LEP energies above the Z Resonance
• Relativistic resonances: Their masses, widths, lifetimes, superposition, and causal evolution
• Electroweak pseudo-observables and Z-boson form factors at two-loop accuracy
• Hypercharge-Universal Topcolor
• Model-independent Representation of Electroweak Data
• Determination of gamma/Z interference in e+e- annihilation at LEP
• Predictions for Fermion Pair Production at e+e- Colliders
• The Z Boson Resonance Parameters