ZFITTER: An analytical program for fermion‐pair production
/ Authors
D. Bardin, M. Bilenky, A. Chizhov, O. Fedorenko, S. Ganguli, A. Gurtu, M. Lokajicek, G. Mitselmakher, A. Olshevsky, J. Řídký
and 8 more authors
S. Riemann, T. Riemann, M. Sachwitz, A. Sazonov, A. Schaile, Y. Sedykh, I. Sheer, L. Vertogradov
/ Abstract
I discuss the semi‐analytical codes which have been developed for the Z lineshape analysis at LEP I. They are applied for a model‐independent and, when using a weak library, a Standard Model interpretation of the data. Some of them are applicable for New Physics searches. The package ZFITTER serves as an example, and comparisons of the codes are discussed. The degrees of freedom of the line shape and of asymmetries are made explicit.
DOI: 10.1063/1.43365