Associated Projects to Precision Monte Carlo Projects

I cover usually omitted essentials from more than 43 years of my own experience in the domain of precision Monte Carlo programs development. I was not working alone, my work was a continuation of earlier efforts. For example, Stanisław Jadach’s achievements before 1981 were essential. I was working with him and B.F.L. Ward over most of these years. Also, monumental projects of Bryan Lynn, Robin Stuart, Dima Bardin, and Wolfgang Hollik in the domain of precision physics need to be mentioned, because they affected my work. This is a challenging call for me! Usually, we were publishing our own projects, and the following incomplete lists of methodology domains and projects were left aside in references, appendices, and private notes: (i) phase space: symmetries, (ii) matrix element preparation \(→ \) factorizations, (iii) program and development process design, (iv) testing strategies, (v) user interaction, (vi) software tools, (vii) partners and competitors. The work started on the basis of previous efforts which can be listed following names of the programs: (i) FOWL, (ii) GENRAP, (iii) Mustraal, (iv) Koralb, (v) Lesko, (vi) TAUOLA, (vii) KORALZ, (viii) LUMLOG, (ix) OLDBAB, (x) BHLUMI, (xi) BHWIDE, and (xii) KKMC. I will focus on some of these points. Others, hopefully, are sufficiently well covered in other papers. In particular, I do not need to cover exponentiation, see contribution to the proceedings by W. Placzek and talk of B.F.L. Ward. Developments took years and did not follow a straight line; that is why there are inevitable simplifications and biases in my presentation. Also, a review of the essential literature could not be completed. Abstract Published by the Jagiellonian University 2026 authors