The Monte Carlo event generator YFSWW3 version 1.16 for W-pair production and decay at LEP2/LC energies

We present the Monte Carlo event generator YFSWW3 version 1.16 for the proc ess of W-pair production and decay in electron-positron collisions. It incl udes O(alpha) electroweak radiative corrections in the WW production stage together with the O(alpha (3)) initial-state-radiation (ISR) corrections in the leading-logarithmic (LL) approximation, implemented within the Yennie- Frautschi-Suura (YFS) exclusive exponentiation framework. The photon radiat ion in the W decays is generated by the dedicated program PHOTOS up to O(al pha (2)) LL, normalized to the W branching ratios. The program is interface d with the tau decay library TAUOLA and the quark fragmentation/hadronizati on package JETSET. The semi-analytical code Korwan for the calculations of the differential and total cross-sections at the Born level and in the ISR approximation is included. (C) 2001 Elsevier Science B.V. All rights reserv ed.