ARIADNE

For convenience of the CERNLIB installation procedures, the Fortran file contained in the tar file listed below was converted into a PATCHY CAR and CMZ binary file.

Version 4.07 of Ariadne has now been released. The changes with respect to previous releases are described briefly in the updated manual, a piece of which is appended below.

The new release is as usual available as a compressed 'tar' distribution via anonymous ftp to freehep.scri.fsu.edu in the file freehep/event_generators/ariadne-4.07.tar.Z, or with WWW using the URL http://surya11.cern.ch/users/lonnblad/ariadne/ariadne-4.07.tar.gz

A Fortran file containing the full source code is available through DECNET:

VXDESY::DISK$T__:[LONNBLAD.ARIADNE_4]ARIADNE_407.FOR;1

The updated manual is also available through DECNET in ASCII version:

VXDESY::DISK$T__:[LONNBLAD.ARIADNE_4]ARIADNE.MAN;1

These two files will also be sent to you via e-mail if requested.

Leif Lonnblad

• version 4.07: Included correction for O(alpha_S) matrix elements and improved the treatment of Drell-Yan production.
• Introduced a colour reconnection scheme governed by MSTA(35) and PARA(26) (switched off by default). This feature is so far not docu- mented here.
• Changed default treatment of extendedness. For remnants, mu is given by the intrinsic p_T, which is now generated inside of Ariadne (see MSTA(36), MSTA(37) and PARA(27)). By default the struck quark in DIS is now extended with mu= Q.
• Changed default parameters and switches to reflect the new features. In particular, the default call to ARTUNE('EMC') has changed, and to retain the behavior of version 4.06 a call to ARTUNE('4.06') should be made instead.