A Monte Carlo Event Generator for p p, pbar p, and e+ e- Interactions
H. Baer, F.E. Paige, S.D. Protopopescu, and X. Tata
ISAJET is a Monte Carlo program which simulates p p, pbar p, and e+
e- interactions at high energies. It is based on perturbative QCD plus
phenomenological models for parton and beam jet fragmentation. The
describes the physics and explains how to use the program.
ISAJET is written in Fortran 77 (with a few common extensions) and
is distributed using the
code management system developed at CERN. The Patchy source file
can be be unpacked and compiled on any supported Unix system by editing
and selecting the appropriate options.
Compiling ISAJET on any other computer with ANSI Fortran 77 and Patchy,
including any for which CERNlib is supported, should be
Since release 7.72, ISAJET has been interfaced with IsaTools, which
In addition to the files for ISAJET, IsaTools requires
which contains computer-generated code for IsaRED. Including IsaTools is
optional, but it is included by default in the Makefile. See Section 13
of the manual for more information.
- IsaRED, subroutines to evaluate the relic density of (stable)
neutralino dark matter in the universe;
- IsaBSG, subroutines to evalue the branching fraction BF(b -> s
- IsaAMU, subroutines to evaluate supersymmetric contributions to
Delta a_mu = (g-2)_mu/2;
- IsaBMM, subroutines to evaluate BF(B_s -> mu+ mu-) and BF(B_d ->
tau+ tau-) in the MSSM;
- IsaRES, subroutines to evaluate the spin-independent and
spin-dependent neutralino-proton and neutralino-neutron scattering cross
sections for direct detection of dark matter.
We especially thank Alexander Belyaev for his contributions to
We express deep thanks to Andrew Box for embedding his
RGEFLAV code into Isajet 7.81.
describes changes from the previous version. A history of changes in
contained in isajet.car.
Some older .car files are available