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File pythia.changes of Package pythia
------------------------------------------------------------------- Thu Sep 4 23:49:37 UTC 2014 - badshah400@gmail.com - Update to version 8.186: + New user hook to help experimentation with colour reconnection, in particular in relation to resonance decays + New set of parameters StringFlav:probQQ1toQQ0join, used to pick diquark spin when two already produced quarks are to be joined into a diquark + Possibility to map the bookkeeping of exotic unresolved incoming beams in Les Houches event files onto neutrino beams, see LesHouches:idRenameBeams; primarily intended for dark matter annihilation + A correction to the graviton (G^*) + parton hard processes (5003-5005) to account for off-shell G^* production; the previous formula assumed the graviton was on-shell and could greatly overestimate the low-mass tail of the G^*. + Bug fixes in examples/JetMatching.h, for uninitialized boolean, and number of partons to match for heavy flavour handling. The former bug was introduced with the new matching schemes in version 8.185 and affected matching to ALPGEN, since no events were rejected + Differentiate the reading of ALPGEN masses, so that vanishing c or b masses in ALPGEN are not unwittingly used where inappropriate; also protect the c and b masses from being set too low in TimeShower and SpaceShower, so that flavour thresholds are not messed up + Reduce number of maximum violation warnings in SpaceShower by leaving some headroom for branching weights + Bug fix that hasVetoed in Pythia.cc was not reset correctly in some specific cases + Bug fix in PartonLevel.cc where a reference could become invalid + Improvements and bug fixes in junction handling + Bug fix to not reuse colour indices in double diffraction + Bug fix in the calculation of the average mass threshold of open decay channels of a resonance; reduced ResonanceWidths::MASSMIN parameter value. + Correct typo in left-right symmetry documentation + Other minor fixes. ------------------------------------------------------------------- Sat Mar 15 21:21:44 UTC 2014 - badshah400@gmail.com - Update to version 8.185: + This is a bug-fix release, see http://www.hepforge.org/lists-archive/pythia8-announce/2014/000007.html for a summary of changes. ------------------------------------------------------------------- Sat Feb 22 05:10:04 UTC 2014 - badshah400@gmail.com - Update to version 8.183: + This is a bug-fix release, see http://www.hepforge.org/lists-archive/pythia8-announce/2014/000006.html for a list of changes. ------------------------------------------------------------------- Tue Dec 10 23:32:03 UTC 2013 - badshah400@gmail.com - Initial version
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