Wrong cross-section in rel-2-2-6 ( and elsewhere?)
Hi, so I've tried to run e+e- --> b bbar + jets for debug and found that with default hadronisation and decays:
+-----------------------------------------------------+
| |
| Total XS is 9081.21 pb +- ( 44.3997 pb = 0.48 % ) |
| |
+-----------------------------------------------------+
with FRAGMENTATION=Lund
+----------------------------------------------------+
| |
| Total XS is 9150.77 pb +- ( 44.387 pb = 0.48 % ) |
| |
+----------------------------------------------------+
but with FRAGMENTATION=Lund
DECAYMODEL=Hadrons
+-----------------------------------------------------+
| |
| Total XS is 5445.97 pb +- ( 53.7442 pb = 0.98 % ) |
| |
+-----------------------------------------------------+
For the last case generation stops with
Sherpa: Lund_Interface::Error throws critical error:
Pythia calls PYERRM(14)
Exception_Handler::GenerateStackTrace(..): Generating stack trace
which does not look very logical.
Best regards, Andrii