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Opened 14 years ago

Closed 11 years ago

#158 closed defect (wontfix)

Example LHC_Pb_EPA Defect - PhaseSpace-Problem

Reported by: Generic User (don't modify these fields) Owned by: support@sherpa-mc.de
Priority: minor Milestone: rel-2.0.0
Component: Unknown Version: 0.trunk
Keywords: EPA Cc: freidt@physi.uni-heidelberg.de

Description

Running the example fails due to nan in s: Invoking Sherpa the following way: Examples/LHC_Pb_EPA $ ../../bin/Sherpa -f Run.dat -m Internal produces this output:

Single_Process::CalculateTotalXSec(): Calculate xs for '2_2PPpi+pi-' (Internal) Starting the calculation. Lean back and enjoy ... . Channel_Basics::SqLam argument nan <0 in Channel_Basics::sqlam() s;s1;s2: nan;0.0194798;0.0194798 Phase_Space_Handler::Check4Momentum(): {

p_0 = (nan,nan,nan,nan) (nan) p_1 = (nan,nan,nan,nan) (nan) p_2 = (nan,nan,nan,nan) (nan) p_3 = (nan,nan,nan,nan) (nan) p_in = (nan,nan,nan,nan) (nan) p_out = (nan,nan,nan,nan) (nan) diff = (nan,nan,nan,nan) (nan)

} ...

The behavior is quite similar for gamma gamma -> e+ e- using Comix

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Change History (4)

comment:1 Changed 14 years ago by Frank Siegert

Milestone: rel-2.0.0

comment:2 Changed 12 years ago by Frank Siegert

Milestone: rel-1.4.0rel-2.0.0

comment:3 Changed 12 years ago by Stefan Hoeche

Priority: majorminor

comment:4 Changed 11 years ago by Stefan Hoeche

Resolution: wontfix
Status: newclosed

Closing ticket due to inactivity. Please reopen if still relevant.

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as closed The owner will remain support@sherpa-mc.de.

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