O'Mega fails to parse DMsimpt UFO file

Bug #1905125 reported by Thorsten Ohl on 2020-11-21
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Thorsten Ohl

Bug Description

| Model: Found UFO sources for model 'DMsimpt'
Fatal error: exception Invalid_argument("Y")
| command: /usr/local/bin/omega_UFO.opt -model:UFO_dir ./DMsimpt -model:exec -model:write_WHIZARD > DMsimpt.ufo.mdl

Reproduced w/ http://feynrules.irmp.ucl.ac.be/raw-attachment/wiki/DMsimpt/dmsimpt_v1.3.ufo.tgz from http://feynrules.irmp.ucl.ac.be/wiki/DMsimpt

This error message is not helpful. I will investigate.

Thorsten Ohl (thomega) on 2020-11-21
Changed in whizard:
importance: Undecided → High
assignee: nobody → Thorsten Ohl (thomega)
status: New → Triaged
Revision history for this message
Thorsten Ohl (thomega) wrote :

The hypercharge attribute is not documented in the UFO paper. I made the stupid error of expecting an integer (all UFO files that I had seen only had the nonsensical Y = 0), but I should have anticipated fractions of course.

As a temporary workaround until the fix is publicly available, just remove all 'Y = ...' attributes from particle.py, it is never used anyway.

Changed in whizard:
status: Triaged → Fix Committed
Changed in whizard:
status: Fix Committed → Fix Released
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