Channel 1 has encountered a fraction of 0.374 of numerically unstable loop matrix element computations
Dear MadGraph Experts,
I am working on the following process in MadGraph: p p > h zp [QCD], and I am initiating the decays h > b b~ and zp > nu nu using the MadSpin card, where zp is a top-philic Z-prime boson. However, the simulation ends with an error message stating:
Command "generate_events run_01" interrupted with error:
Exception: Channel 1 has encountered a fraction of 0.374 of numerically unstable loop matrix element computations (which could not be rescued using quadruple precision). The results cannot be trusted.
Please report this bug on https:/
More information is found in '/root/
Could you please advise on how to resolve this error? Do I need to adjust any parameters in the MadLoop card to improve numerical stability?
Thank you very much for your help.
Best regards,
Ouseph
Question information
- Language:
- English Edit question
- Status:
- Open
- Assignee:
- Valentin Hirschi Edit question
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