PYTHIA 8 error for mDM < 100 GeV
Hi,
I am using MadDM for studying DM indirect detection. In my model, there are 3 kinds of CP-even neutral Higgs bosons, and DM can annihilate into a pair of them, as well as other final states.
I was trying to generate gamma-ray spectrum with the 'precise' mode. I found that the gamma-ray spectrum can be successfully generated for mDM > 100 GeV. However, for mDM < 100 GeV, PYTHIA 8 failed to generate the spectrum. The error information in pythia8.log is as follows.
-------- LHA initialization information ------------
beam kind energy pdfgrp pdfset
A 52 97.198 0 247000
B 52 97.198 0 247000
Event weighting strategy = -4
Processes, with strategy-dependent cross section info
number xsec (pb) xerr (pb) xmax (pb)
1995 5.4686e+02 8.3103e-01 5.4686e+02
-------- End LHA initialization information --------
mDM: 9.7198e+01 outdir: ./
PYTHIA Error in Pythia::check: energy-momentum not conserved
PYTHIA Error in Pythia::next: check of event revealed problems
PYTHIA Abort from Pythia::next: parton+hadronLevel failed; giving up
PYTHIA Warning in TauDecays::decay: unknown correlated tau production, assuming from unpolarized photon
Event generation aborted prematurely, owing to error!
*------- PYTHIA Event and Cross Section Statistics -------
| |
| Subprocess Code | Number of events | sigma +- delta |
| | Tried Selected Accepted | (estimated) (mb) |
| | | |
|-----
| | | |
| Les Houches User Process(es) 9999 | 10 10 0 | 0.000e+00 0.000e+00 |
| ... whereof user classification code 1995 | 10 10 0 | |
| | | |
| sum | 10 10 0 | 0.000e+00 0.000e+00 |
| |
*------- End PYTHIA Event and Cross Section Statistics -------
*------- PYTHIA Error and Warning Messages Statistics -------
| |
| times message |
| |
| 10 Abort from Pythia::next: parton+hadronLevel failed; giving up |
| 100 Error in Pythia::check: energy-momentum not conserved |
| 100 Error in Pythia::next: check of event revealed problems |
| 1 Error in SigmaTotal::calc: too low energy |
| 1 Info from SLHAinterface:
| 1 Info from SLHAinterface:
| 1 Info from SLHAinterface:
| 1 Info from SLHAinterface:
| 2 Warning in SLHAinterface:
| 1 Warning in SLHAinterface:
| 4 Warning in SLHAinterface:
| 1 Warning in SLHAinterface:
| 1 Warning in SLHAinterface:
| 10 Warning in TauDecays::decay: unknown correlated tau production, assuming from unpolarized photon |
| |
*------- End PYTHIA Error and Warning Messages Statistics -------
Any idea for fixing this?
Thanks for the help!
Best regards,
Zhao-Huan
Question information
- Language:
- English Edit question
- Status:
- Open
- For:
- MadDM Edit question
- Assignee:
- No assignee Edit question
- Last query:
- Last reply:
Can you help with this problem?
Provide an answer of your own, or ask Zhao-Huan Yu for more information if necessary.