problem with taudecay_UFO
Hi,
I have problem with generating p p > ta+ ta-, ta+ > e+ ve vt~, ta- > e- ve~ vt with MG5_aMC_v2_3_3.
After I import model sm-lepton_masses and add model taudecay_UFO,
the cross section is 1209 +- 3.3 pb
which is larger than the cross section of p p > ta+ ta-, which is 836.4 +- 2.05 pb
I have checked the tau decay width in param, which is 2.270000e-12 (the sm value).
Besides, I have tried to increase the width to 2.270000e-5, in this way the cross section of
p p > ta+ ta-, ta+ > e+ ve vt~, ta- > e- ve~ vt is only 1.208e-11 +- 4.207e-14 pb.
I have also tried to import model sm-full. It does not work either.
Could you please help me?
Thanks in advance.
Gang Li
Question information
- Language:
- English Edit question
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- Open
- Assignee:
- Kentarou Mawatari Edit question
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