Which value to use for Higgs Total Width

hi,

Using Auto for the width of the Higgs is certainly not a good idea since this mode only account for tree-level decay.
In most of the case this is enough but not for the Higgs which has sizable loop-induced decay.

Cheers,

Olivier

> On Feb 20, 2016, at 18:22, shibasipu <email address hidden> wrote:
>
> Question #286429 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/286429
>
> Description changed to:
> Dear Oliver,
> I am generating some processes i.e. p p > h h z b and p p > z z h b in MG5_v2_3_3. In the first process, I am decaying one h i.e. h > b b~ and another h to i.e h> z l+ l- , z > l+ l- . In the second process h decays to i.e. h > w- l+ vl , w- > l- vl~. I have a confusion , which value should I use for total width i.e. width of h = Auto or 4.04 e -03 for m_h = 125 GeV. I am getting some large discrepancy in the production cross section and production cross section and BRs. I have also visited this faq https://answers.launchpad.net/mg5amcnlo/+faq/2442 . That is not solving the job.
>
>
>
> Regards,
> Shiba
>
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Thanks. That means should I set the total width of Higgs = 4.04 e -03 for m_h = 125 GeV for the above processes that I mentioned ?

Regards,
Shiba

Dear Olivier,
                         Please comment on my above response.

Regards,
Shiba

Hi Shiba,

I did not check the correct numerical value but I can see multiple valid choice
1) Use the width reported in the Higgs report for that mass
2) Use the LO width which takes into account the Loop-induced decay (as computed in the heft with the Auto command)

Cheers,

Olivier