MadWeight: Number of data points smaller than number of parameters

Hi Juan,

You have a single theoretical hypothesis in order to be able to do the plots you need at least 3 theoretical hypothesis.
In other word -9 Does not makes sense in your analysis.

Cheers,

Olivier

On Jul 23, 2012, at 7:21 PM, Juan Pablo Gomez wrote:

> New question #203956 on MadGraph5:
> https://answers.launchpad.net/madgraph5/+question/203956
>
> Dear all,
> I am trying to run the semileptonic decay of ttbar, but it is a very long process and I had to reduce the number of events to 100 in order to get some result, but the problem is that I am getting an error message that says "Number of data points smaller than number of parameters". Note: I get this in the step -9 of MW.
> The cards that I am using are something like this:
>
> pp>(t~>(w->l- vl~)b~)(t>(w+>jj)b) @1 # First Process
> QCD=99 # Max QCD couplings
> QED=99 # Max QED couplings
> end_coup # End the couplings input
> _______________________________________
> _______________________________________
>
> # TAG VALUE UTILITY
> name fermi # name for the run
> cluster 0 # 0:single machine, 1: condor, 2: SGE
> # 3: Bash cluster, 4: multiprocessor, 5: qsub
> # For more info, see the wiki
> queue 'madgraph==True' # queue condition (usage depend of the cluster)
> nb_exp_events 10 # number of experimental events to consider
> write_log F # avoid writting of a lot of log files
> normalize T # normalizes weight (1/sigma prefactor)
> ME_int_points 10000 # number of points in MadEvent integration
> MW_int_points 10000 # number of points in MadWeight integration
> use_cut F # use the cut defined in run_card.dat
> bw_cut F # use the BW cut
>
>
> #*************************************************************************
> ## define the different param_card's ##
> #*************************************************************************
> Block MW_parameter
> # TAG VALUE UTILITY
> mode 1 # type of input
> # 0 : inputs are read from the cards: param_card_1.dat, param_card_2.dat,...
> # 1 : redefines some values from param_card.dat according to the form below
> # 2 : same but the value for different parameters are modified simultaneously
> #
> # # first parameter #
> 11 mass # Block of the parameter to change
> 12 6 # id of the parameter to change
> 13 180 # here you can enter the different values:
>
> #
> # # second parameter #
> #
> # use same syntax for parameters 3,4,...
> #*************************************************************************
> ## Permutations ##
> #*************************************************************************
> Block MW_perm
> # TAG VALUE UTILITY
> permutation T # make permutation
> bjet_is_jet T # consider permutation between b-jets and light jets
>
> Could you please indicate me what I can do?.
> Thanks in advance,
>
> JP
>
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Thanks a lot Olivier, you are very kind.
Cheers,

JP