Yes, right! The "hello world" example of generator tuning! But, now, i am looking forward for it to be completed from the Professor side. Then unless we have seriously misjudged Professor, all it would take to scale up the "hello world" example to the most extensive parameters estimation we will ever do is more CPU cycles and disk space! And if, besides the best-fit parameters and error matrix, we can easily access the Professor parameterisation of the GENIE prediction in each bin, then we have the most natural and computationally efficient solution (with absolutely minimal amount of coding) for mapping the parameter error matrix to error envelopes in the space of fitted observables, including the effect of correlations. So, things look bright!
Have a good weekend!
cheers
Costas
--
Dr Constantinos Andreopoulos
Reader (Assoc. Professor) in Particle Physics
Univ. of Liverpool & STFC Rutherford Appleton Lab
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Sent from my iPhone
On 2 Dec 2016, at 19:48, Gabriel Nathan Perdue <[log in to unmask]<mailto:[log in to unmask]>> wrote:
Bravo Marco!
I'm sure the MiniBooNE collaboration would be pleased to see we agree so closely with the M_A value they preferred as well. ^_^
pax
Gabe
On Dec 2, 2016, at 10:00 AM, Marco Roda <[log in to unmask]<mailto:[log in to unmask]>> wrote:
Hi all,
On behalf of all the other Liverpool people, I would like share with you a partial result of the first tuning exercise.
In the last meeting we talked about different stages to be carried on together with professor people.
The first stage - simple tuning of one parameter against CCQE miniboone data - is almost completed.
In attachment you can find the chi square as a function of the chosen parameter, CCQE-Ma.
We picked the minimum by eye, as we simply wanted to check the feasibility.
You also have the comparison between the default value (Ma = 0.990 GeV) and the value we picked, Ma = 1.41 GeV.
It is a relatively simple result, but this is actually our first tuning ever, that's why we think it is important to be shared.
These plots, together with other outputs, are going to be sent to Professor people to finalise the interface between GENIE and Professor.
Best regards,
Marco
--
Marco Roda, PhD in Physics
Post Doctorate Research Associate
University of Liverpool
Department of Physics
Oliver Lodge Laboratory
Liverpool L69 7ZE, UK
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<miniboone_nuccqe.pdf><plot.pdf>
Gabriel Perdue
Associate Scientist
Scientific Computing Division
Fermi National Accelerator Laboratory
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