Calculate fractions using Histfactory

[cpkar]

Hi Experts,

I am trying to calculate the contribution of MC distributions from data using Histfactory. Is there any example of doing that?

Many thanks
Chandi

[cpkar]

Hi Experts,

Could you please comment in this thread?

Thanks
Chandi

[couet]

There is histfactory examples in $ROOTSYS//tutorials/histfactory/
May be @moneta can give more hints.

[cpkar]

Could you please point out which one is the example of calculating the MC fractions from data? (alternative of TFractionfitter)

Best regards,
Chandi

[couet]

I let @moneta give more hints.

[cpkar]

Hi @moneta and @couet,

Could you please give me an example of histfactory to calculate MC fractions from data?

Thanks
Chandi

[moneta]

Hi,

If you want to just compute the MC fractions, maybe the TFractionFitter class is better for you and easier.
We don’t have a tutorial for TFractionFitter, but a good example is for example this one
https://indico.in2p3.fr/event/2635/contributions/25070/attachments/20154/24769/fractionFitterExample.C

Lorenzo

[cpkar]

Hi @moneta,

Thanks for your reply.
Yes I have done the tfractionfitter, but i am not sure about the error propagation in it. That’s why I want to try the histfactory method for cross check.

Regards,
Chandi