Dear Experts, I am trying to fit my data using double sided crystal ball + Gaussian. The initial parameters looks fine however I got nan in error (see pdf attached). Also, I have tried to extract an uncertainties yields of both signal and background. I tried to use fitNormSum but I face issue with …

Nan in error fitting

python, hist

Wile_E_Coyote March 4, 2022, 3:38pm 8

Compute uncertainty of integral of a component of a TF1 ROOT

Hi, I am wondering whether there is functionality in standard ROOT (not RooFit) to compute the uncertainty of a component of a TF1. E.g. if fitting a function TF1 f1(“f1”,“gaus(0)+pol2(3)”) to a spectrum, I’d like to get the integral and its uncertainty only for the gaus(0) component. If there is no function available, how can I properly can do this myself? Another related question: If using a signal component, where the “amplitude” parameter already represents the integral (like it should b…

show post in topic

Home
Categories
Guidelines
Terms of Service
Privacy Policy

Powered by Discourse, best viewed with JavaScript enabled