Dear ROOT Forum,
I have successfully used roofit to fit the two kshorts in my decay channel( using the invariant mass variable to use roofit!). Now, what can I do after this?
Like, I got a peak-like region in both the Kshorts, and the width is also different for the two. How, can I do Kshort selection using mass (or any other kinematic variables like flight length etc…)?
I thought that you first do the selections when generating the ‘.root’ file and then roofit, right? is that not the case?
Kindly find the attached roofits as reference! ( I have only the signal mc file, no data!)
Any help or valuable insights on how to proceed after this would be greatly appreciated!!!
Thank You !