Error correlation in simultaneous fit

Dear all,

I have a simple question for simultaneous 1D fit. I use the common p.d.f to fit the same invariant mass distribution in different momentum bins. Are the errors in these momentum bins related?

I’m not sure to have understood exactly your question.
You have many mass invariant distribution histograms but each one of these distribution came from different momentum range? What are you doing is fitting all this different histogram with the same p.d.f.?

If the answer is yes to both the questions, the errors are not correlated because the histograms came from different distributions.

If instead I haven’t understood your question I will very pleased to answer to you if you can give me more details.


I’m very sorry to reply you so late and thank you very much for your help.

I think your understanding is right. Based on your suggestion, I think the errors are not correlated.


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