[Hybrid baryons] BSA uncertainties

[Viktor Mokeev]

Dear All,

In response to Volker comment I agree with, the next to the last string in my write up is the evaluation of the uncertainty of A. As I already showed, my and FFX expressions for A uncertainty are identical.

 Best Regards,
                              Victor
________________________________
From: Hybrid_baryons <hybrid_baryons-bounces at jlab.org> on behalf of Volker Burkert <burkert at jlab.org>
Sent: Friday, February 5, 2021 12:28 PM
To: hybrid_baryons at jlab.org <hybrid_baryons at jlab.org>
Subject: Re: [Hybrid baryons] BSA uncertainties

It is not good to evaluate dA/A because if A=0 then error always infinite. dA should be evaluated.
V.



On Feb 5, 2021, at 9:51 AM, Viktor Mokeev <mokeev at jlab.org<mailto:mokeev at jlab.org>> wrote:

Dear Colleagues,

Please find below the analytical evaluations for BSA uncertainties: a) the absolute uncertainty values \DeltaA (next to bottom string); b) relative \DeltaA/A values (bottom string)

As you may see, the relative DeltaA/A uncertainty is described by the product of two terms. The second (from left to right) term is proportional 1/sqrt(N+-N-), as FX mentioned. However, the first term 1/(N+-N-) inflates DeltaA/A values for A<0.1, which a typical values for the BSA in the N* region. For this reason, statistics matters, in particular in the resonance region where the statistics is much smaller in comparison with the DIS region.

  Best Regards,
                               Victor

________________________________
 From: Viktor Mokeev <mokeev at jlab.org<mailto:mokeev at jlab.org>>
Sent: Friday, February 5, 2021 9:38 AM
To: Viktor Mokeev <mokeev at jlab.org<mailto:mokeev at jlab.org>>
Subject:



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