[Primex] Tulio's reference?

[Ashot Gasparian]

  Dustin,

  This particular question about the proper reference to use in
  our pi0 article was already answered in several discussions
  and particularly by me (my Aug 27, Aug 29, and Aug 30 e-mails
  to the collaboration) and other PrimEx-I colleagues in the past
  two months.

  Since you are bringing this issue up again, I will briefly
  restate my arguments here one last time:

  1) In our pi0 PRL article we are referring to the description
     of general methods of calculations for the nuclear processes.
     In this  particular case the MCMC model which was partially
     used by you for your analysis. It is rightfully referred to
     the article from 2005 where the description of the MCMC method
     is given.  We are not referring to any "calculations" for any
     particular method used in our pi0 PRL paper, hope this is clear.
     However, just for everybody's interest, can you please explicitly
     point to any table which you have used from Tulio's 2010 paper
     which is not included in his 2005 paper?

     One more time, I repeat, the 0.3% uncertainty in our pi0 paper
     for the model dependence (which was the point of Tulio's
     contention in his Aug 30 e-mail) has nothing to do with Tulio's
     MCMC model or any of his particular results.

  2) Though the above arguments already answer to the question,
     however, I will repeat my other arguments (including those of
     other collaborators) against referring to Tulio's 2010 article.

     In his 2010 paper, Tulio combined essentially two articles into
     one.  One of them is the 2005 paper, to which we are referring,
     and the second one is from his 2008 paper about the eta-Primakoff
     (PRL 101, 012301, 2008).

     We have serious arguments about the scientific validity of the
     methods and the assumptions Tulio is using in his "results".
     These arguments are summarized in:

     arXiv:1004.0707 [nucl-ex]

     It would be incorrect to refer to a paper where there are very
     serious scientific issues and problems raised by a group of
     leading members in the collaboration.

   I  hope that this is the very last discussion on this particular
   matter, and you and others will allow rest of the collaboration
   to work on the ongoing difficult experiment without unnecessary
   distractions.

   Ashot


.............................................................
Ashot Gasparian                    Phone:(336)285-2112 (NC A&T)
Professor of Physics
Physics Department                       (757)-269-7914 JLab
NC A&T State University              Fax:(757)-269-6273 JLab
Greensboro, NC 27411               email: gasparan at jlab.org
.............................................................


On Fri, 8 Oct 2010, Dustin McNulty wrote:

> Dear Collaboration,
>
> I wanted to give my response to the issue of which of Tulio's references
> we should use in the publication.
>
> Throughout my analysis I have used Tulio's incoherent calculations.  As
> he has stated, his tables were changed several times since 2005 as he
> made new calculations.  In my final analysis I used his latest
> calculations.  As he has stated these latest calculations are reflected
> in his 2010 publication.  I therefore agree that his 2010 paper is the
> proper one that we should quote in our PRL article.
>
> Best Regards,
> Dustin
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