RE: 1.9 GeV, Missprint (fwd)

 PDG 1998, non 1988

 ciao, s

---------- Forwarded message ----------
Date: Thu, 19 Dec 2002 12:46:53 -0500
From: V1357 <V1357@temple.edu>
To: Stefano Bianco <Stefano.Bianco@lnf.infn.it>
Subject: RE: 1.9 GeV, Missprint

I just noticed that I should have said those other expts are in the 1998
(NOT 1988) Review. Regards,  Jerry Franklin.
Also, there is an obvious misprint in my PL which says pp, rather than p-pbar
annihilation.  That paper was before LaTeX and I forgot to ink iin the bar.
>===== Original Message From Stefano Bianco <Stefano.Bianco@lnf.infn.it> =====
> Dear Jerry,
> thanks a lot for your input, I am looking up the reference you
> quoted and return to you very soon.
>    Cheers, stefano
>On Wed, 18 Dec 2002, V1357 wrote:
>> Dear Dr. Bianco:  I have just seen your ICHEP02 paper:
>> arXiv:hep-ex/0212028 showing a narrow resonance at 1.911+_.004 GeV.
>> I would like to suggest to you that this may be related to the narrow
>> resonance observed some time ago by a number of groups.
>> These experiments are listed on p. 436 of the 1988 PDG Review.
>> A large number of experiments observed this resonance, but because several
>> less sensitive ones did not, it has been generally discounted.
>> I analyzed the most sensitive of these experiments in
>> PLB (1987) 81, and found good evidence for the resonance at
>> 1937+- 1 MeV with a width less than 3 MeV.  You may want to consider the
>> possibility that this is related to your narrow structure.
>> Incidentally, I don't think the spin could be as low as 1--, because I 
>> see what would prevent a 1-- resonance from having a broad width to
>> two pion decay.  My educated guess is that a narrow resonance where you
>> observe it (whether on not it is related to the earlier observations)
>> would have a relatively high spin.
>> Please feel free to share this email with other members of E687 who
>> you think might find it of interest.  Best regards,  Jerry Franklin