[Clascomment] OPT-IN: Upper limits for the photoproduction cross section for the Phi--(1860) pentaquark state off the deuteron

[Hovanes Egiyan]

Dear Charles,

Thanks for your comments. There were discussions on the subject of the 
subject
of the accidental background during the  review. Eventually we decided 
not to include
plots in the paper to avoid confusion, all that such   background  does 
for  this
experiment is to somewhat reduce the
experimental sensitivity, which results in a higher upper limit for the 
cross sections.
Note that accidental coincidence events do not contribute to cascade 
peak or to
possible Phi-- peak. The event selection criteria for this analysis was 
chosen not to
be strict to minimize the uncertainty due to acceptance evaluation.

Regards,
         Hovanes.



On 08/18/2011 11:11 AM, Charles Hyde wrote:
> Given the high luminosity conditions of this experiment,
> it would seem useful to have some mention/plot of the contributions
> of accidental coincidencs in plots such as Fig 4, 5, 6.
> Also, there is no discussion of whether there are any additional
> background (i.e. non-target related) backgrounds to these figures.