OPT-IN: Beam-Target Helicity Asymmetry E in K+룉 Photoproduction on the Neutron

[Reinhard Schumacher]

Dear Nick, et al.,

Here are my comments on the "Beam-Target Helicity Asymmetry E in
K+Sigma- Photoproduction in the Neutron" paper.

First of all, congratulations on getting the tremendous amount of work
done on this channel to converge to this fine paper.    I think it
will have real impact.   In fact, given the the Bonn Gatchina people
have already "digested" the results, we see that this measurement has
been worthwhile.

Here are some small recommendations:

Fig 1 caption:  replace "three-dimensional" with "perspective", which
is closer to what you want to express

Line 199, Fig.2 caption, and Reference 40:  It is confusing that you use
the letter "X" for both missing items.  They are not the same thing.
I suggest replacing "X" with "Y" when the missing this has to be a
hyperon.   For instance, if the Fig. 2 caption, line 1, replace "X" by
"Y", but leave the "X" alone in line 2.  There may be a few other
places to make this change.

Line 220:  It is surprisng that only 50% of the true yield is left.
Why so little?   Fig 2 is a log-z plot, and from it I might guess
you keep much more than 50%.   Can this be explained better?    Do you 
really have to throw so much away?

Line 331:  It seems awkward to introduce Fig. 5 within a parenthetic
statement.   I suggest removing the parentheses and making the
statement a stand-alone sentence.

Fig. 5 caption:  "...dashed red full lines..." ??   Also, the blue
lines do not look dotted to me on a regular screen or on paper
(unless I look very closely).

Page 6, column 2, line 6:  "missinG"

Good luck with this paper.

Reinhard