[Clascomment] OPT-IN: Measurement of the Spin and Parity of the Lambda(1405)

[Daniel Carman]

					October 18, 2013


Kei and Reinhard,

I have read through your paper draft on the L(1405) spin/parity determination.
I think that this is in very good shape. I include my few comments below. Let
me know if you have any questions.


				      Regards,

				      Daniel

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Page 1.
 Line 56. Use "CLAS Collaboration".

Page 2.
 Line 115. What do you mean by "the production normal direction"?

Page 3.
 Line 148. Use "... choose the three forward-most ...".
 Line 157. Use "... based on the ...".
 Fig. 2 caption.
  Line 9. There are two occurrences of the invariant mass "M" in roman font
    that should be in math mode.

Page 4.
 Fig. 3 caption.
  Line 3. Missing units on W range.
 Line 229. Use "... parameters, it consistently ..."

Page 5.
 Table II. 
   General. You should state that the error bars listed here are statistical only.
   Caption line 1. Use "... in the $x-$, ...".
 Line 266. The two sentences starting in this line seem awkward to me. I would suggest:
  "If the $\Lambda(1405)$ is a state of $J^P=1/2^-$, then the polarization components in
   the production plane should be zero. Table II shows that the measured polarizations 
   components $Q_x$ and $Q_y$ are mostly consistent with zero within the statistical
   uncertainties."