<div dir="ltr">DEar Peter,<div><br></div><div>Let me answer</div><div><br></div><div>1) You have to point out that you collected data on bound neutron</div><div><br></div><div>2) Up to you but I was thinking that is important to give CLAS credit specifically that CLAS deserves</div><div>that</div><div><br></div><div>4) </div><div><div> PI-P NORMALIZED Chi2 SUMMARY 2/28/16 for:</div><div> EPPI0P108 8/08/07 RAA WORLD+CLAS+BONN 08/17/12 add 17375/14772</div><div> Q2min= 0.000 Q2max= 7.000</div><div> Sol1-SM08K 2000 WN08(53013/25253)+162774/107078(188) JO07(0) SM05 2</div><div><br></div><div> SR TYPE Nexp Ndta Emn Emx Q2mn Q2mx Amn Amx Ch1 </div><div> GA(01) DL 2 2 1150 1600 0.40 0.40 3.6 3.7 10. 10.</div><div> WR(81) DSG 297 297 1253 1705 0.47 0.54 6.0 74.6 753. </div><div> MO(79) DSG 20 20 1285 1675 0.96 1.13 12.6 14.4 49. </div><div> MO(78) DSG 20 20 1285 1705 0.46 0.56 12.6 14.5 46. .</div><div> VA(88) DSG 448 448 1255 1655 0.97 1.14 8.5 84.2 1009. </div><div> BB(76) DSG 8 8 1669 1980 1.25 1.35 10.5 31.4 16. </div><div> BB(78) DSG 4 4 1941 1984 1.31 1.37 13.2 22.1 0. </div><div> GA(01) DT 2 2 1150 1600 0.40 0.40 3.6 3.7 0. </div><div><br></div><div> Nexp= 801 Ndata= 801 ChN(1)= 1883.9</div><div> ChU(1)= 1883.9<br></div></div><div><br></div><div>GA(01): GASKELL, PRL87, 202301(2001)</div><div>WR(81): WRIGHT, NPB181, 403(1981)</div><div>MO(79): MORRIS, PLB86, 211(1979)</div><div>MO(78): MORRIS, PLB73, 495(1978)</div><div>VA(88): VARENIKOVA, ZPC37, 251(1988)</div><div>BB(76): BEBEK, PRD13, 25(1976)</div><div>BB(78): BEBEK, PRD17, 1693(1978)</div><div><br></div><div>7) As far as I suggested, it is good to add SAID predictions</div><div><br></div><div>Have a nice weekend, Igor</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>-----</div><div>Igor Strakovsky, SAID INS The George Washington University</div><div>Tel: 571-553-8344,Skype: igors1945_2, Fax: 202-994-3001</div><div>Cell: 703-728-5627, Emails: <a href="mailto:igor@gwu.edu" target="_blank">igor@gwu.edu</a>, <a href="mailto:igor@jlab.org" target="_blank">igor@jlab.org</a></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Sun, Feb 28, 2016 at 3:24 PM, <span dir="ltr"><<a href="mailto:bosted@jlab.org" target="_blank">bosted@jlab.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Igor,<br>
That is really impressive work. I have several comments and suggestions<br>
for your<br>
consideration...<br>
<br>
1) Abstract: You do not have en-->epi-p data. You did not collect data on<br>
free but bound neutron. One cannot possible to measure pionEPR on the<br>
"neutron" target you have to take into account FSI corrections to convert<br>
ed-->epi-pp into en-->epi-p. There are no FSI calculations for pionEPR.<br>
FSI for asymmetries could be small but<br>
still unknown. CHANGED to "...kinematic bins<br>
for $\pi^+$ and 35,000 bins for $\pi^-$ production."<br>
<br>
2) Abstract: Most of "previous world data" are CLAS measurements<br>
(according to the SAID database - CLAS collected about 85% of the world<br>
database) and I would punch this fact. NOT DONE (doesn't seem appropriate<br>
to me).<br>
<br>
3) Abstract: I do not think that last phrase is necessary here. No<br>
resonance couplings are presenting in the manuscript. CHANGED to<br>
"When combined with cross section measurements,<br>
the present results will provide powerful constraints<br>
on nucleon resonance amplitudes at moderate and large<br>
values of $Q^2$, for resonances with masses as high as 2.3 GeV."<br>
<br>
4) line 16: your list of pi- measurements is uncompleted, check the SAID<br>
database which has all available data. I cannot seem to get there: when I<br>
click on "data Base" on<br>
<a href="http://gwdac.phys.gwu.edu/analysis/epr_analysis.html" rel="noreferrer" target="_blank">http://gwdac.phys.gwu.edu/analysis/epr_analysis.html</a><br>
nothing happens. Can you send any pi- reference you consider essentail.<br>
Meanwhile, I've change to say "references include..."<br>
<br>
5) line 45: I am not sure that one can possible to prove that your<br>
treatment for en-->epi-p is good enough. We published several PRC papers<br>
for pionPR analyses which allows to get gn-->pi-p from CLAS (g10) and<br>
MAMI-B gd-->pi-pp measurements. inSpire can give you appropriate refs.<br>
ANSWER: Text has been changed to be very<br>
careful to say that we present measured asymmetries on deuteron target. No<br>
neutron response functions are extracted in this paper.<br>
<br>
6) line 143: How is about a neutron-detection efficiency? How your took<br>
it into account? ANSWER: There is no need to account for any efficiencies<br>
in asymmetry measurements (the efficiency cancels in the ratio)<br>
<br>
Let me suggest to add more curves to your data-plots using EBAC and SAID<br>
predictions which will obviously benefit this manuscript.<br>
ANSWER: The JANR fit is from the EBAC group (Inna). I tried using SAID but<br>
ran into difficulties, and decided two curves were enough to illustrate<br>
the point that new fits are needed now that we have more data.<br>
<br>
BTW I am not sure if I am familiar with JANR treatment but MAID07 does not<br>
fit available g*n-->pi-p data (they used some relationships between p and<br>
n targets) ANSWER: Inna (JANR) did not consider pi- production. She only<br>
does<br>
pi+ and pi0.<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
</blockquote></div><br></div>