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Dear Daria,</div>
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Of course it is very important measurement. I just wanted to stress that the way to the GPD extraction is very long, a<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 14pt;">nd I am not sure that in this short presentation you will
show how to get GPDs both for u and d quarks from the measurement of asymmetry.</span></div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 14pt;">I have nothing agains what you wrote at the end of your mail. </span></div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 14pt;">Best regards,</span></div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 14pt;">Valery</span></div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 14pt;"><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size: 11pt;"><b>From:</b> Daria Sokhan <daria@jlab.org><br>
<b>Sent:</b> Thursday, January 28, 2021 04:57<br>
<b>To:</b> Valery Kubarovsky <vpk@jlab.org><br>
<b>Cc:</b> Marco Contalbrigo <mcontalb@fe.infn.it>; deeppwg@jlab.org <deeppwg@jlab.org><br>
<b>Subject:</b> Re: [Deeppwg] [EXTERNAL] Exclusive pi0 off neutron abstract for upcoming IoP conference</font>
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<div class="x_gmail_default">Dear Valery, </div>
<div class="x_gmail_default"><br>
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<div class="x_gmail_default">Are you objecting to the statement that this measurement is a contribution towards extracting GPDs, or their flavour separation? Of course it won't achieve it alone, but Paul is not claiming that. It's a step towards it, and will
form part of global analyses with other observables and other channels. </div>
<div class="x_gmail_default"><br>
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<div class="x_gmail_default">Mentioning transversity GPDs, which are the main interest, seemed too much detail for an abstract to what is a general Nuclear and Particle Physics conference (this is the UK equivalent of the DNP in the US, except we only have
two groups in the country who work on medium-energy hadron physics).<br>
</div>
<div class="x_gmail_default"><br>
</div>
<div class="x_gmail_default">What about a more general: </div>
<div class="x_gmail_default"><span style="font-family:Arial,Helvetica,sans-serif"><br>
</span></div>
<div class="x_gmail_default"><span style="font-family:Arial,Helvetica,sans-serif">"In this talk we present a preliminary extraction of the Beam-Spin Asymmetry of Hard Exclusive ð0-</span><span style="font-family:Arial,Helvetica,sans-serif">Production off neutrons
using a deuterium target with CLAS12 - a first-time measurement and </span><span style="font-family:Arial,Helvetica,sans-serif">exciting step in the study of nucleon structure."</span></div>
<div class="x_gmail_default"><span style="font-family:Arial,Helvetica,sans-serif"><br>
</span></div>
<div class="x_gmail_default">Thanks,</div>
<div class="x_gmail_default">Daria</div>
<div class="x_gmail_default"><br>
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<div dir="ltr" class="x_gmail_attr">On Wed, 27 Jan 2021 at 15:30, Valery Kubarovsky <<a href="mailto:vpk@jlab.org">vpk@jlab.org</a>> wrote:<br>
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Dear Paul and Daria,</div>
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In your abstract your wrote:</div>
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<br>
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<p style="margin:0px; font-style:normal; font-variant-caps:normal; font-weight:normal; font-stretch:normal; line-height:normal; font-family:Helvetica">
<span style="font-size: 14.4px; color: rgb(87, 6, 6);"> </span><span style="font-size: 16pt; color: rgb(87, 6, 6);">In this talk we present a preliminary extraction of the Beam-Spin Asymmetry of Hard Exclusive
</span><span style="font-size: 16pt; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; color: rgb(87, 6, 6);">ð</span><span style="font-size: 16pt; font-style: normal; font-variant-caps: normal; font-weight: normal; font-stretch: normal; line-height: normal; font-family: Helvetica; color: rgb(87, 6, 6);">0</span><span style="font-size: 16pt; color: rgb(87, 6, 6);">-</span></p>
<p style="font-size:12px; margin:0px; font-style:normal; font-variant-caps:normal; font-weight:normal; font-stretch:normal; line-height:normal; font-family:Helvetica">
<span style="font-size: 16pt; color: rgb(87, 6, 6);">Production off neutrons using a deuterium target with CLAS12 - a first-time measurement and</span></p>
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<span style="font-size: 16pt; color: rgb(87, 6, 6);">exciting step towards the flavour-separation of GPDs.</span></p>
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Could you please write in more details what are these excited steps towards the flavor separation of GPDs?</div>
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You are going to publish beam-spin asymmetry. How are you going to extract GPDs from asymmetry?</div>
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Pi0 out of neutron cross section was published by Hall-A.</div>
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Best regards,</div>
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Valery</div>
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<br>
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<div id="x_gmail-m_-1304058334217892217divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size: 11pt;"><b>From:</b> Deeppwg <<a href="mailto:deeppwg-bounces@jlab.org" target="_blank">deeppwg-bounces@jlab.org</a>> on behalf
of Marco Contalbrigo <<a href="mailto:mcontalb@fe.infn.it" target="_blank">mcontalb@fe.infn.it</a>><br>
<b>Sent:</b> Wednesday, January 27, 2021 10:14<br>
<b>To:</b> <a href="mailto:deeppwg@jlab.org" target="_blank">deeppwg@jlab.org</a> <<a href="mailto:deeppwg@jlab.org" target="_blank">deeppwg@jlab.org</a>><br>
<b>Subject:</b> [Deeppwg] [EXTERNAL] Exclusive pi0 off neutron abstract for upcoming IoP conference</font>
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<div>Dear all,<br>
attached is an abstract about exclusive pi0 production off neutron<br>
(deuteron) Paul and Daria intend to submit to the IoP conference.<br>
<br>
Preliminary results will be proposed for approval by DPWG in the<br>
next coming weeks.<br>
<br>
Comments and suggestions are welcome till Friday at noon EST.<br>
I apologize for the late notice.<br>
<br>
Best regards, Marco<br>
<br>
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