[G14_run] G14_run Digest, Vol 142, Issue 6
Tsuneo Kageya
kageya at jlab.org
Fri Jul 21 14:26:20 EDT 2023
Hi Haiyun,
I am wondering that you are plotting Sigma phi distributions instead of G on Fig. 39-43.
For example, if you compare distributions of Fig. 37 with 42, they seem to be behaving similarly although the scales are different.
Especially, 8th phi distributions of Fig.37 and 42 are behaving closely too much; they look like each other for me.
I am checking the most recent version written on July 21st.
Can you check them again ?
Regards, Tsuneo Kageya.
On 7/21/23, 12:55 PM, "G14_run on behalf of g14_run-request at jlab.org" <g14_run-bounces at jlab.org on behalf of g14_run-request at jlab.org> wrote:
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Today's Topics:
1. [EXTERNAL] Re: g14 meeting report on G extraction for pi- p
photoproduction on the neutron (Haiyun Lu)
----------------------------------------------------------------------
Message: 1
Date: Fri, 21 Jul 2023 12:54:39 -0400
From: Haiyun Lu <haiyun.lu at gmail.com>
To: "Annalisa D'Angelo" <annalisa.dangelo at roma2.infn.it>
Cc: Tsuneo Kageya <kageya at jlab.org>, g14 run <g14_run at jlab.org>
Subject: [G14_run] [EXTERNAL] Re: g14 meeting report on G extraction
for pi- p photoproduction on the neutron
Message-ID:
<CAHvN38LJbw25yp3Af+QVf+zYW4yHcy0_2A4aFCWrKsiQWfGucw at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Dear Annalisa,
I finally addressed all the comments in the email. Sorry it took much
longer than expected.
Here are the updated:
1. The captions of two figures are fixed
2. All text-related comments
3. Performed systematic study of the sigma "leaking" into G distribution. A
new appendix is added to the notes with all the fits by two new terms. The
differences from the two fit functions are calculated and fitted with a
Guassian function. The standard deviation is used as the uncertainty.
This part is moved from "conclusion" to "Systematic uncertainty of beam
polarization".
4. Summary of systematics is updated
5. Final results of G is updated with new systematic uncertainties
What is required is plotting the final results compared with model
predictions.
There is a comment in the notes asking for the above figures with
x-coordinates in cos(theta) instead of theta in the current figures. The
argument is that all the work was done by binning in cos(theta) but the
final results are shown in theta.
Could Igor please change the x-coordinate when plotting the comparison?
Otherwise, I think the note is complete.
PS, Tsuneo has doubts on the phi distribution that some similar
distributions are at different angles. I double checked it and found no
mistake. If they are not identical, this similar behavior must come from
the data.
Thanks,
Haiyun
On Mon, Jul 3, 2023 at 4:39?AM Annalisa D'Angelo <
annalisa.dangelo at roma2.infn.it> wrote:
> Dear Haiyun,
>
> thank you for your hard work. The final version of the analysis note is
> very good shape and shows the accuracy of your analysis.
>
> While a detailed study of systematic errors related to the event yields
> and to beam and target polarizations has been performed, the accuracy of
> the extraction of the G asymmetry values still needs some assessment, as
> shown from the variation of results obtained for the bins that you have
> re-fitted.
>
> G is the main outcome of this work and we should be 100% sure of the final
> results.
>
> The main problem lays in the fact that many plots of figures from 38 to 42
> show an overall offset and an additional underlying cos 2phi structure.
> This points to the fact that the de-coupling of Sigma and G obtained from
> equations 3 and 4 is not 100% effective.
>
> The new figures 43, 44 and 45, show that the p0 parameter, which we
> understand corresponds to the extracted G value, changes in sign and
> strength (up to a factor 10 from 0.01 to 0.1), but fortunately the
> variation is compatible with the high statistical error associated to the
> p0 parameter error.
>
> This topic has been discussed among Mike, Tsuneo and myself during lat g14
> meeting. As a result we would suggest to:
>
> - perform a systematic study of the variation of the p0 parameter fitting
> ALL the distributions of figures from 38 to 42 using both i) the G sin 2phi
> function ii) the G sin2phi + a cos 2phi +c
>
> function as you did for the figures 43, 44 and 45;
>
> - use the results obtained for G for the two procedures to assess the
> systematic error due to the residual coupling of Sigma and G contributions,
> and add them to the systematic error table for G.
>
>
> There are some other minor observation I would like to mention in the
> following:
>
> - you name the appendixes just A, B, C. I would suggest naming a quoting
> them as Appendix A, Appendix B etc.
>
> - you have interchanged the symbol for the double polarization asymmetry
> between g, G and |G (Capital G with an additional internal vertical line in
> the symbol).
>
> In particular g is used when the observable is extracted from the fit,
> while G is often used as a simplified version of G and "|G". I would
> suggest using G everywhere, including in the title.
>
> - figure 28 at page 26 is still missing figure labels
>
> - figure 29 a at page 27 has wrong figure label.
>
> - coefficients a,c in the captions of figures 43,44 and 45 are fit
> parameters, not constants.
>
> - the captions of figures 43, 44 and 45 show more theta angles than those
> appearing in the plots. We would suggest to replace those figures, and the
> ones from 38 to 42, with the ones comparing the two fits mentioned above,
> including all energies and angles;
>
> - at page 29 the sentence:
>
> "The fitting quality is qualitatively denoted by "Prob" in the figures"
>
> Should be substituted by something like:
>
> "The fitting quality is expressed by the probability ("Prob") of
> obtaining a higher value for the reduced Chi-2 variable, as shown in the
> figures upper boxes"
>
> Should you agree on performing the fits, the text and the result should be
> updated accordingly.
>
>
> Thank you for your patience and attention
>
> All the best
>
> Annalisa
>
>
>
> Il 20/06/23 05:10, Haiyun Lu ha scritto:
>
> I finished studying the fit behavior of some G fits. Basically, additional
> cos(2phi) and constant terms are added to represent leaked Sigma. The
> appendix B, fitting Sigma and G, is updated with additional fits. A
> paragraph is added in conclusion to explain this, and final values are
> updated accordingly.
> It should be complete now.
>
> On Sun, Jun 4, 2023 at 8:45?PM Haiyun Lu <haiyun.lu at gmail.com> wrote:
>
>> I finished integrating all the comments into the note at overleaf. It is
>> ready for a final-round review before submitting to CLAS review.
>> There are some touches needed for figures and I will update them while it
>> is reviewed.
>>
>> Thanks,
>> Haiyun
>>
>> On Fri, Apr 21, 2023 at 9:33?AM Igor Strakovsky <igor at gwu.edu> wrote:
>>
>>> Hi Andy,
>>>
>>> Actually, MAID web does not report what data they are using. Anyway, I
>>> am sending Victor
>>> all the data which SAID has (including updates). So, please be sure that
>>> MAID results is up
>>> to date
>>>
>>> Cheers, Igor
>>>
>>> -----
>>> Igor Strakovsky, SAID INS The George Washington University
>>> VSTC: 571-553-8344, Cell: 703-728-5627, Skype: igors1945_2
>>> Emails: igor at gwu.edu, igor at jlab.org
>>>
>>>
>>> On Thu, Apr 20, 2023 at 1:09?PM Andy Sandorfi <sandorfi at jlab.org> wrote:
>>>
>>>> Hi Igor,
>>>>
>>>> Can you check if Victor is able to make a statement such as, ?the MAID
>>>> PWA includes all available data up to year XXXX? ?
>>>>
>>>>
>>>>
>>>> Andy
>>>>
>>>>
>>>>
>>>> *From: *Igor Strakovsky <igor at gwu.edu>
>>>> *Date: *Thursday, April 20, 2023 at 12:56 PM
>>>> *To: *Andy Sandorfi <sandorfi at jlab.org>
>>>> *Cc: *Annalisa D'Angelo <annalisa.dangelo at roma2.infn.it>, g14 run <
>>>> g14_run at jlab.org>, haiyun.lu at gmail.com <haiyun.lu at gmail.com>, Tsuneo
>>>> Kageya <kageya at jlab.org>
>>>> *Subject: *[EXTERNAL] Re: [G14_run] MAID
>>>>
>>>> Hi Andy,
>>>>
>>>>
>>>>
>>>> The situation with MAID is not really simple. There is one retired
>>>> person, Victor, whois still active. Ostrick and Denig told me that they do
>>>> not have interest/resources in supporting MAID. But Victor gave MAID
>>>> predictions upon my request. My hope is that he will be a co-author of the
>>>> coming g14 paper
>>>>
>>>>
>>>>
>>>> Cheers, Igor
>>>>
>>>>
>>>> -----
>>>>
>>>> Igor Strakovsky, SAID INS The George Washington University
>>>>
>>>> VSTC: 571-553-8344, Cell: 703-728-5627, Skype: igors1945_2
>>>>
>>>> Emails: igor at gwu.edu, igor at jlab.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, Apr 20, 2023 at 12:10?PM Andy Sandorfi via G14_run <
>>>> g14_run at jlab.org> wrote:
>>>>
>>>> Hi Annalisa,
>>>>
>>>> Please verify with Igor, but I believe that MAID has not been updated
>>>> in years. It?s OK to show the MAID predictions with the g14 data in a
>>>> paper, but one should include a statement about when that PWA was last
>>>> updated.
>>>>
>>>>
>>>>
>>>> Andy
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From: *G14_run <g14_run-bounces at jlab.org> on behalf of Annalisa
>>>> D'Angelo via G14_run <g14_run at jlab.org>
>>>> *Date: *Thursday, April 20, 2023 at 8:57 AM
>>>> *To: *g14 run <g14_run at jlab.org>, haiyun.lu at gmail.com <
>>>> haiyun.lu at gmail.com>, Tsuneo Kageya <kageya at jlab.org>
>>>> *Subject: *[G14_run] Fwd: [EXTERNAL] MAID
>>>>
>>>> Dear All,
>>>>
>>>> I am forwarding to you the prediction from MAID, kindly provided buy
>>>> Igor, for the Sigma and G observables in pi-p photoproduction.
>>>>
>>>> All the best
>>>>
>>>> Annalisa
>>>>
>>>>
>>>>
>>>> -------- Messaggio Inoltrato --------
>>>>
>>>> *Oggetto: *
>>>>
>>>> Re: [EXTERNAL] MAID
>>>>
>>>> *Data: *
>>>>
>>>> Fri, 14 Apr 2023 09:09:02 -0400
>>>>
>>>> *Mittente: *
>>>>
>>>> Igor Strakovsky <igor at gwu.edu> <igor at gwu.edu>
>>>>
>>>> *Rispondi-a: *
>>>>
>>>> igor at gwu.edu
>>>>
>>>> *A: *
>>>>
>>>> Annalisa D'Angelo <annalisa at jlab.org> <annalisa at jlab.org>, Franz Klein
>>>> <fklein at jlab.org> <fklein at jlab.org>, Annalisa D'Angelo
>>>> <annalisa.dangelo at roma2.infn.it> <annalisa.dangelo at roma2.infn.it>
>>>>
>>>>
>>>>
>>>> Dear Annalisa,
>>>>
>>>>
>>>>
>>>> Thanks
>>>>
>>>>
>>>>
>>>> You too, Have a nice weekend,
>>>>
>>>> Igor
>>>>
>>>>
>>>>
>>>> ps: Please find attached MAID predictions for Sigma and G for gn-->pi-p
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> -----
>>>>
>>>> Igor Strakovsky, SAID INS The George Washington University
>>>>
>>>> VSTC: 571-553-8344, Cell: 703-728-5627, Skype: igors1945_2
>>>>
>>>> Emails: igor at gwu.edu, igor at jlab.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Fri, Apr 14, 2023 at 9:04?AM Annalisa D'Angelo <annalisa at jlab.org>
>>>> wrote:
>>>>
>>>> Dear Igor,
>>>>
>>>> thank you! See you on Monday. Have a nice week-end.
>>>>
>>>> Annalisa
>>>>
>>>> Il 14/04/23 15:01, Igor Strakovsky ha scritto:
>>>>
>>>> Dear Annalisa,
>>>>
>>>>
>>>>
>>>> Monday, 10am works for me
>>>>
>>>>
>>>>
>>>> We can use Zoom: https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1619984443&d=DwIFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=5LSWsFN5KweowPCsdwCuT6TNyYmHKJ3RcKK8qa-oO-g&m=18FsYJzNhdK46u0Q3kGx6QaApGTGs4vmKqqqMQl5naye9zrvFRwNHSfCaJSlPQjP&s=PtGvmi_8kQdHnAPOLN1QRmHLYgjtT-WI0PGmMzGtjok&e=
>>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1615438135-3Fpwd-3Dbm8xdmY0dytXeUtWV1ZEN2NVdVppdz09&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=QDJbiECzfxNvPOYgSWghomOgImTBYIv1HgeGmNQ96o8&m=yAkhnpgy_6dw2nLM9lufdlr3UgnIGNdNV_T94FyAVb-lZakk5NgNMx5ooxvwMiAp&s=GCGcJed3poThbLq2pM9SXPInBAiRh2yKP3-U0AIY2e4&e=>
>>>>
>>>>
>>>>
>>>> Or any alternative
>>>>
>>>>
>>>>
>>>> Cheers, Igor
>>>>
>>>>
>>>> -----
>>>>
>>>> Igor Strakovsky, SAID INS The George Washington University
>>>>
>>>> VSTC: 571-553-8344, Cell: 703-728-5627, Skype: igors1945_2
>>>>
>>>> Emails: igor at gwu.edu, igor at jlab.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Fri, Apr 14, 2023 at 8:52?AM Annalisa D'Angelo <annalisa at jlab.org>
>>>> wrote:
>>>>
>>>> Dear Igor,
>>>>
>>>> what about Monday april 17 at 10:00 am Jlab time?
>>>>
>>>> Annalisa
>>>>
>>>> Il 13/04/23 16:36, Igor Strakovsky ha scritto:
>>>>
>>>> Hi Annalisa,
>>>>
>>>>
>>>>
>>>> Can we talk about ReggeMAID someday by Zoom or Skype?
>>>>
>>>>
>>>>
>>>> Thanks, Igor
>>>>
>>>>
>>>>
>>>>
>>>> -----
>>>>
>>>> Igor Strakovsky, SAID INS The George Washington University
>>>>
>>>> VSTC: 571-553-8344, Cell: 703-728-5627, Skype: igors1945_2
>>>>
>>>> Emails: igor at gwu.edu, igor at jlab.org
>>>>
>>>> --
>>>>
>>>> ================================================
>>>>
>>>> Prof. Annalisa D'Angelo
>>>>
>>>> Dip. Fisica, Universita' di Roma "Tor Vergata"
>>>>
>>>> Istituto Nazionale di Fisica Nucleare
>>>>
>>>> Sezione di Roma Tor Vergata, Rome Italy
>>>>
>>>> email:annalisa.dangelo at roma2.infn.it
>>>>
>>>> Jefferson Laboratory, Newport News, VA USA
>>>>
>>>> Email: annalisa at jlab.org
>>>>
>>>> Tel: + 39 06 72594562
>>>>
>>>> --
>>>>
>>>> ================================================
>>>>
>>>> Prof. Annalisa D'Angelo
>>>>
>>>> Dip. Fisica, Universita' di Roma "Tor Vergata"
>>>>
>>>> Istituto Nazionale di Fisica Nucleare
>>>>
>>>> Sezione di Roma Tor Vergata, Rome Italy
>>>>
>>>> email:annalisa.dangelo at roma2.infn.it
>>>>
>>>> Jefferson Laboratory, Newport News, VA USA
>>>>
>>>> Email: annalisa at jlab.org
>>>>
>>>> Tel: + 39 06 72594562
>>>>
>>>> _______________________________________________
>>>> G14_run mailing list
>>>> G14_run at jlab.org
>>>> https://mailman.jlab.org/mailman/listinfo/g14_run
>>>>
>>>> --
> ================================================
> Prof. Annalisa D'Angelo
> Dip. Fisica, Universita' di Roma "Tor Vergata"
> Istituto Nazionale di Fisica Nucleare
> Sezione di Roma Tor Vergata, Rome Italyemail:annalisa.dangelo at roma2.infn.it
> Jefferson Laboratory, Newport News, VA USA
> Email: annalisa at jlab.org
> Tel: + 39 06 72594562
>
>
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