[Clas12_dileptons] Release Note for Preliminary RG-B Results

[Richard Tyson]

Hi All,

As you may know, Patrick asked for results from RG-B that he can show at  the International Conference on Beauty, Charm, Hyperons in Hadronic Interactions (BEACH 2024)<https://indico.fnal.gov/event/62069/>. After speaking with Maxime, he asked me to produce a (short) release note. This is attached, any feedback is welcome.

Maxime asked me to present the note at the DWPG tomorrow. Sorry for the short notice in having a look over the note, I was also only asked to do this yesterday! I don't think there's anything especially new or controversial so please don't feel like you have to review this in a great amount of detail.

For convenience, I've attached the two main plots. First the cross section in AU for J/psi produced on proton and neutron. This has been updated with all three available RG-B datasets, and contains the same information as the previous plot that I circulated.

Second a comparison between RG-A, RG-B and Gluex. This is not intended for release, and is clearly marked as such in the plot and in the note. The reason why I included it in the note is that I assume one of the first questions I will get is on the consistency with RG-A. As my analysis is not as far along as Pierre's, and in order to make a sensible comparison to RG-A, I used the same radiative corrections and normalisation that Pierre extracted for the RG-A analysis. As you can see, there is a relatively good agreement between RG-A and RG-B which shows consistency between the analyses. I wasn't sure if this would be appropriate in the note, so please let me know if you think I should remove this and I will do so.

Thanks in advance for having a look over this and for your comments!

Cheers,
Richard
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/clas12_dileptons/attachments/20240522/0cc03232/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: RGB_Jpsi_Release_Note_Short.pdf
Type: application/pdf
Size: 715847 bytes
Desc: RGB_Jpsi_Release_Note_Short.pdf
URL: <https://mailman.jlab.org/pipermail/clas12_dileptons/attachments/20240522/0cc03232/attachment-0001.pdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: xSect.png
Type: image/png
Size: 147243 bytes
Desc: xSect.png
URL: <https://mailman.jlab.org/pipermail/clas12_dileptons/attachments/20240522/0cc03232/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: xSect_comp.png
Type: image/png
Size: 217798 bytes
Desc: xSect_comp.png
URL: <https://mailman.jlab.org/pipermail/clas12_dileptons/attachments/20240522/0cc03232/attachment-0003.png>