Dear Tom,

it would be great if the talks could be listed as two separate 10 minute talks in the agenda. If that is not possible, here is a title + abstract for the combined talk:


Constraining the nuclear gluon and strange PDFs with heavy quark production and neutrino scattering

Nuclear parton distribution functions (nPDFs) of gluons and strange quarks have been the subject of many studies over the past years, since they are important for many processes and difficult to constrain. Two new analyses in the nCTEQ framework are presented to address these issues. The first takes a new look at neutrino DIS data which was previously excluded due to tensions with charged-lepton DIS and finds a subset of data that can safely be used to constrain the strange quark. The second analysis introduces heavy quark production data into the global fit using a data driven approach to constrain the gluon at x-values down to 10^-5.


Thanks,
Pit
 

On 17.03.22 11:41, Cridge, Tom wrote:
Dear Pit, Khoirul, Karol, Michael, Fred,

Thank you for your quick response to our request and for your understanding. Both of your abstracts are of course of significant interest to our working group and we recognise that their focus is somewhat different, albeit both within nCTEQ. Unfortunately as it stands, we are currently are only able to accept one nCTEQ talk (in the unlikely event this were to change, e.g. due to some cancellations, we can let you know), furthermore all talks are currently envisaged 20 minutes long. Therefore we would propose that we assign you one talk slot of 20 minutes and then how you wish to divide it between the two talks you can decide, e.g. perhaps you prefer two back-to-back 10 minute talks to cover the two abstracts, please let us know if this would work for you?

Thanks again for your understanding.

Tom (for WG1 conveners - Tom, Barak, Klaus)

From: Pit Duwentäster <p_duwe01@uni-muenster.de>
Sent: 16 March 2022 19:07
To: Cridge, Tom <t.cridge@ucl.ac.uk>; khoirul.muzakka@uni-muenster.de <khoirul.muzakka@uni-muenster.de>; karol.kovarik@uni-muenster.de <karol.kovarik@uni-muenster.de>; Michael Klasen <michael.klasen@uni-muenster.de>; Fred Olness <olness@smu.edu>
Cc: dis2022_wg1@igfae.usc.es <dis2022_wg1@igfae.usc.es>
Subject: Re: DIS2022 WG1 abstracts
 

⚠ Caution: External sender


Dear Tom, Barak, Klaus,

Thanks for your note, and we are pleased to hear of the considerable interest in this year's DIS workshop.
We briefly discussed the possibility of merging the "Heavy Quark" and "Neutrino" talks, but concluded this would be difficult as the topics are, in fact, quite separate and focus on very different data sets.
We've attached the cover pages of the current drafts (both papers will be on the ArXiV before the meeting) to highlight the contrasting objective of each.
The heavy quark study is led by Pit Duwentaester and Michael Klasen, and is looking at the heavy quark meson data from RHIC and LHC. This analysis provides new constraints on the gluon PDF in the small-x region. The output of this study is a new nCTEQ15HQ PDF set.
In contrast, the neutrino study (led by Khoirul Faiq Muzakkaand and Karol Kovarik) uses the results of the new nCTEQ15WZSIH PDFs, along with three independent compatibility criteria to definitively address the observed tensions between the DIS charged current and neutral current processes. The output of this study is a new nCTEQ15nu PDF set.
We certainly appreciate the limited time available for your working group. Therefore, if it might be possible to have two separate shorter talks, that would be much preferable for us. We could coordinate to eliminate any overlapping introductory material, thus enabling the speakers to adequately cover the core elements.

Thank you for your consideration,
Pit Duwentäster, Khoirul Faiq Muzakka, Karol Kovarik, Michael Klasen, Fred Olness


On 15.03.22 19:31, Cridge, Tom wrote:
Dear colleagues,

I am writing to you regarding your abstracts submitted to WG1: Structure Functions and Parton Densities at DIS2022 in Santiago de Compostela. As you may be aware, being one of the first in person conferences in a long time, we have received an extraordinary number of abstract submissions. As a result, we are writing to ask you if it might be possible to merge two of the abstracts submitted by yourselves on behalf of the nCTEQ collaboration into one talk. The abstracts we refer to are "Constraining the nuclear gluon PDF with heavy quark production data" (abstract number 19 submitted by Pit Duwentaester) and "nPDF Analysis with Neutrino DIS Data" (abstract number 50 submitted by Khoirul Faiq Muzakkaand and Karol Kovarik). Please let us know if this is would be fine for you as the authors as soon as possible and thanks in advance for your understanding.

Many thanks,

Tom Cridge on behalf of the WG1 conveners (Tom, Barak, Klaus)