[Hybrid baryons] [clas12_rgk] [EXTERNAL] Re: Abstract for DNP

[Volker Burkert]

Hi Izzy,
   I like the abstract with Axel’s edits.
Volker



From: clas12_rgk <clas12_rgk-bounces at jlab.org> on behalf of Axel Schmidt via clas12_rgk <clas12_rgk at jlab.org>
Date: Wednesday, June 26, 2024 at 9:25 PM
To: igor at gwu.edu <igor at gwu.edu>
Cc: CLAS Hadron Spectroscopy <clas_hadron at jlab.org>, clas12 rgk <clas12_rgk at jlab.org>, hybrid baryons <hybrid_baryons at jlab.org>
Subject: Re: [clas12_rgk] [EXTERNAL] Re: Abstract for DNP
Hi Izzy,
Great abstract. Does the talk have a title?

If I can be helpful, the text:

The ηN final states, accessible only via isospin I = 1/2 resonances, provide a unique tool for studying nucleon excitations. By simplifying the analysis and enabling a cleaner extraction of resonance properties compared to the extensively studied πN final states, η electro-production offers a complementary approach.

could be condensed to:

The ηN final states, accessible only via isospin I = 1/2 resonances, provide a complimentary tool to the more extensively studied πN system for the extraction of resonance properties.

without much loss of information.

Best of luck,
Axel


On Jun 26, 2024, at 15:13, Igor Strakovsky via clas12_rgk <clas12_rgk at jlab.org> wrote:

The same fo me


On Wed, Jun 26, 2024 at 3:12 PM Bill Briscoe <briscoe at gwu.edu<mailto:briscoe at gwu.edu>> wrote:
Looks good to me

On Wed, Jun 26, 2024, 14:17 Izzy Illari <izzy at jlab.org<mailto:izzy at jlab.org>> wrote:
Dear RG-K Group and HSWG Members,
I hope this email finds you well. I'm writing to follow up on my previous communication regarding the abstract submission for the DNP.
Following feedback and adhering to the APS DNP guidelines, I have revised the abstract to meet the 1300 character limit. Please find the updated abstract below:
The exploration of nucleon structure and electromagnetic transitions from ground state to excited state is a cornerstone of nuclear physics research. Meson electro-production experiments have opened new avenues for investigating these phenomena, particularly in the 12 GeV era at Jefferson Lab with the CLAS12 spectrometer. The ηN final states, accessible only via isospin I = 1/2 resonances, provide a unique tool for studying nucleon excitations. By simplifying the analysis and enabling a cleaner extraction of resonance properties compared to the extensively studied πN final states, η electro-production offers a complementary approach. This work presents the first-ever measurement of the beam spin asymmetry (ALU) in exclusive η electroproduction, covering a previously unexplored kinematic region with 1.6 ≤ W ≤ 2.2 GeV. ALU is determined from the CLAS12 data using an analysis framework that considers the statistical limitations of the data set. Results are compared to theoretical models Jülich-Bonn-Washington and EtaMAID. ALU exhibits discrepancies with model predictions, highlighting the potential for refining theoretical descriptions of nucleon resonances and their electromagnetic couplings. These new results in a previously unmeasured kinematic region provide valuable input for future theoretical developments.
Thank you for your time and input. I appreciate any additional feedback or suggestions you may have on this revised version.
All the best,
Izzy
On Jun 25, 2024, at 7:04 PM, Bill Briscoe <briscoe at gwu.edu<mailto:briscoe at gwu.edu>> wrote:
An abstract submitted via the APS meeting page will cut off if the abstract is too long. This is too long. Please do a test run without submitting the abstract and prune it down.

Bb

On Tue, Jun 25, 2024, 19:00 Izzy Illari <iti2103 at gwmail.gwu.edu<mailto:iti2103 at gwmail.gwu.edu>> wrote:
Dear RG-K Group and HSWG Members,

I hope this email finds you well.

I have been encouraged by RG-K group to submit an abstract for the upcoming DNP October 7-10. The abstract is identical to the one I presented at the PWA/ATHOS conference in May, which has already been previously circulated to the HSWG.

For your convenience, I have copied the abstract again down below. The abstract submission deadline is 8 July 2024.

I would appreciate any feedback or suggestions you may have regarding the abstract.

Thank you and all the best,
Izzy

Exclusive $\eta$ Electro-Production Beam Spin Asymmetry Measurements using CLAS12 at Jefferson Lab

The exploration of nucleon structure and electromagnetic transitions from ground state to excited state is a cornerstone of nuclear physics research. Meson electro-production experiments have opened new avenues for investigating these phenomena, particularly in the 12 GeV era at Jefferson Lab with the CLAS12 spectrometer. The $\eta N$ final states, accessible only through isospin $I = 1/2$ resonances, provide a unique tool for studying nucleon excitations. By simplifying the analysis and enabling a cleaner extraction of resonance properties compared to the extensively studied $\pi N$ final states, $\eta$ electro-production offers a complementary approach to unraveling the structure of excited nucleons. This work presents the first-ever measurement of the beam spin asymmetry (BSA) in exclusive $\eta$ electro-production, covering a previously unexplored kinematic region with $1.6 \leq W \leq 2.2$ GeV. The BSA is extracted from the CLAS12 data using a comprehensive analysis framework that carefully considers the statistical limitations of the data set. The results are compared to predictions from theoretical models, such as the J"{u}lich-Bonn-Washington (JBW) and MAID, as well as compared to previously published cross-section and spin observable results from CLAS, and SLAC. Notably, the extracted BSA exhibits discrepancies with the model predictions, highlighting the potential for refining theoretical descriptions of nucleon resonances and their electromagnetic couplings through the incorporation of these new data. The high-precision data obtained in this previously unmeasured kinematic region now serve as valuable input for theorists to refine their models.

--
Izzy Illari
Pronouns: They/Them

M.Phil. in Physics | The George Washington University, 2022
Graduate Certificate in Data Science | The George Washington University, 2021
M.S. in Physics | The George Washington University, 2020
B.A. in Physics | Barnard College, Columbia University, 2017

GWU: iti2103 at gwmail.gwu.edu<mailto:iti2103 at gwmail.gwu.edu> | JLab: izzy at jlab.org<mailto:izzy at jlab.org>
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