[Nps] [EXTERNAL] NPS Open Mic contribution to QCD Town Meeting - Slides draft

[Tanja Horn]

Hi everyone,

Please see attached the draft slides for the Open Mic contribution at the
QCD Town Meeting. The presentation is scheduled for Saturday morning and
the slides should be uploaded on Friday by 9:00PM ET. Could you please take
a look and send me any thoughts and/or updated plots to illustrate our NPS
Science Program and future in the strongest possible way?

Thanks!

Best wishes,
Tanja

On Fri, Sep 16, 2022 at 11:15 AM Tanja Horn <hornt at jlab.org> wrote:

> Hi everyone,
>
> Following up our discussion from yesterday's meeting I list below a draft
> for an Open Mic contribution to the US Long Range Plan QCD Town meeting (
> https://urldefense.proofpoint.com/v2/url?u=https-3A__indico.mit.edu_event_538_&d=DwIBaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=GLZ1Uo9qDO03lszoD5gM3A&m=k4epBGlDc4v9k53hx_OwQKhRjHNyhjQw_wvaX9H5RxEWNm2PPG6jmSr8PJSvRFe3&s=U8Ym78ocNzGqAByxh7bhBEjuBRrHgj_xZdDEwYI6_W0&e=  ). The submission deadline is on
> September 19th. Please send any comments/suggestions etc. to my CUA email
> address: hornt at cua.edu (also listed in the CC line above).
>
> Thanks and best wishes,
> Tanja
>
> >>>>
> Contribution Title: The Neutral Particle Spectrometer Science Program in
> Hall C
>
> Abstract:
> The Neutral Particle Spectrometer (NPS) science program includes six fully
> approved experiments to date. The NPS was recently constructed by an
> international collaboration and will see its first series of experimental
> runs in 2023. It offers unique scientific capabilities pushing the energy
> scale for studies of the transverse spatial and momentum structure of the
> nucleon through reactions with neutral particles requiring precision and
> high luminosity. It enables precision measurements of the deeply-virtual
> Compton scattering cross section at different beam energies to extract the
> real part of the Compton form factor without any assumptions. It allows
> measurements to push the energy scale of real Compton scattering, the
> process of choice to explore factorization in a whole class of wide-angle
> processes, and its extension to neutral pion photo-production. It further
> makes possible measurements of the basic semi-inclusive neutral-pion cross
> section in a kinematical region where the QCD factorization scheme is
> expected to hold, which is crucial to validate the foundation of this
> cornerstone of 3D transverse momentum imaging. Further extensions of the
> NPS, including equipment upgrades, are under study to facilitate a
> worldwide unique program of precision measurements of Compton Scattering
> experiments, including time-like Compton scattering with a transverse
> polarized target to test the universality of GPDs and to obtain useful
> information to constrain them, in particular the GPD E, which is of
> considerable interest due to its relation with partonic angular momentum.
>
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