[Hadstruct] [EXTERNAL] LaMET2020 abstracts

[Joseph Karpie]

No the previous abstracts do not carry over. Everyone who still wants to
speak must resubmit.

On Thu, Aug 13, 2020 at 3:45 PM David Richards <dgr at jlab.org> wrote:

> Hi Chris and Joe,
>
> These (ie Chris I and Joe’s) both look good.  Do you know whether the
> January abstracts carry forward?
>
> David
>
> PS I wasn’t going to submit one...
>
> On Aug 13, 2020, at 4:38 PM, Monahan, Christopher <cjmonahan at wm.edu>
> wrote:
>
> Hi all
>
> Joe, thank you for suggesting this. My abstract, submitted a few days ago,
> is
>
> Connecting quasi and pseudo distributions in nongauge theories
>
> "I explore the explicit relationship between the LaMET and pseudo-PDF
> approaches to collinear hadron structure in the context of a scalar theory,
> and demonstrate explicitly their equivalence at one loop in perturbation
> theory. Scalar field theory removes complications associated with gauge
> theories that enable complete calculations of all quantities, such as the
> Ioffe-time distribution at arbitrary field separation, and demonstrate
> explicitly their interrelationships. This provides the ideal playground for
> analysing and clarifying the main features of both quasi- and pseudo-PDFs."
>
> Apparently I was so on top of things back in January that this is actually
> the second abstract I submitted. I had forgotten about the first (I mean
> it's not like anything major has happened since January 29th), and it is
>
> Finite volume effects for extended operators, vol. 2
>
> "Lattice determinations of parton distribution functions are now
> sufficiently mature that a proper accounting of systematic uncertainties is
> necessary for further progress. These determinations generally rely on
> nonperturbative calculations of matrix elements of spatially-extended
> operators, which may have enhanced finite volume effects relative to matrix
> elements of local operators. I present a dispersive technique for
> determining finite-volume effects associated with spatially-separated
> current operators. This framework would enable nonperturbative removal of
> the dominant finite volume effects given previously-determined lattice form
> factors. In this work we focus on the implications for the matrix elements
> of the pion, but the framework may be generalized to other states."
>
> Regards,
> Chris
>
> ---
>
> Chris Monahan
> Pronouns: he/his
> Assistant Professor
> Department of Physics
> William & Mary
> ------------------------------
> *From:* Hadstruct <hadstruct-bounces at jlab.org> on behalf of Joseph Karpie
> <jkarpie at gmail.com>
> *Sent:* 13 August 2020 16:26
> *To:* hadstruct at jlab.org <hadstruct at jlab.org>
> *Subject:* [Hadstruct] [EXTERNAL] LaMET2020 abstracts
>
> Hey everyone,
>
> Since we only have a few days left, I'd like to try to organize our
> abstracts for LaMET 2020 those who haven't sent them in already. Since
> there are a limited number of talks, we decided we should send in a number
> of abstracts and make them reject us. I figure if we try to make our
> abstracts overlap as little as possible, it will remove the excuse of
> repetition they could use to reject us off hand. Below is what I will send
> in. Can everyone who is thinking of sending in abstracts copy theirs so we
> can think about what to focus on?
>
> Below is my abstract where I plan to highlight the pseudo-PDF method and
> our latest results. I plan on discussing its distinctions from LaMET, but
> don't want that in the abstract as to not draw unnecessary ire. I've also
> pasted a link to my AP Latt talk which will be a basis for my slides.
> Please send me any comments on my abstract or slides.
>
> Best,
> Joe
>
> https://urldefense.proofpoint.com/v2/url?u=https-3A__conference-2Dindico.kek.jp_event_113_contributions_2114_&d=DwIFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=phC8jtUHUVIl1OXaA25HKnc5L16EvLwhrqx4rXYGPWA&m=65P0dc2zQVo5EZrDGX2Y2b7RceU9IKluOumCedvjvpo&s=H1-Hvtic6T_ErRu1doXYrLb-ci9-ITECyl4wvtDP05Y&e= 
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__conference-2Dindico.kek.jp_event_113_contributions_2114_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=phC8jtUHUVIl1OXaA25HKnc5L16EvLwhrqx4rXYGPWA&m=TGMha416R7BmOZMpXjw-2yH_zE6H5IzqLmrNh24zaY4&s=7ADZ15S4-hD9vzOCwQTUE2tXw5wF18i512VJga0A7gQ&e=>
>
> In this presentation, we focus on the pseudo-PDF method of calculating
> parton distributions. We use a Euclidean space matrix element, called the
> Ioffe-time pseudo distribution, and Short Distance Factorization, which
> allows data from all momenta to contribute in the analysis, to obtain
> parton distributions. We present the latest lattice results from the
> HadStruc collaboration, discuss several lattice systematics, discuss the
> inverse problem universal to PDF determinations, and perform a comparison
> with the pertinent phenomenological determinations.
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>
>
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