[Hadstruct] Minutes....

[David Richards]

Updates to the Analysis

CM looked at the local matrix element for normalization of Gluon PDF. Perturbative matching already exists in the literature.

RS has looked at the unpolarized distribution up to momentum 6 - TK had generated data up to Wilson flow of 4.

CE showed his fits to the ITD, using both the cos transform and the one-stage fit including the kernel. There was a lot of discussion as to the influence of the large Ioffe time on the fit, and also the influence of the large-z/small-p vs large-p/small-z data; the former, more precise data has potentially large higher-twist effects. So a way of modeling the high-twist effects, and comparing data with the same IT but different z's might be useful.

RS looked at the influence of the Ioffe time distribution on alpha, keeping beta fixed, and the extent to which we may be able to employ "modeling". KO noted AR had indeed a picture of the higher-twist contributions. NK had looked at p_z = 0 to focus on higher-twist effects, where the operator was multiplicatively renormalizable.

<https://github.com/JeffersonLab/HadStruc/wiki/Minutes-of-18th-August,-2020#aob>AOB

CM was writing a letter of interest for Snowmass, and circulated a link to the GPD meeting for Wednesday 19th, where Jianwei would be speaking.

RS arranged the LCS reply discussion for Wednesday 19th at 9am

<https://github.com/JeffersonLab/HadStruc/wiki/Minutes-of-18th-August,-2020#next-meeting>NEXT MEETING
9am Wednesday 26th August.

<https://github.com/JeffersonLab/HadStruc/wiki/_new?wiki%5Bname%5D=_Footer>
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