[Theory-seminars] Theory Seminar Tomorrow - Dennis Bollweg

[Caroline Silva Rocha Costa]

Dear all,

Tomorrow, at 1pm EDT, we will have a virtual seminar given by Dennis Bollweg of Brookhaven National Lab on the Zoom for Government link:

https://jlab-org.zoomgov.com/j/1607531692?pwd=eWJ1Wm13bE5FQXpoM0xRc3VuM2l4UT09

Please see below for the title and abstract.

Theory Seminar: June 24th, 1pm EDT (virtual)

Speaker: Dennis Bollweg (Brookhaven National Lab)

Title: Lattice QCD determination of the Collins-Soper Kernel from chiral quarks at physical masses

Abstract: In this talk, I will present our lattice QCD calculation of the rapidity anomalous dimension of transverse-momentum-dependent distributions (TMDs), i.e. the Collins-Soper kernel, via the recently proposed Coulomb-gauge-fixed quasi-TMD formalism.

This unitary lattice calculation is conducted using the domain wall fermion discretization scheme with a fine lattice spacing of about 0.08 fm and physical values for the light and strange quark masses. We determine the Collin-Soper kernel by analyzing the ratios of pion quasi-TMD wave functions at next-to-leading logarithmic perturbative accuracy. The Coulomb-gauge-fixed quasi-TMDWF demonstrates a significantly slower signal decay with increasing quark separations due to the absence of Wilson lines, allowing us to access the non-perturbative CS kernel up to transverse separations of 1 fm. I will compare our results with perturbative predictions at small transverse separations as well as phenomenological parametrizations of experimental data.

See you tomorrow.

Best regards,
Caroline, Joe, Zheng-Yang, and Gloria
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/theory-seminars/attachments/20240623/194b4aed/attachment.html>