[Theory-seminars] Cake Seminar Tomorrow - Kiminad Mamo

[Caroline Silva Rocha Costa]

Dear all,

Tomorrow, February 19th, at 1:PM, we will have Kiminad Mamo of Jlab and William and Mary giving a cake seminar in room F326-327. Please, join us for his seminar and some cake. See below for title and abstract of his talk.

Speaker: Kiminad Mamo (Jlab/William & Mary) F326-327

Title: Witten diagrams in AdS/QCD with applications to scattering amplitudes and GPD moment parametrization

Abstract: In this talk, we discuss Witten diagrams set within the framework of a soft-wall anti-de Sitter (AdS) background. This setting is particularly chosen for its capacity to naturally incorporate the phenomenon of linear confinement through the underlying five-dimensional geometric structure. By leveraging the Witten diagrams, our discussion spans the computation of a variety of quantum chromodynamics (QCD) correlation functions. These functions serve as a cornerstone for extracting a range of form factors for hadrons, encompassing spin-0, spin-1, and spin-2, and extending to a generalized framework for spin-j form factors. A significant portion of our discussion is dedicated to demonstrating how holographic scattering amplitudes for both inclusive and exclusive processes in QCD can be succinctly described using the spin-j form factors. These form factors share the same large Nc (number of colors) dependence as one finds in QCD scattering amplitudes using the collinear factorization theorem. Importantly, this correspondence holds true when these amplitudes are expressed in terms of the conformal moments of the Generalized Parton Distributions (GPDs). A noteworthy characteristic of the spin-j form factors, akin to the conformal moments of GPDs, is their polynomial dependency on the skewness parameter, eta. This particular trait positions them as ideal candidates for the reconstruction of GPDs through the generalized method of inverse Mellin transform or Mellin-Barnes integrals.


Best regards,
Caroline, Joe & Zheng-Yang
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