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Shohini Bhattacharya (University of Connecticut)6/23/26, 2:00 PMGPDs, TMDs, and Nucleon Tomography
Potential experimental signatures of generalized transverse momentum-dependent distributions (GTMDs) are proposed through exclusive pseudoscalar and heavy (axial-)vector meson production in lepton-proton collisions. Within the framework of collinear twist-3 factorization, we show that specific azimuthal-angle-dependent observables are sensitive to the quark and gluon GTMDs $F_{1,4}$ and...
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Andreas Metz (Temple University)6/23/26, 2:40 PMGPDs, TMDs, and Nucleon Tomography
Dihadron production in high-energy collisions is of significant interest in its own right and offers unique opportunities to study the partonic structure of the nucleon, particularly its transversity distributions. We will address the definition of dihadron fragmentation functions that depend on the invariant mass of the dihadron system, the extraction of the transversity distributions and...
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Edoardo Spezzano (University of Münster)6/23/26, 3:10 PMGPDs, TMDs, and Nucleon Tomography
The upcoming Electron-Ion Collider requires a high level of theoretical precision to fully map the spin structure of the nucleon. A critical component of this precision is the rigorous treatment of heavy-flavor contributions to polarized deep inelastic scattering. In this study, we explore the heavy quark impact on the polarized structure functions $g_1, g_4, g_5, g_6,$ and $g_7$ at...
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Haotian Cao (Northwestern University)6/23/26, 3:30 PMGPDs, TMDs, and Nucleon Tomography
In this talk, I will present a charge correlation observable in deep-inelastic scattering, defined as the charge deposit measured at a fixed polar angle relative to the incoming proton. Using soft-collinear effective theory, we derive factorization theorems for both the target and current fragmentation regions. In the forward limit, the nucleon charge correlator encodes detailed nucleon...
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TANMAY MAJI (National Institute of Technology Kurukshetra, India)6/23/26, 4:15 PMGPDs, TMDs, and Nucleon Tomography
The Wigner distributions in boost-invariant longitudinal space for gluons in a proton are presented using the light-front gluon spectator model inspired by AdS/QCD. The boost-invariant longitudinal space defined by the coordinate $\sigma=\frac{1}{2}b^- P^+$, can be accessed through the Fourier transformation over skewness $\xi$ to the gluon-gluon general transverse momentum dependent...
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Min-Huan Chu (Adam Mickiewicz University)6/23/26, 4:35 PMGPDs, TMDs, and Nucleon Tomography
We extend the asymmetric frame formalism for Generalized Parton Distributions (GPDs) to nonzero skewness by incorporating longitudinal momentum transfer. This framework, based on Lorentz-invariant amplitudes, provides efficient access to broad kinematics for mapping GPDs from the lattice. We validate the formalism using lattice data, extracting coordinate-space amplitudes to determine GPDs H...
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Bheemsehan Gurjar (University of Science and Technology of China)6/23/26, 4:55 PMGPDs, TMDs, and Nucleon Tomography
The near-threshold photo- and electroproduction of heavy vector quarkonia off the proton offers a unique probe of its gluonic structure. In particular, the $J/\psi$ photoproduction cross section close to threshold is directly sensitive to the proton’s gluon gravitational form factors (GFFs). In this work, we employ the generalized parton distribution framework, combined with gluon GFFs...
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