Conveners
Plenary: Plenary
- Jianwei Qiu (Jefferson Lab)
Plenary
- David Richards (Jefferson Lab)
Plenary: Plenay
- M Gabriel Santiago (Center for Nuclear Femtography)
Plenary: Plenary
- Alexei Prokudin (JLab)
Plenary: Plenary
- Yoshitaka Hatta (Brookhaven National Laboratory)
Plenary: Plenary
- Martha Constantinou (Temple University)
Plenary: Plenary
- Robert Edwards (Jefferson Lab)
Plenary: Plenary
- Shohini Bhattacharya (University of Connecticut)
Plenary: Plenary
- Marie BOER (Virginia Tech)
Plenary: Plenary
- Anatoly Radyushkin (ODU/JLab)
Plenary: closing
- Alexei Prokudin (JLab)
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Zein-Eddine Meziani (Argonne National Laboratory)5/19/25, 9:00 AM
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Martha Constantinou (Temple University)5/19/25, 9:30 AM
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George Sterman (SBU)5/19/25, 10:00 AM
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Daniel Pitonyak (Lebanon Valley College)5/19/25, 11:00 AM
High-energy collision processes where multiple hadrons are detected in the final state provide a rich structure to probe QCD dynamics. Establishing the correct quantum field-theoretic operator definition of multi-hadron fragmentation functions is critical in this regard. I will discuss the latest developments in the theory of multi-hadron fragmentation functions in interpreting them as number...
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Yang-Ting Chien (GSU)5/19/25, 11:30 AM
Jet angularity is a classic substructure observable which probes the angular distribution of jet constituents. While soft-drop grooming may suppress complicated contributions from wide-angle, soft radiation, the dependence on jet algorithm also limits the theoretical precision to higher accuracy. In this work we provide resummed calculations of flattened jet angularity which generalizes the...
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Andrey Tarasov (North Carolina State University)5/20/25, 9:00 AM
I'll discuss calculation of the NLO corrections to the unpolarized quark TMDPDFs using the factorization scheme defined in arXiv:2311.16402. The scheme aims to take into account the all collinear twist content of the TMDPDFs in the region of large $b_\perp\lesssim\Lambda^{-1}_{QCD}$ and bridge together the limits of large and small-x. I'll discuss different aspects of this derivation including...
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Yuri Kovchegov (The Ohio State University)5/20/25, 9:30 AM
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Andrea Simonelli (ODU and JLAB)5/20/25, 10:00 AM
The spacetime structure underlying hadronic processes plays a
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central role in shaping their factorization properties. In many
important cases, the relevant dynamics unfold along two opposing
light-cone directions, and any deviation from the lightcone is commonly
assumed to be negligible at leading power. In this presentation, I will
demonstrate the significance of these off lightcone... -
Patrick Barry (Argonne National Lab)5/20/25, 11:00 AM
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Chiara Bissolotti (Argonne National Laboratory)5/20/25, 11:30 AM
We present the first extraction of transverse-momentum-dependent distributions of unpolarized quarks from experimental Drell-Yan data using neural networks to parametrize their nonperturbative part. We show that neural networks outperform traditional parametrizations providing a more accurate description of data. This work establishes the feasibility of using neural networks to explore the...
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Nathaly Santiesteban (University of New Hampshire)5/20/25, 12:00 PM
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Marie Boer (Virginia Tech)5/21/25, 9:00 AM
I would like to present recent work done for developing an event generator aimed at making projections for hard exclusive reactions such as Compton-like reactions and meson production, for JLab to EIC energies. We extended our framework to include new reactions (phi, gamma-meson...), radiative corrections, etc. In this talk we also would like to discuss the connections between this work and...
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Shohini Bhattacharya (University of Connecticut)5/21/25, 9:30 AM
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Yuxun Guo (Lawrence Berkeley National Lab)5/21/25, 10:00 AM
I will discuss some recent progresses in constraining the gravitational form factors (GFFs) of the proton via near-threshold heavy quarkonium production with next-to-leading order alpha_S corrections. Particularly, I will show with Bayesian inference that such processes provide important constraint on the gluonic GFFs as well as the quark GFFs whose contributions emerge at next-to-leading order.
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Zhite Yu (Jefferson Lab)5/21/25, 11:00 AM
I am going to present a new formulation of the azimuthal modulations in hard exclusive diffraction processes. These are crucial in the phenomenological extraction and separation of various generalized parton distributions (GPDs). Traditionally, GPDs could be extracted from angular modulations of the deeply virtual Compton scattering (DVCS) in the Breit frame. However, the Bethe-Heitler...
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Swagato Mukherjee (Brookhaven National Laboratory)5/21/25, 11:30 AM
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Ignacio Castelli (Physics Department, Temple University, Philadelphia)5/21/25, 12:00 PM
In the Standard Model of particle physics, the axial current is not conserved, due both to fermion masses and to the axial anomaly. Using perturbative quantum chromodynamics, we calculate matrix elements of the local and non-local axial current for a gluon target, clarifying their connection with the axial anomaly. In so doing, we also reconsider classic results obtained in the context of the...
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Joe Karpie5/22/25, 9:00 AM
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Adam Freese (Jefferson Lab)5/22/25, 9:30 AM
Generalized parton distributions (GPDs) are functions of four variables, one of which is a renormalization scale. The functional dependence on this renormalization scale is fully determined by a renormalization group equation---or "evolution equation"---that can be derived from perturbative QCD. A fast numerical implementation of the scale evolution is vital to any global phenomenology effort....
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Gabriel Santiago (Center for Nuclear Femtography)5/22/25, 10:00 AM
Within the pseudo-PDF framework, we investigate the perturbative contributions to correlators that are used to study transverse momentum dependent parton distributions (TMDs) on the lattice. Our results contain the full perturbative corrections which arise as artifacts from performing the calculation for a Euclidean separation between the parton fields, as well as the corrections which yield...
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Bernd Surrow (Temple University)5/22/25, 11:00 AM
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Christopher Cocuzza (College of William & Mary)5/22/25, 11:30 AM
A new global QCD analysis by the JAM collaboration performs the first extraction of transversity PDFs and tensor charges using both the Transverse Momentum Distribution (TMD) and Dihadron Fragmentation Function (DiFF) channels simultaneously, including all currently available experimental data. Known theoretical constraints on transversity, namely, its small-$x$ asymptotic behavior and the...
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Harut Avagyan (Jefferson Lab)5/22/25, 12:00 PM
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Patrizia Rossi (Jefferson Lab)5/23/25, 9:00 AM
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Sebastian Grieninger (Stony Brook University)5/23/25, 9:30 AM
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Vladimir Braun (University of Regensburg)5/23/25, 10:00 AM
We calculate $(\sqrt{-t}/Q)^k $ and $(m/Q)^k$ power corrections with $k\le 4$, where $m$ is the target mass and $t$ is the momentum transfer, to several key observables in Deeply Virtual Compton Scattering (DVCS). We find that the power expansion is well convergent up to $|t|/Q^2\lesssim 1/4$ for most of the observables, but is naturally organized in terms of $1/(Q^2+t)$ rather than the...
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Ian Balitsky (JLab/ODU)5/23/25, 11:00 AM
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Yoshitaka Hatta (Brookhaven National Laboratory)5/23/25, 11:30 AM
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George Sterman (SBU)
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Shunzo Kumano (KEK/J-PARC)
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Ignazio Scimemi (Universdad Complutense Madrid)