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George Sterman6/24/26, 1:30 PMJets, Small-x Dynamics, and Saturation Physics
Light-cone Perturbation theory in coordinate space for massless particles has many of the nice features of its momentum space analog and also important differences. The role of states in momentum space is taken by paths in the coordinate version. We'll summarize coordinate diagrammatic rules and discuss progress toward understanding how infrared divergences cancel in the coordinate picture.
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Wim Cosyn (Florida International University)6/24/26, 2:10 PMJets, Small-x Dynamics, and Saturation Physics
In spectator tagged DIS on nuclei, products of nuclear breakup are detected. This is an example of SIDIS in the target fragmentation region. Methods of light-front quantization are employed to separate nuclear and nucleonic structure in the high-energy process and achieve a composite description.
The light-front wave function of the polarized deuteron is matched with a rotationally...
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José Garrido (UTFSM)6/24/26, 2:30 PMJets, Small-x Dynamics, and Saturation Physics
We present a new derivation of the non-linear evolution equations for the cross sections of productions of $n$-cut Balitsky-Fadin-Kuraev-Lipatov (BFKL) Pomerons in the final states ($\sigma_n$) in high energy DIS on a nucleus, resumming all multiple rescatterings and all leading logarithms of energy. These equations coincide with the equations that have been derived using the Abramovsky,...
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Fei Yao6/24/26, 2:50 PMJets, Small-x Dynamics, and Saturation Physics
We derive the gluon transverse-momentum-dependent (TMD) operator structure of back-to-back quark–antiquark dijet production in deep inelastic scattering at arbitrary Bjorken-x to twist-3 accuracy. Working in back-to-back kinematics, where the transverse momentum imbalance is much smaller than the individual jet momenta, we perform a systematic gradient expansion of quark propagators in the...
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Ramkumar Radhakrishnan (North Carolina State University, Raleigh, USA)6/24/26, 3:35 PMJets, Small-x Dynamics, and Saturation Physics
Within the Color Glass Condensate (CGC) framework and using the light cone wave function (LCWF) formalism, we compute the differential cross section for single inclusive gluon production at central rapidity at next-to-leading order (NLO) in the small-$x$ regime. In the CGC approach, the LCWF factorizes into valence and soft sectors residing in separate Hilbert spaces, separated by an arbitrary...
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Deepesh Bhamre (Universidade Cidade de Sao Paulo / Universidade Cruzeiro do Sul, Sao Paulo, Brazil)6/24/26, 3:55 PMJets, Small-x Dynamics, and Saturation Physics
Transverse single spin asymmetries (TSSAs) can be observed in high energy scattering processes involving polarized protons. These observables provide valuable information about the 3-D structure of proton. Sivers function is a type of transverse momentum dependent (TMD) parton distribution function responsible for TSSAs. Although the quark Sivers function has been studied well in the recent...
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Murilo Pedroso6/24/26, 4:25 PMJets, Small-x Dynamics, and Saturation Physics
In the proposed approach, the pion is described by the Bethe–Salpeter wave function (BSWF), obtained as a solution of the corresponding bound-state equation in Minkowski space. Established results from lattice QCD calculations for light quarks, gluons, and the dressed quark–gluon vertex are employed to model the kernel of the Bethe–Salpeter equation (BSE). The resulting integral equation can...
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wayne polyzou* (University of Iowa)6/24/26, 4:45 PMJets, Small-x Dynamics, and Saturation Physics
I discuss progress on the application of the clothed-particle representation of
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quantum field theory, originally due to Greenberg and Schewber [1] and devel-
oped by O. Shebeko and collaborators [2][3][4], to compute relativistic electron
and neutrino scattering observables off of light nuclei. In this application a
canonical transformation is applied to the Poincaré generators and strong...
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