M. Fucilla

Quantum tomography at the Electron-Ion Collider

Michael Fucilla, Yuxun Guo, Yoshitaka Hatta

We initiate the study of quantum state tomography---the experimental reconstruction of the complete spin density matrix---of massless and massive quark-antiquark pairs produced at…

High-energy QCD phenomenology with next-to-leading order BFKL eigenfunctions

Ada Polizzi, Michael Fucilla, Alessandro Papa

We discuss the phenomenological use of the next-to-leading order (NLO) eigenfunctions of the Balitsky-Fadin-Kuraev-Lipatov (BFKL) kernel. We first recall the BFKL representation of…

Towards High-Energy Factorization at Full NLO for Quarkonium Production

Michael Fucilla, Jean-Philippe Lansberg, Maxim Nefedov +2

Heavy-quarkonium hadroproduction at the LHC can access kinematic configurations in which the partonic center-of-mass energy is much larger than the quarkonium mass and transverse m…

Spin-spin entanglement at high energy

Michael Fucilla, Yoshitaka Hatta, Bo-Wen Xiao

Spin correlations offer a quantum-information perspective on the partonic final states produced in high-energy scattering. We discuss the spin-density matrix of a heavy quark-antiq…

NLO corrections to the NEik DIS structure functions

Tolga Altinoluk, Guillaume Beuf, Jules Favrel +1

We summarize the next-to-leading order (NLO) corrections to next-to-eikonal (NEik) quark background contributions to DIS structure functions. At NEik accuracy, in addition to corre…

Reggeization of quarks from next-to-eikonal high-energy QCD

Tolga Altinoluk, Guillaume Beuf, Jules Favrel +1

We develop a comprehensive Wilson-line formulation of quark Reggeization in QCD. Starting from a next-to-eikonal operator built from a semi-infinite Wilson line and a background-qu…

Quark Reggeization in QCD from the Wilson line formalism

Tolga Altinoluk, Guillaume Beuf, Jules Favrel +1

We establish a Wilson-line formulation of quark Reggeization in QCD. An interpolating operator for the Reggeized quark is identified in terms of semi-infinite Wilson lines, and its…

Quantum entanglement in electron-nucleus collisions: Role of the linearly polarized gluon distribution

Michael Fucilla, Yoshitaka Hatta, Bo-Wen Xiao

We calculate the spin density matrix of a back-to-back quark-antiquark pair inclusively produced in electron-nucleus scattering, taking into account the gluon saturation effect and…

Deeply virtual meson production at HERA and at the EIC within the Color Glass Condensate EFT

Renaud Boussarie, Luigi Delle Rose, Michael Fucilla +3

Continuing our previous study of Deeply Virtual Meson Production (DVMP) at twist-3 accuracy, we derive compact expressions for all helicity amplitudes. We perform a phenomenologica…

2025 EIC-France Workshop: Physics Highlights and Perspectives

F. Arleo, V. Bertone, J. Bettane +75

This document presents a synthesis of the theory contributions and discussions from the 2nd EIC-France Workshop, held at IJCLab (Orsay) on 1-3 December 2025. The workshop brought t…

Complete NLO BFKL impact factors for quarkonium hadroproduction in NRQCD: the case of $^{1} S_{0}^{[1]}$ , $^{1} S_{0}^{[8]}$ , and $^{3} S_{1}^{[8]}$ states

Michael Fucilla, Jean-Philippe Lansberg, Maxim Nefedov +2

We present the first complete next-to-leading-order calculation of the impact factors for hadroproduction of the $^{1} S_{0}^{[1]}$ , $^{1} S_{0}^{[8]}$ , and $^{3} S_{1}^{[8]}$ NRQCD states…

Next-to-Leading Order corrections to the Next-to-Eikonal DIS structure functions

Tolga Altinoluk, Guillaume Beuf, Jules Favrel +1

We compute next-to-leading order (NLO) corrections to next-to-eikonal (NEik) quark background contributions to DIS structure functions. Among NEik corrections, $t$ -channel quark ex…

Exclusive photoproduction of a $π^{0} γ$ pair in the saturation framework

Michael Fucilla, Saad Nabeebaccus, Lech Szymanowski +2

We consider the exclusive photoproduction of a $π^{0} γ$ pair with large invariant mass, as a promising channel to study the effects of gluon saturation. It has recently been demonst…

Spin-spin entanglement in diffractive heavy quark production

Michael Fucilla, Yoshitaka Hatta

We calculate the spin density matrix of a heavy quark-antiquark pair ( $b b ˉ$ , $c c ˉ$ or $s s ˉ$ ) diffractively produced in Deep Inelastic Scattering and Ultraperipheral…

High-energy factorization via eigenfunctions of the next-to-leading-order BFKL kernel

Ada Polizzi, Michael Fucilla, Alessandro Papa

We present a general formula for the amplitude of forward exclusive hadronic processes in the semihard regime of perturbative Quantum Chromodynamics (QCD), by means of the {\em nex…

The real corrections to the Higgs impact factor at next-to-leading order with finite top mass

Francesco Giovanni Celiberto, Luigi Delle Rose, Michael Fucilla +2

This work presents the computation of real corrections to the impact factor for forward Higgs boson production, preserving the full dependence on the top-quark mass. The results ar…

Exclusive leptoproduction of a light vector meson at the twist-3 in a GTMD framework

Renaud Boussarie, Michael Fucilla, Lech Szymanowski +1

We provide the most general description of the exclusive leptoproduction of a light vector meson, at high center-of-mass energy, within the CGC/shockwave formalism. We keep a twist…

Heavy-quark mass effects in off-light-cone distributions

Valerio Bertone, Michael Fucilla, Cédric Mezrag

We compute the one-loop correction to the forward matrix element of an off-light-cone bi-local quark correlator characterised by a space-like separation $z^{2}$ in the presence of he…

Prospective report of the French QCD community to the ESPPU 2025 with respect to the program of the LHC Run 5 and beyond and future colliders at CERN

Carolina Arata, François Arleo, Benjamin Audurier +59

This document summarizes the prospective physics plans of the French QCD and Heavy-Ion community, including the experimental programs at the LHC Run 5 and beyond and future collide…

The next-to-leading order Higgs impact factor at physical top mass: The real corrections

Francesco Giovanni Celiberto, Luigi Delle Rose, Michael Fucilla +2

We compute the real corrections to the impact factor for the production of a forward Higgs boson, retaining full top-mass dependence. We demonstrate that the rapidity divergence is…

Gluon tomography through diffractive processes in a saturation framework

Renaud Boussarie, Michael Fucilla, Andrey V. Grabovsky +3

We discuss a series of results aimed at bringing saturation physics and gluon tomography into an era of precision. In particular, the NLO treatment of diffractive: 1) exclusive dij…

Towards Higgs and $Z$ boson plus jet distributions at NLL/NLO $^{+}$

Francesco Giovanni Celiberto, Luigi Delle Rose, Michael Fucilla +2

We present novel predictions for rapidity and transverse-momentum distributions sensitive to the emission of a Higgs boson accompanied by a jet in proton collisions, calculated wit…

Higgs production at NLL accuracy in the BFKL approach

Francesco Giovanni Celiberto, Luigi Delle Rose, Michael Fucilla +4

Precision physics in the Higgs sector has been one of the main challenges of particle physics in the recent years. The pure fixed-order calculations entering the collinear factoriz…