M. Zaccheddu

activity

20212026

most citedSnowmass 2021 White Paper: Electron Ion Collider for High Energy Physics

39 citations · 76 across the 15 of their papers we have counts for

collaborators

15 papers

hep-ph2026

A Bayesian Pixel Based Approach for Model Independent TMD Reconstruction

Marco Zaccheddu

We introduce a nonparametric pixel-based framework for the Bayesian inference and imaging of transverse momentum dependent (TMD) parton distributions. The methodology integrates TM…

hep-ph2026

Collins effect in pion-in-jet production in polarized $pp$ and $e p$ collisions

Carlo Flore, Umberto D'Alesio, Marco Zaccheddu

We study Collins azimuthal asymmetries for pion-in-jet production in polarized proton-proton and lepton-proton collisions. We adopt a hybrid transverse momentum dependent approach,…

hep-ph2026

Collins asymmetries for pion-in-jet production in polarized $ℓ p$ collisions at the EIC

Umberto D'Alesio, Carlo Flore, Marco Zaccheddu

We study Collins azimuthal asymmetries for pion-in-jet production in polarized lepton-proton collisions, extending previous analyses of polarized $pp$ scattering to a complementary…

hep-ph2026

TMDs in the Lens of Generative AI: A Pixel-Based Approach to Partonic Imaging

Marco Zaccheddu, Leonard Gamberg, Wally Melnitchouk +4

This work introduces a novel, nonparametric pixel-based framework for the Bayesian inference and imaging of transverse momentum dependent (TMD) parton distributions. The methodolog…

nucl-ex2026

Frascati 22 GeV Workshop Summary

A. Accardi, P. Achenbach, A. Afanasev +103

This document summarizes the outcomes of the "Science at the Luminosity Frontier: Jefferson Lab at 22 GeV" workshop, held at the INFN Laboratori Nazionali di Frascati in December 2…

hep-ph2025★ 2 cited

Collins function for pion-in-jet production in polarized $pp$ collisions: a test of universality and factorization

Umberto D'Alesio, Carlo Flore, Marco Zaccheddu

We present an updated study of the Collins azimuthal asymmetries for pion-in-jet production in polarized $pp$ collisions. To this aim, we employ a recent extraction of the transver…

hep-ph2024

Kernel methods for evolution of generalized parton distributions

A. Freese, D. Adamiak, I. Cloët +4

Generalized parton distributions (GPDs) characterize the 3-dimensional structure of hadrons, combining information about their internal quark and gluon longitudinal momentum distri…

hep-ph2024

Transverse $Λ$ polarization in unpolarized $pp \to jet Λ^{↑} X$

Umberto D'Alesio, Leonard Gamberg, Francesco Murgia +1

In this Letter, we investigate the spontaneous transverse polarization of $Λ$ hyperons produced in unpolarized $pp$ collisions inside a jet, by adopting a TMD approach where transv…

hep-ph2023

Transverse $Λ$ polarization in $e^{+} e^{-}$ annihilations and in SIDIS processes at the EIC within TMD factorization

Umberto D'Alesio, Leonard Gamberg, Francesco Murgia +1

We present a phenomenological study on the role of charm contribution and $S U (2)$ isospin symmetry in the extraction of the $Λ$ polarizing fragmentation functions from $e^+e^- \to…

hep-ph2022★ 12 cited

Transverse $Λ$ polarization in $e^{+} e^{-}$ processes within a TMD factorization approach and the polarizing fragmentation function

Umberto D'Alesio, Leonard Gamberg, Francesco Murgia +1

We perform a re-analysis of Belle data for the transverse $Λ$ and $Λ ˉ$ polarization in $e^{+} e^{-}$ annihilation processes within a transverse momentum dependent (TMD) factorizatio…

hep-ph2022★ 2 cited

Extracting the $Λ$ Polarizing Fragmentation Function from Belle $e^{+} e^{-}$ Data Within the TMD Formalism

Marco Zaccheddu, Umberto D'Alesio, Leonard Gamberg +1

Data from the Belle Collaboration for associated production (with a light unpolarized hadron) and single-inclusive production of transversely polarized $Λ$ -hyperons in $e^{+} e^{-}$ ann…

hep-ph2022★ 39 cited

Snowmass 2021 White Paper: Electron Ion Collider for High Energy Physics

R. Abdul Khalek, U. D'Alesio, M. Arratia +105

Electron Ion Collider (EIC) is a particle accelerator facility planned for construction at Brookhaven National Laboratory on Long Island, New York by the United States Department o…

hep-ph2022

General Helicity Formalism for Two-hadron Production in $e^{+} e^{-}$ Collisions and the $Λ$ Polarizing Fragmentation Function

Umberto D'Alesio, Francesco Murgia, Marco Zaccheddu

We present the complete structure of the azimuthal dependences and polarization observables for two-hadron production in $e^{+} e^{-}$ annihilation processes within a transverse momentu…

hep-ph2021★ 21 cited

General helicity formalism for two-hadron production in $e^{+} e^{-}$ annihilation within a TMD approach

Umberto D'Alesio, Francesco Murgia, Marco Zaccheddu

We present the complete leading-order results for the azimuthal dependences and polarization observables in $e^{+} e^{-} \to h_{1} h_{2} + X$ processes, where the two hadrons are produced al…

hep-ph2021

$Λ$ polarizing fragmentation function from Belle $e^{+} e^{-}$ data

Umberto D'Alesio, Francesco Murgia, Marco Zaccheddu

Experimental data from Belle Collaboration for the transverse polarization of $Λ$ 's measured in $e^{+} e^{-}$ annihilation processes are used to extract the polarizing fragmentation fu…

A Bayesian Pixel Based Approach for Model Independent TMD Reconstruction

Collins effect in pion-in-jet production in polarized pp and ep collisions

Collins asymmetries for pion-in-jet production in polarized ℓp collisions at the EIC

TMDs in the Lens of Generative AI: A Pixel-Based Approach to Partonic Imaging

Frascati 22 GeV Workshop Summary

Collins function for pion-in-jet production in polarized pp collisions: a test of universality and factorization

Kernel methods for evolution of generalized parton distributions

Transverse Λ polarization in unpolarized pp→jetΛ↑X

Transverse Λ polarization in e+e− annihilations and in SIDIS processes at the EIC within TMD factorization

Transverse Λ polarization in e+e− processes within a TMD factorization approach and the polarizing fragmentation function

Extracting the Λ Polarizing Fragmentation Function from Belle e+e− Data Within the TMD Formalism

Snowmass 2021 White Paper: Electron Ion Collider for High Energy Physics

General Helicity Formalism for Two-hadron Production in e+e− Collisions and the Λ Polarizing Fragmentation Function

General helicity formalism for two-hadron production in e+e− annihilation within a TMD approach

Λ polarizing fragmentation function from Belle e+e− data

Collins effect in pion-in-jet production in polarized $pp$ and $e p$ collisions

Collins asymmetries for pion-in-jet production in polarized $ℓ p$ collisions at the EIC

Collins function for pion-in-jet production in polarized $pp$ collisions: a test of universality and factorization

Transverse $Λ$ polarization in unpolarized $pp \to jet Λ^{↑} X$

Transverse $Λ$ polarization in $e^{+} e^{-}$ annihilations and in SIDIS processes at the EIC within TMD factorization

Transverse $Λ$ polarization in $e^{+} e^{-}$ processes within a TMD factorization approach and the polarizing fragmentation function

Extracting the $Λ$ Polarizing Fragmentation Function from Belle $e^{+} e^{-}$ Data Within the TMD Formalism

General Helicity Formalism for Two-hadron Production in $e^{+} e^{-}$ Collisions and the $Λ$ Polarizing Fragmentation Function

General helicity formalism for two-hadron production in $e^{+} e^{-}$ annihilation within a TMD approach

$Λ$ polarizing fragmentation function from Belle $e^{+} e^{-}$ data