Publications (26)
Collapse dynamics and Hilbert-space stochastic processes
Daniele Bajoni, Oreste Nicrosini, Alberto Rimini +1
Spontaneous collapse models of state vector reduction represent a possible solution to the quantum measurement problem. In the present paper we focus our attention on the Ghirardi-…
Factorization for quasi-TMD distributions of sub-leading power
Simone Rodini, Alexey Vladimirov
The quasi-transverse-momentum dependent (qTMD) distributions are equal-time correlators that can be computed within the lattice QCD approach. In the regime of large hadron's moment…
The case for an EIC Theory Alliance: Theoretical Challenges of the EIC
Raktim Abir, Igor Akushevich, Tolga Altinoluk +167
We outline the physics opportunities provided by the Electron Ion Collider (EIC). These include the study of the parton structure of the nucleon and nuclei, the onset of gluon satu…
Sivers, Boer-Mulders and worm-gear distributions at next-to-leading order
Felix Rein, Simone Rodini, Andreas Schäfer +1
We compute the Sivers, Boer-Mulders, worm-gear (T and L) transverse momentum dependent distributions in terms of twist-two and twist-three collinear distributions in the small-b li…
One-loop evolution of twist-2 generalized parton distributions
Valerio Bertone, Rafael F. del Castillo, Miguel G. Echevarria +2
We revisit the evolution of generalised parton distributions (GPDs) at the leading order in the strong coupling constant for all of the twist-2 quark and gluon operators. We…
One-loop matching for leading-twist generalised transverse-momentum-dependent distributions
Valerio Bertone, Miguel G. Echevarria, Ãscar del Rio +1
We present the one-loop matching coefficients necessary to match all of the leading-twist generalised transverse-momentum-dependent distributions (GTMDs) onto generalised parton di…
Determination of quark-gluon-quark interference within the proton
Alexey Vladimirov, Guillermo Portela, Simone Rodini
Quarks and gluon, as quantum particles, are subjects to various effects that go beyond the naive parton picture and are not captured by ordinary parton densities. In this work, we…
Perturbative results of matrix elements of the axial current and their relation with the axial anomaly
Ignacio Castelli, Adam Freese, Cédric Lorcé +3
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 ca…
Symbolic Extraction of Non-Perturbative Transverse-Momentum-Dependent Distributions from Drell-Yan Data
Cole Granger, Alessandro Bacchetta, Valerio Bertone +6
We present an analytical parametrization of the non-perturbative transverse-momentum-dependent (TMD) parton distribution function of unpolarized quarks, extracted from Drell-Yan da…
An extraction of the Collins-Soper kernel from a joint analysis of experimental and lattice data
Artur Avkhadiev, Valerio Bertone, Chiara Bissolotti +6
We present a first joint extraction of the Collins-Soper kernel (CSK) combining experimental and lattice QCD data in the context of an analysis of transverse-momentum-dependent dis…
Perturbative results for the matrix elements of the vector current and the role of different infrared regulators
Alessio Carmelo Alvaro, Ignacio Castelli, Cédric Lorcé +3
We investigate the twist-2 unpolarized generalized parton distributions (GPDs) of quarks for an on-shell gluon target in quantum chromodynamics. These GPDs parametrize the leading-…
The gravitational form factor D(t) of the electron
Andreas Metz, Barbara Pasquini, Simone Rodini
The electron-graviton interaction can be described in terms of the gravitational form factors of the QED energy momentum tensor. Here we focus on the form factor D(t), and we exami…
Numerical implementation of evolution equations for twist-3 collinear PDFs
Simone Rodini, Lorenzo Rossi, Alexey Vladimirov
Twist-3 collinear parton distribution functions (PDFs) are matrix elements of quark-gluon-quark or three-gluons light-cone operators. They depend on three momentum fraction variabl…
A model for pion collinear parton distribution function and form factor
Simone Venturini, Barbara Pasquini, Simone Rodini
We developed a model for the pion light-front wave function (LFWF) that incorporates valence, sea and gluon degrees of freedom. Using the LFWF overlap representation, we derived pa…
Energy-momentum tensor in the scalar diquark model
Arturo Amor-Quiroz, William Focillon, Cédric Lorcé +1
We compute all the gravitational form factors in the scalar diquark model at the one-loop level using two different regularization methods. We check explicitly that all the Poincar…
Higher-order structure of Hamiltonian truncation effective theory
Andrea Maestri, Simone Rodini, Barbara Pasquini
We study the Hamiltonian truncation for the two-dimensional theory within the framework of Hamiltonian truncation effective theory, where truncation artifacts are mitigate…
Revisiting the proton mass decomposition
Andreas Metz, Barbara Pasquini, Simone Rodini
Different decompositions (sum rules) for the proton mass have been proposed in the literature. All of them are related to the energy-momentum tensor in quantum chromodynamics. We r…
The gravitational form factors of the electron in quantum electrodynamics
Adam Freese, Andreas Metz, Barbara Pasquini +1
We calculate the gravitational form factors of the electron at one loop in quantum electrodynamics, decomposing these into contributions from the electron and photon parts of the e…
A Neural-Network Extraction of Unpolarised Transverse-Momentum-Dependent Distributions
Alessandro Bacchetta, Valerio Bertone, Chiara Bissolotti +4
We present the first extraction of transverse-momentum-dependent distributions of unpolarised quarks from experimental Drell-Yan data using neural networks to parametrise their non…
Transverse momentum dependent factorization for SIDIS at next-to-leading power
Simone Rodini, Alexey Vladimirov
The semi-inclusive deep-inelastic scattering (SIDIS) is the golden process for investigating the nucleon's transverse momentum-dependent (TMD) structure. We present the complete ex…
Definition and evolution of transverse momentum dependent distribution of twist-three
Simone Rodini, Alexey Vladimirov
We present an in-depth analysis of transverse momentum dependent (TMD) distributions of twist-three. In particular, we focus on evolution equations, symmetry relations, parameteriz…
Collinear matching for next-to-leading power transverse-momentum distributions
Simone Rodini, Alessio Carmelo Alvaro, Barbara Pasquini
Phenomenological studies of transverse momentum dependent (TMD) parton distributions rely on the expansion in small values of the transverse separation of fields, where TMD parton…
The valence quark, sea, and gluon content of the pion from the parton distribution functions and the electromagnetic form factor
Barbara Pasquini, Simone Rodini, Simone Venturini
We present a light-front model calculation of the pion parton distribution functions (PDFs) and the pion electromagnetic form factor. The pion state is modeled in terms of light-fr…
Analytical derivatives of Neural Networks
Simone Rodini
We propose a simple recursive algorithm that allows the computation of the first- and second-order derivatives with respect to the inputs of an arbitrary deep feed forward neural n…
Collinear matching for leading power gluon transverse momentum distributions
Alessio Carmelo Alvaro, Nanako Kato, Barbara Pasquini +2
We compute the tree-level and one-loop matching relations for leading power gluon transverse momentum dependent parton distribution functions. At tree-level, working within the spi…
Energy-momentum tensor in QCD: nucleon mass decomposition and mechanical equilibrium
Cédric Lorcé, Andreas Metz, Barbara Pasquini +1
We review and examine in detail recent developments regarding the question of the nucleon mass decomposition. We discuss in particular the virial theorem in quantum field theory an…