297 citations · 2.4k across the 39 of their papers we have counts for
42 papers
First next-to-next-to-leading-order extraction of fragmentation functions for Lambda hyperons
Valerio Bertone, Alessia Bongallino, Amedeo Chiefa +2
We present MAPFF1.0_Lambda, the first global analysis at next-to-next-to-leading order in perturbative QCD of the collinear unpolarised fragmentation functions of Lambda hyperons.…
Gluon Sivers function in dijet production at the EIC
Miguel G. Echevarria, Patricia Andrea Gutierrez García, Ignazio Scimemi
The transverse-momentum-dependent (TMD) factorization theorem for dijet production in deep-inelastic scattering is used here to make predictions of the gluon Sivers function. We re…
Factorization for leptoproduction at small transverse momentum
Miguel G. Echevarria, Samuel F. Romera, Pieter Taels
Nonrelativistic Quantum Chromodynamics (NRQCD) breaks down in the region of low transverse momentum, where the transverse momentum of the produced quarkonium state is sensitive to…
Gluon TMD fragmentation function into quarkonium
Miguel G. Echevarria, Samuel F. Romera, Ignazio Scimemi
We compute the gluon transverse-momentum-dependent fragmentation function (TMDFF) at next-to-leading order (NLO) into heavy quarkonium in the color-octet channel, bas…
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…
GTMDs and the factorization of exclusive double Drell-Yan
Miguel G. Echevarria, Patricia A. Gutierrez Garcia, Ignazio Scimemi
Different exclusive processes have been proposed to access the generalized transverse momentum dependent distributions (GTMDs) with no proof of factorization, which allows to rigor…
Illuminating the nucleon spin
Miguel G. Echevarria
In this short note the QED extension of the nucleon spin sum rule is considered. To this end, the leading-order (LO) QED evolution kernels for the quark/gluon helicity and orbital-…
Transverse momentum dependent distributions in dijet and heavy hadron pair production at EIC
Rafael F. del Castillo, Miguel G. Echevarria, Yiannis Makris +1
We discuss the measurement of gluon transverse momentum distribution (TMD) in dijet and heavy hadron pair (HHP) production in semi-inclusive deep inelastic scattering. The factoriz…
Prospects for quarkonium studies at the high-luminosity LHC
Emilien Chapon, David d'Enterria, Bertrand Ducloue +48
Prospects for quarkonium-production studies accessible during the upcoming high-luminosity phases of the CERN Large Hadron Collider operation after 2021 are reviewed. Current exper…
On the physics potential to study the gluon content of proton and deuteron at NICA SPD
A. Arbuzov, A. Bacchetta, M. Butenschoen +25
The Spin Physics Detector (SPD) is a future multipurpose experiment foreseen to run at the NICA collider, which is currently under construction at the Joint Institute for Nuclear R…
Quantum Simulation of Light-Front Parton Correlators
M. G. Echevarria, I. L. Egusquiza, E. Rico +1
The physics of high-energy colliders relies on the knowledge of different non-perturbative parton correlators, such as parton distribution functions, that encode the information on…
Global analysis of the Sivers functions at NLO+NNLL in QCD
Miguel G. Echevarria, Zhong-Bo Kang, John Terry
We perform global fit to the quark Sivers function within the transverse momentum dependent (TMD) factorization formalism in QCD. We simultaneously fit Sivers asymmetry data from S…
TMD factorization for dijet and heavy-meson pair in DIS
Rafael F. del Castillo, Miguel G. Echevarria, Yiannis Makris +1
We study a transverse momentum dependent (TMD) factorization framework for the processes of di-jet and heavy meson pair production in deep-inelastic-scattering in an electron-proto…
Quarkonium TMD fragmentation functions in NRQCD
Miguel G. Echevarria, Yiannis Makris, Ignazio Scimemi
We study the transverse-momentum spectrum of quarkonium production from single light-parton fragmentation mechanism. In the case of semi-inclusive deep inelastic scattering, we obs…
Studying the gluon TMDs with - and -pair production at the LHC
Florent Scarpa, Daniël Boer, Miguel G. Echevarria +3
We report on how - and -pair production are promising processes to access the polarised and unpolarised gluon TMDs at the LHC. We present the formalism used, as well as res…
Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC
Florent Scarpa, Daniël Boer, Miguel G. Echevarria +3
- or -pair production at the LHC are promising processes to study the gluon transverse momentum distributions (TMDs) which remain very poorly known. In this article, we imp…
Proper TMD factorization for quarkonia production: as a study case
Miguel G. Echevarria
Quarkonia production in different high-energy processes has recently been proposed in order to probe gluon transverse-momentum-dependent parton distribution and fragmentation funct…
Azimuthal asymmetries in unpolarized SIDIS and Drell-Yan processes: a case study towards TMD factorization at subleading twist
Alessandro Bacchetta, Giuseppe Bozzi, Miguel G. Echevarria +3
We consider the azimuthal distribution of the final observed hadron in semi-inclusive deep-inelastic scattering and the lepton pair in the Drell-Yan process. In particular, we focu…
QCDQED evolution of TMDs
Alessandro Bacchetta, Miguel G. Echevarria
We consider for the first time the QED corrections to the evolution of (un)polarized quark and gluon transverse-momentum-dependent distribution and fragmentation functions (TMDs in…
Matching factorization theorems with an inverse-error weighting
Miguel G. Echevarria, Tomas Kasemets, Jean-Philippe Lansberg +2
We propose a new fast method to match factorization theorems applicable in different kinematical regions, such as the transverse-momentum-dependent and the collinear factorization…
Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)
Daniel Kikoła, Miguel García Echevarria, Cynthia Hadjidakis +6
The measurement of Single Transverse-Spin Asymmetries, , for various quarkonium states and Drell-Yan lepton pairs can shed light on the orbital angular momentum of quarks and…
Unpolarized Transverse Momentum Dependent Parton Distribution and Fragmentation Functions at next-to-next-to-leading order
Miguel G. Echevarria, Ignazio Scimemi, Alexey Vladimirov
The transverse momentum dependent parton distribution/fragmentation functions (TMDs) are essential in the factorization of a number of processes like Drell-Yan scattering, vector b…
Proper definition and evolution of generalized transverse momentum distributions
Miguel G. Echevarria, Ahmad Idilbi, Koichi Kanazawa +4
We consider one of the most fundamental sets of hadronic matrix elements, namely the generalized transverse momentum distributions (GTMDs), and argue that their existing definition…
The Universal Transverse Momentum Dependent Soft Function at NNLO
Miguel G. Echevarria, Ignazio Scimemi, Alexey Vladimirov
All (un)polarized transverse momentum dependent functions (TMDs), both distribution and fragmentation functions, are defined with the same universal soft function, which cancels sp…