251 citations · 956 across the 22 of their papers we have counts for
27 papers
First Radial Excitations of Baryons in a Contact Interaction: Mass Spectrum
L. X. Gutiérrez-Guerrero, Alfredo Raya, L. Albino +1
We compute masses of twenty positive parity first radial excitations of spin- and baryons composed of u,d,s,c and b quarks in a quark-diquark picture within a contact in…
Precision studies for the partonic kinematics calculation through Machine Learning
David F. Renteria-Estrada, Roger J. Hernandez-Pinto, G. F. R. Sborlini +1
High Energy collider experiments are moving to the highest precision frontier quickly. The predictions of observables are based on the factorization formula which helps to connect…
From five-loop scattering amplitudes to open trees with the Loop-Tree Duality
Selomit Ramírez-Uribe, Roger J. Hernández-Pinto, Germán Rodrigo +1
Characterizing multiloop topologies is an important step towards developing novel methods at high perturbative orders in quantum field theory. In this article, we exploit the Loop-…
Parton distribution effects in the direct photon production at hadron collisions
David F. Rentería-Estrada, Roger J. Hernández-Pinto, German F. R. Sborlini
Parton distribution functions are crucial to understand the internal kinematics of hadrons. There are currently a large number of distribution functions on the market, and thanks t…
A stroll through the loop-tree duality
Jesús Aguilera-Verdugo, Félix Driencourt-Mangin, Roger J. Hernández-Pinto +8
The Loop-Tree Duality (LTD) theorem is an innovative technique to deal with multi-loop scattering amplitudes, leading to integrand-level representations over an Euclidean space. In…
May the four be with you: Novel IR-subtraction methods to tackle NNLO calculations
W. J. Torres Bobadilla, G. F. R. Sborlini, P. Banerjee +21
In this report, we present a discussion about different frameworks to perform precise higher-order computations for high-energy physics. These approaches implement novel strategies…
Mathematical properties of nested residues and their application to multi-loop scattering amplitudes
J. Jesus Aguilera-Verdugo, Roger J. Hernandez-Pinto, German Rodrigo +2
The computation of multi-loop multi-leg scattering amplitudes plays a key role to improve the precision of theoretical predictions for particle physics at high-energy colliders. In…
Universal opening of four-loop scattering amplitudes to trees
Selomit Ramirez-Uribe, Roger J. Hernandez-Pinto, German Rodrigo +2
The perturbative approach to quantum field theories has made it possible to obtain incredibly accurate theoretical predictions in high-energy physics. Although various techniques h…
Causal representation of multi-loop Feynman integrands within the loop-tree duality
J. Jesus Aguilera-Verdugo, Roger J. Hernandez-Pinto, German Rodrigo +2
The numerical evaluation of multi-loop scattering amplitudes in the Feynman representation usually requires to deal with both physical (causal) and unphysical (non-causal) singular…
Open loop amplitudes and causality to all orders and powers from the loop-tree duality
J. Jesus Aguilera-Verdugo, Felix Driencourt-Mangin, Roger J. Hernandez-Pinto +7
Multiloop scattering amplitudes describing the quantum fluctuations at high-energy scattering processes are the main bottleneck in perturbative quantum field theory. The loop-tree…
Recent developments from the loop-tree duality
German Rodrigo, Felix Driencourt-Mangin, German F. R. Sborlini +1
In this talk, we review the most recent developments of the four-dimensional unsubstraction (FDU) and loop-tree duality (LTD) methods. In particular, we make emphasis on the advant…
Four-dimensional regularization of higher-order computations: FDU approach
German F. R. Sborlini, Felix Driencourt-Mangin, Roger Hernandez-Pinto +1
We have recently proposed a new regularization framework based on the loop-tree duality theorem. This theorem allows to rewrite loop level amplitudes in terms of tree-level structu…
QED and QCD self-energy corrections through the loop-tree duality
N. Selomit Ramírez-Uribe, Roger J. Hernández-Pinto, Germán Rodrigo
The loop-tree duality (LTD) theorem establishes that loop contributions to scattering amplitudes can be computed through dual integrals, which are build from single cuts of the vir…
Global extraction of the parton-to-kaon fragmentation functions at NLO in QCD
R. J. Hernández-Pinto, M. Epele, D. de Florian +2
In this document, we present the global QCD analysis of parton-to-kaon fragmentation functions at next-to-leading order accuracy using the latest experimental information on single…
Parton-to-Kaon Fragmentation Revisited
D. de Florian, M. Epele, R. J. Hernandez-Pinto +2
We revisit the global QCD analysis of parton-to-kaon fragmentation functions at next-to-leading order accuracy using the latest experimental information on single-inclusive kaon pr…
Towards regularized higher-order computations in QFT without DREG
German F. R. Sborlini, Felix Driencourt-Mangin, Roger Hernandez-Pinto +1
In this talk, we review the basis of the loop-tree duality theorem, which allows to rewrite loop scattering amplitudes in terms of tree-level like objects. Since the loop measure i…
Global extraction of the parton-to-pion fragmentation functions at NLO accuracy in QCD
R. J. Hernández-Pinto, M. Epele, D. de Florian +2
In this review, we discuss the results on the parton-to-pion fragmentation functions obtained in a combined NLO fit to data of single-inclusive hadron production in electron-positr…
NLO cross sections in 4 dimensions without DREG
R. J. Hernández-Pinto, F. Driencourt-Mangin, G. Rodrigo +1
In this review, we present a new method for computing physical cross sections at NLO accuracy in QCD without using the standard Dimensional Regularisation. The algorithm is based o…
Applications of the loop-tree duality
German Rodrigo, Felix Driencourt-Mangin, German F. R. Sborlini +1
We describe a new method to perform NLO calculations, combining real and virtual amplitudes at the integrand level, with a fully local compensation between them in the IR, and betw…
Four-dimensional unsubtraction from the loop-tree duality
German F. R. Sborlini, Felix Driencourt-Mangin, Roger Hernandez-Pinto +1
We present a new algorithm to construct a purely four dimensional representation of higher-order perturbative corrections to physical cross-sections at next-to-leading order (NLO).…
From dimensional regularization to NLO computations in four dimensions
German F. R. Sborlini, Roger Hernandez-Pinto, German Rodrigo
Loop-tree duality (LTD) allows to express virtual contributions in terms of phase-space integrals, thus leading to a direct mapping with real radiation terms. We review the basis o…
Towards gauge theories in four dimensions
Roger J. Hernandez-Pinto, German F. R. Sborlini, German Rodrigo
The abundance of infrared singularities in gauge theories due to unresolved emission of massless particles (soft and collinear) represents the main difficulty in perturbative calcu…
QCD Phenomenology
R. J. Hernández-Pinto
Quantum Chromodynamics is the most successful theory in particle physics. The understanding of all different signals at hadron colliders have been achieved due to the correct inter…
Parton-to-Pion Fragmentation Reloaded
D. de Florian, R. Sassot, M. Epele +2
We present a new, comprehensive global analysis of parton-to-pion fragmentation functions at next-to-leading order accuracy in QCD. The obtained results are based on the latest exp…