A5030870487- Particle physics theoretical and experimental studies
- Black Holes and Theoretical Physics
- Quantum Chromodynamics and Particle Interactions
- Noncommutative and Quantum Gravity Theories
- Particle Detector Development and Performance
- Quantum optics and atomic interactions
- Distributed and Parallel Computing Systems
- Quantum Mechanics and Non-Hermitian Physics
- Laser-Matter Interactions and Applications
- Mathematical Dynamics and Fractals
- High-Energy Particle Collisions Research
- ICT Impact and Policies
- Algebraic and Geometric Analysis
- Advanced Mathematical Theories and Applications
Parc Científic de la Universitat de València
2021
Instituto de Física Corpuscular
2019-2021
Consejo Superior de Investigaciones Científicas
2019-2021
Universitat de València
2019-2021
University of Bonn
2015-2021
Max Planck Society
2019
We amend a recent dispersive analysis of the anomalous $$\eta $$ decay process \rightarrow \pi ^+\pi ^-\gamma by effects $$a_2$$ tensor meson, lowest-lying resonance that can contribute in $$\pi \eta system. While net on measured spectrum are small, they may be more pronounced for analogous '$$ decay. There nonnegligible consequences transition form factor, which is an important quantity hadronic light-by-light scattering contribution to muon's magnetic moment. predict total and differential...
Multiloop scattering amplitudes describing the quantum fluctuations at high-energy processes are main bottleneck in perturbative field theory. The loop-tree duality is a novel method aimed overcoming this by opening loop into trees and combining them integrand level with real-emission matrix elements. In Letter, we generalize to all orders expansion using complex Lorentz-covariant prescription of original one-loop formulation. We introduce series mutiloop topologies arbitrary internal...
The Loop-Tree Duality (LTD) theorem is an innovative technique to deal with multi-loop scattering amplitudes, leading integrand-level representations over a Euclidean space. In this article, we review the last developments concerning framework, focusing on manifestly causal representation of Feynman integrals and definition dual local counter-terms cancel infrared singularities.
A bstract We present the first comprehensive analysis of unitarity thresholds and anomalous scattering amplitudes at two loops beyond based on loop- tree duality, show how non-causal unphysical are locally cancelled in an efficient way when forest all dual on-shell cuts is considered as one. also prove that soft collinear singularities restricted to a compact region loop three-momenta, which necessary condition for implementing local cancellation infrared with ones appearing real emission;...
Abstract Asymptotic expansions of Feynman amplitudes in the loop-tree duality formalism are implemented at integrand-level Euclidean space loop three-momentum, where hierarchies among internal and external scales well-defined. The ultraviolet behaviour individual contributions to asymptotic expansion emerges only first terms is renormalized locally four space-time dimensions. These two properties represent an advantage over method Expansion by Regions. We explore different approaches...
We argue that high-quality data on the reaction $e^+e^-\to π^+π^-η$ will allow one to determine doubly-virtual form factor $η\to γ^*γ^*$ in a model-independent way with controlled accuracy. This is an important step towards reliable evaluation of hadronic light-by-light scattering contribution anomalous magnetic moment muon. When analyzing existing for $e^+e^-\toπ^+π^-η$ total energies squared $k^2>1\text{GeV}^2$, we demonstrate effect $a_2$ meson provides natural breaking mechanism...
The Future Circular Collider (FCC) at CERN, a proposed 100-km circular facility with several colliders in succession, culminates 100 TeV proton-proton collider. It offers vast new domain of exploration particle physics, orders magnitude advances terms Precision, Sensitivity and Energy. implementation plan foresees, as first step, an Electroweak Factory electron-positron This high luminosity facility, operating between 90 365 GeV centre-of-mass energy, will study the heavy particles Standard...
This article gives a short overview of the future high-energy e + -collider projects.Both, linear and circular colliders offer an excellent potential for precision physics are shortly discussed.
We present the first comprehensive analysis of unitarity thresholds and anomalous scattering amplitudes at two loops beyond based on loop-tree duality, show how non-causal unphysical are locally cancelled in an efficient way when forest all dual on-shell cuts is considered as one. also prove that soft collinear singularities restricted to a compact region loop three-momenta, which necessary condition for implementing local cancellation infrared with ones appearing real emission; without...
The Loop-Tree Duality (LTD) theorem is an innovative technique to deal with multi-loop scattering amplitudes, leading integrand-level representations over Euclidean space. In this article, we review the last developments concerning framework, focusing on manifestly causal representation of Feynman integrals and definition dual local counter-terms cancel infrared singularities.
Computations in perturbative quantum field theory (pQFT) feature several aspects that, although intrinsically non-physical, are traditionally successfully eluded by modifying the dimen- sions of space–time. Closed loops pQFT implicitly extrapolate validity Standard Model (SM) to infinite energies—equivalent zero distance—much above Planck scale. We should expect this be a legitimate procedure if loop scattering amplitudes that contribute physical observables either suppressed at very high...