Moderadores
FÍSICA TEÓRICA
- Mikael Chala (Universidad de Granada)
- Diego Blas (UAB/IFAE)
FÍSICA TEÓRICA
- Mikael Chala (Universidad de Granada)
- Diego Blas (UAB/IFAE)
FÍSICA TEÓRICA
- Mikael Chala (Universidad de Granada)
- Diego Blas (UAB/IFAE)
Finite Feynman integrals have been advocated as the optimal components for constructing a basis of master
integrals in multiloop calculations, due to their improved analytic and numerical properties. In this paper, we
show how the Loop-Tree Duality (LTD) is particularly well suited for systematically identifying finite integrals,
as it makes the origin of infrared and threshold singularities...
In quantum field theories, the addition of higher-derivative terms to the free Lagrangian density greatly improves its renormalizability. In fact, an extension of the Einstein-Hilbert action with such terms could be renormalized, potentially yielding a quantum field theory of gravity applicable at all energy scales. The drawback is the appearance of ghosts, pathological degrees of freedom that...
In this talk, I will present the low-energy phenomenology of the so-called Minimal Flavor Deconstruction scenario in the lepton sector, with a special focus on the interplay between flavor and CP violation. Starting from the ultraviolet completion of the model, I will show how the effective Yukawa structure can be derived through a systematic spurion expansion beyond leading order. In...
The rapidly evolving landscape of exotic hadrons is opening a new frontier in our understanding of strongly interacting matter. Recent experimental discoveries of tetraquark and pentaquark candidates have established an increasingly rich spectrum of multiquark states, while their microscopic nature remains largely unresolved. Competing pictures include compact multiquark configurations,...
Particle production from the vacuum is one of the most remarkable consequences of quantum field theory in the presence of non-dynamical backgrounds, with the Schwinger effect providing a paradigmatic example. In this work, we study particle-production processes in quantum field theories coupled to non-dynamical backgrounds within a functional formalism.
The external field is incorporated...
TeV string-mass-scale strings have been excluded experimentally at colliders, as their effects have not been observed at the Large Hadron Collider (CERN).
On the other hand, higher-scale string theory, with mass scales typically close to the Planck scale, is often regarded as experimentally inaccessible due to the enormous energies required for direct tests, and far beyond the reach of...
We present a novel approach to computing duality relations between Quantum Chromodynamics (QCD) and gravity in the Multi-Regge Kinematics (MRK) limit. This framework leverages Mathematica-based tools—FeynArts, FeynCalc, and FeynGrav—with a new implementation that integrates FeynGrav into FeynArts, enabling significantly faster generation of gravity diagrams. We outline the procedure through...
Based on the theoretical framework of Non-Relativistic QCD (NRQCD), we study the hadroproduction of the pseudoscalar heavy quarkonia, $\eta_c$ and $\eta_b$ mesons, at moderate-to-large transverse momenta. Relying on the single-parton collinear fragmentation mechanism within a variable-flavor number scheme, we use NRQCD to describe the formation of the heavy quark bound state at the initial...
The muon anomalous magnetic moment, $a_\mu = (g_\mu − 2)/2$, is a valuable observable for constraining new physics due to its precise measurement. Its study in the so-called ``Higher-derivative'' theories of gravity, which introduce massive gravitons, has proven helpful in understanding their behaviour as well as their relation to General Relativity. In this talk, we discuss the one-loop...
