The Standard Model effective field theory (SMEFT) is one of the preferred approaches for studying particle physics in the present scenario. The dimension-six SMEFT operators are the most relevant ones and have been studied in various works. The renormalization group evolution equations of these operators are available in the literature and facilitate examining the SMEFT on combined...
The appearance of resonances in the spectrum of longitudinally polarized WW scattering would be a clear indication of the existence of a New Physics (NP) sector that is described by strong interactions. These processes, emerging in pp collisions, are intimately related to the Higgs mechanism so it seems natural to study the features of the Higgs boson and its potential if one wants to test...
In this talk we will briefly review the New Littlest Higgs model with T-parity (NLHT). This is introduced to cure the pathologies of the Littlest Higgs model with T-parity (LHT) in the fermionic sector. As a result of this, the NLHT includes new T-odd scalar particles and heavy fermions. The scalar fields receives their masses from the Coleman-Weinberg potential, independent of the scale of...
In many field theories, solitonic solutions admit localized excitations with unnaturally long lifetimes in their spectrum of perturbations. These bound states may play a significant role in the dynamics of solitons, and in particular, they could shed light on some aspects concerning the evolution of cosmic string networks. In this talk I will discuss the influence of this type of excitations...
Within the 2HDM, it is usual to impose a $Z2$ symmetry to avoid the presence of flavor-changing neutral currents in the model at the tree level. This symmetry can be softly broken by a term in the Lagrangian proportional to a new parameter $m_{12}$. This parameter introduces a new energy scale in the model and is only present in the scalar interactions of the 2HDM. We explore the possible...
Extensions of the Standard Model (SM) with new Abelian gauge groups allow for
kinetic mixing between the new gauge bosons and the hypercharge gauge boson,
resulting in mixing with the photon. In many models the mixing with the
hypercharge gauge boson captures only part of the kinetic mixing term with the
photon, since the new gauge bosons can also mix with the neutral component of
the...
Z and W boson production are fundamental processes at LHC. Theoretically higher order perturbative calculations also have been computed. The precision achieved by LHC data shows however the emergence of non-perturbative effects and new multi-dimentional hadronic structures, beyond PDF. I will discuss the current status of this research and its impactin current observables and future studies...
One of the greatest challenges in physics is to study quantum field theories (QFT) outside the perturbative regime. In particular, to better understand quantum chromodynamics (QCD), the theory that describes the strong nuclear force, in the non-perturbative regime, there are numerous tools available, among which the open quantum systems (OQS) formalism stands out. The quintessential case of...
The three-gluon vertex plays a central role in the infrared dynamics of Quan-
tum Chromodynamics (QCD). Gluon self-interaction shows the main diference
between this theory and others like quantum electrodynamics (QED), its non-
abelian nature. The appearance of a three-gluon vertex in the QCD Lagrangian
is intimately linked to both asymptotic freedom and con?nement in QCD. The
study of its...
We discuss quantum entanglement and violation of Bell inequalities in the H --> ZZ decay, in particular when the two Z-bosons decay into light leptons. Although such process implies an important suppression of the statistics, this is traded by clean signals from a "quasi maximally-entangled" system, which makes it very promising to check these crucial phenomena at high energy. We devise a...
Correlations play a fundamental role in many branches of physics, from quantum mechanics to particle physics and cosmology. In particular, the astonishing homogeneity of the angular distribution of the Cosmic Microwave Background (CMB) radiation across the sky (measured with high precision by WMAP and Planck missions) requires of an inflationary epoch right after the Big Bang to solve the...
A quantum algorithm application for Feynman loop integrals is illustrated. We present a proper modification of Grover's algorithm for the identification of causal singular configurations of multiloop Feynman diagrams. The quantum algorithm is implemented in a quantum simulator, the output obtained is directly translated to causal thresholds needed for the causal representation in the loop-tree duality.
We present a variational quantum eigensolver (VQE) algorithm for the efficient bootstrapping of the causal representation of multiloop Feynman diagrams in the Loop-Tree Duality (LTD) or, equivalently, the selection of acyclic configurations in directed graphs. A loop Hamiltonian based on the adjacency matrix describing a multiloop topology, and whose different energy levels correspond to the...
We study nonstandard effects at the COHERENT experiment using an Effective Field Theory approach. We include effects not only at detection but also at production, with all contributions present at the same time. We study the synergy with traditional precision measurements in the electroweak precision fit.
The search for predictive capabilities in the study of hadronic reactions and nuclear structure from the Standard Model, which describes the strong and electroweak interactions in nature, is a defining challenge that bridges nuclear and particle physics. In this talk, I will present some of the progress made in that direction by calculations using Lattice QCD (LQCD), a systematically...
