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Quark Confinement from different Dressed Gluon Propagators
(Research Square, 2023)The gap equation in quantum chromodynamics is solved by incorporating differ- ent gluon dressing functions, some of them derived from a quark-diquark potential that exhibits a conformal symmetry. By using the bare vertex ... -
Application of the data envelopment analysis technique to measure the environmental efficiency of the 27 countries of the European Union during the period 2012-2020
Cámara Aceituno, Juan; Hermoso Orzáez, Manuel Jesús; Terrados Cepeda, Julio; Mena Nieto, Ángel Isidro
; García Ramos, José Enrique (Springer Science and Business Media LLC., 2023-06)
In the last decade, we have experienced a changing geopolitical context that has caused changes in the energy context. In addition, human activity contributes to global warming or sea level rising, i.e., climate change. A ... -
Empirical Determination of the Pion Mass Distribution
Xu, Yinzhen; Raya, Khépani; Cui, Zhu-Fang; Roberts, Craig D.; Rodríguez Quintero, José (Cornell University, 2023)
Existing pion+nucleus Drell-Yan and electron+pion scattering data are used to develop ensembles of model-independent representations of the pion generalised parton distribution (GPD). Therewith, one arrives at a data-driven ... -
Spatiotemporal evolution of U and Th isotopes in a mine effluent highly polluted by Acid Mine Drainage (AMD)
Guerrero Márquez, José Luis; Suárez Vaz, Nuria; Paz Gómez, D. C.; Pérez Moreno, Silvia María; Bolívar Raya, Juan Pedro (Elsevier, 2023)
The spatiotemporal evolution of both U and Th isotopes in a mine effluent highly polluted by acid mine drainage (AMD) was evaluated. The acidic tributary, which born from the outflows of an abandoned sulfide mine, flows into ... -
Hints of the photometric period in radial velocity data of the X-ray binary HD 3191 with the Joan Oró telescope
(Springer, 2023-02)We focus our attention on the newly proposed X-ray binary system HD 3191 whose nature still lacks dynamical confirmation and accurate orbital parameters. The positional agreement of this object with a flaring gamma-ray ... -
Test Bench for Highly Segmented GRIT Double-Sided Silicon Strip Detectors: A Detector Quality Control Protocol
Dueñas Díaz, José Antonio; Cobo, Alex; López, Luis; Galtarossa, F.; Goasduff, Alain; Mengoni, D.; Sánchez Benítez, Ángel Miguel (MDPI, 2023-06)
This work deals with the characteristics of highly segmented double-sided silicon detectors. These are fundamental parts in many new state-of-the-art particle detection systems, and therefore they must perform optimally. ... -
Analysing the performance of radiological monitoring network during nuclear accidents
Sangiorgi, Marco; Hernández Ceballos, Miguel Ángel; Bolívar Raya, Juan Pedro (Elsevier, 2023)
JRODOS was used to simulate the dispersion of airborne radioactive material from a point source over the period 2012–2015. In total, 1331 radioactive plumes were simulated with the objective to investigate the influence ... -
Explaining the R(D) and R(D∗) anomalies in the B−L supersymmetric standard model with inverse seesaw mechanism
(American Physical Society (APS), 2023)We investigate the R(D) and R(D∗) anomalies in the context of the B−L extension of the Minimal Supersymmetric Standard Model with Inverse Seesaw. We demonstrate that the lepton penguin W±l¯νl (l=e,μ,τ) mediated by CP-even/odd ... -
Light-front wave functions of vector mesons in an algebraic model
Almeida Zamora, B.; Cobos Martínez, J.J.; Bashir, A.; Raya, Khépani; Rodríguez Quintero, José; Segovia, Jorge (American Physical Society (APS), 2023-04)
Inspired by the recent development of an algebraic model which provides an adequate and unified description of the internal structure of the lowest-lying pseudoscalar mesons, belonging both to the light quarks sector and ... -
A new Time-of-flight detector for the R3 B setup
Heil, M.; Sánchez Benítez, Ángel Miguel; Zanetti, L. (Springer, 2022)
We present the design, prototype developments and test results of the new time-of-flight detector (ToFD) which is part of the R3 B experimental setup at GSI and FAIR, Darmstadt, Germany. The ToFD detector is able to detect ... -
The Periodic Signals of Nova V1674 Herculis (2021)
Patterson, Joseph; Miguel Agustino, Enrique de; Wood, Matt A. (American Astronomical Society, 2022)
We present time-series photometry during the early decline phase of the extremely fast nova V1674 Herculis. The 2021 light curve showed periodic signals at 0.152921(3) days and 501.486(5) s, which we interpret as respectively ... -
A new efficiency calibration methodology for different atmospheric filter geometries by using coaxial Ge detectors
Barba Lobo, Alejandro; Bolívar Raya, Juan Pedro (Springer Science and Business Media LLC, 2023)
The study of the different pollutants present in atmospheric aerosols such as trace elements and radionuclides is essential to assess the air quality. To analyze the particulate matter (PM), atmospheric filters with different ... -
Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer
Le Crom, B.; Sánchez Benítez, Ángel Miguel; Vandebrouck, M. (Elsevier, 2022)
The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the fp-shell through the two-nucleon transfer reaction (p,3He) in inverse kinematics. The combination of ... -
The hidden symbiotic star SU Lyn -- detection of flickering in U band
(Cornell University, 2022)We report photometric observations of the hidden symbiotic star SU Lyn in the optical bands. In five nights we detect a weak flickering in U band with amplitude of about 0.05 magnitudes. No intranight variations are found ... -
Influence of State of Alarm Caused by COVID-19 on Noise in the City Centre of Huelva (Spain)
Fortes Garrido, Juan Carlos; Sánchez Sánchez, Rafael; Bolívar Raya, Juan Pedro (Polish Academy of Sciences, 2022)
At the beginning of the COVID-19 pandemic the government of Spain decreed the State of Alarm to confine the entire population at their homes, except for essential services. Therefore, the central objective of this study ... -
Revisiting evolution equations for generalised parton distributions
(Springer Open, 2022)We revisit the evolution of generalised parton distributions (GPDs) in momentum space. We formulate the evolution kernels at one loop in perturbative quantum chromodynamics (pQCD) in a form that is suitable for numerical ... -
Pion scalar, vector, and tensor form factors from a contact interaction
(American Physical Society, 2022)The pion scalar, vector, and tensor form factors are calculated within a symmetry-preserving contact interaction model (CI) of quantum chromodynamics (QCD), encompassed within a Dyson-Schwinger and Bethe-Salpeter equations ... -
Pseudoscalar mesons: Light front wave functions, GPDs, and PDFs
(American Physical Society, 2022)We develop a unified algebraic model which satisfactorily describes the internal structure of pion and kaon as well as heavy quarkonia (ηc and ηb). For each of these mesons, we compute their generalized parton distributions ... -
Lattice three-gluon vertex in extended kinematics: Planar degeneracy
Pinto Gómez, F.; Soto Borrero, Feliciano Carlos de; Ferreira, M. N.; Papavassiliou, J.; Rodríguez Quintero, José (Elsevier, 2023)
We present novel results for the three-gluon vertex, obtained from an extensive quenched lattice simulation in the Landau gauge. The simulation evaluates the transversely projected vertex, spanned on a special tensorial ... -
Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
Gamito, J.; Khalouf-Rivera, Jamil; Arias Carrasco, José Miguel; Pérez Fernández, Pedro; Pérez Bernal, Francisco (American Physical Society, 2022)
The basic Lipkin-Meshkov-Glick model displays a second-order ground-state quantum phase transition and an excited-state quantum phase transition (ESQPT). The inclusion of an anharmonic term in the Hamiltonian implies a ...
