A5011481912- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Formal Methods in Verification
- Black Holes and Theoretical Physics
- Model-Driven Software Engineering Techniques
- Advanced Software Engineering Methodologies
- High-Energy Particle Collisions Research
- Nuclear physics research studies
- Computational Physics and Python Applications
- Atomic and Subatomic Physics Research
- Flexible and Reconfigurable Manufacturing Systems
- Real-Time Systems Scheduling
- Embedded Systems Design Techniques
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Distributed and Parallel Computing Systems
- Petri Nets in System Modeling
- Nuclear reactor physics and engineering
- Noncommutative and Quantum Gravity Theories
- Muon and positron interactions and applications
Instituto de Física Corpuscular
2015-2024
Universitat de València
2015-2024
Dortmund University of Applied Sciences and Arts
2011-2023
Parc Científic de la Universitat de València
2022
Consejo Superior de Investigaciones Científicas
2003-2020
Federico Santa María Technical University
2013-2019
Centro Científico Tecnológico de Valparaíso
2013-2019
National Taiwan University
2018
University of Cambridge
2018
Universidad Técnica Federico Santa María
2014
We examine the theoretical motivations for long-lived particle (LLP) signals at LHC in a comprehensive survey of Standard Model (SM) extensions. LLPs are common prediction wide range theories that address unsolved fundamental mysteries such as naturalness, dark matter, baryogenesis and neutrino masses, represent natural generic possibility physics beyond SM (BSM). In most cases LLP lifetime can be treated free parameter from $\mu$m scale up to Big Bang Nucleosynthesis limit $\sim 10^7$m....
Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at weak scale. When produced experiments such as Large Hadron Collider (LHC) CERN, these long-lived (LLPs) decay far from interaction vertex of primary proton-proton collision. Such LLP signatures distinct those promptly decaying targeted by majority searches for new physics LHC, often requiring customized techniques identify, example, significantly displaced vertices, tracks with...
The simplest unified extension of the minimal supersymmetric standard model with bilinear R-parity violation naturally predicts a hierarchical neutrino mass spectrum, in which one acquires by mixing neutralinos, while other two get radiatively. We have performed full one-loop calculation neutralino-neutrino matrix ${R}_{p}$ model, taking special care to achieve manifestly gauge invariant calculation. Moreover we renormalization heaviest neutrino, needed order meaningful results. atmospheric...
New constraints on the parameters of minimal supersymmetric standard model with explicit $R$-parity violation ( ${R}_{p}$MSSM) are obtained from current experimental lower bound half-life ${}^{76}$Ge $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ decay. These shown to be more stringent than those other low-energy processes and competitive or even expected accelerator searches.
Sterile neutrinos with masses in the range (1-100) GeV, have been searched for a variety of experiments. Here, we discuss prospects to search sterile at LHC using displaced vertices. Two different cases are discussed: (i) standard model extended and (ii) right-handed left-right symmetric extension model. A dedicated vertex will allow probe parts parameter space not accessible other searches, but require large luminosity both cases.
Neutrinoless double beta decay is the most powerful tool to probe not only for Majorana neutrino masses but lepton number violating physics in general. We discuss relations between violation, and mass, review a general Lorentz invariant parametrization of rate, highlight different new models showing how mechanisms can trigger decay, finally possibilities discriminate test these complementary experiments.
We present the activities of `New Physics' working group for `Physics at TeV Colliders' workshop (Les Houches, France, 5--23 June, 2017). Our report includes new physics studies connected with Higgs boson and its properties, direct search strategies, reinterpretation LHC results in building viable models computational tool developments.
We systematically analyze the d = 5 Weinberg operator at 2-loop order. Using a diagrammatic approach, we identify two different interesting categories of neutrino mass models: (i) Genuine models for which both, tree-level and 1-loop contributions, are guaranteed to be absent. And (ii) finite diagrams, correspond generation some particular vertex appearing in given model, thus being effectively 2-loop. From large list all possible vast majority infinite corrections lower order only moderately...
In the framework of low-energy effective field theory Standard Model extended with heavy neutral leptons (HNLs), we calculate production rates HNLs from meson decays triggered by dimension-six operators. We consider both lepton-number-conserving and lepton-number-violating four-fermion operators involving either a pair or single HNL. Assuming that are long-lived, perform simulations investigate reach proposed far detectors at high-luminosity LHC to (i) active-heavy neutrino mixing (ii)...
The full setup of the Heidelberg-Moscow double \ensuremath{\beta} decay experiment is presented. This gives at present most stringent upper bound, improving neutrino mass limit into sub-eV range. Out 19.2 kg 86% ${\mathrm{enriched}}^{76}$Ge five crystals were grown with a total 11.51 kg. Since February 1995 all detectors, corresponding to 10.96 active mass, are in regular operation Gran Sasso underground laboratory, four them common shield. No signal observed for neutrinoless...
Neutrinoless double beta decay ($\znbb$) induced by superparticle exchange is investigated. Such a supersymmetric (SUSY) mechanism of $\znbb$ arises within SUSY theories with R-parity non-conservation (\rp). We consider the minimal standard model (MSSM) explicit \rp terms in superpotential (\rp MSSM). The rate for calculated. Numerical values nuclear matrix elements experimentally most interesting isotopes are calculated pn-QRPA. Constraints on MSSM parameter space extracted from current...
Recently Babu, Ma, and Valle proposed a model of quark lepton mixing based on ${A}_{4}$ symmetry [Phys. Lett. B 552, 207 (2003)]. Within this model, the slepton mixings are intimately related. We perform numerical study in order to derive masses agreement with present data from neutrino physics. show that, starting threefold degeneracy at high-energy scale, viable low-energy mass matrix can indeed be obtained constraints flavor violating $\ensuremath{\mu}$ $\ensuremath{\tau}$ decays. The...
We give an analytical calculation of solar neutrino masses and mixing at one-loop order within bilinear R-parity breaking supersymmetry, compare our results to the exact numerical calculation. Our method is based on a systematic perturbative expansion violating vertices leading order. find in general quite good agreement between approximate full calculations, but expressions are much simpler implement. formalism works especially well for case large angle Mikheyev-Smirnov-Wolfenstein...
\ensuremath{\beta}-decay properties of nuclei are studied in the framework proton-neutron quasiparticle random-phase approximation with a schematic Gamow-Teller residual interaction. Particle-hole and particle-particle terms separable force consistently included for both ${\mathrm{\ensuremath{\beta}}}^{+}$ ${\mathrm{\ensuremath{\beta}}}^{\mathrm{\ensuremath{-}}}$ directions, their strengths fixed as smooth functions mass number A such way that calculation reproduces observed nuclei. Using...
Low energy supersymmetry with bilinear breaking of R-parity leads to a weak-scale seesaw mechanism for the atmospheric neutrino scale and radiative solar scale. The model has striking implications collider searches supersymmetric particles. Assuming that lightest SUSY particle is neutralino we demonstrate (i) decays inside detector even tiny masses. (ii) Measurements mixing angles lead predictions ratios various branching implying an independent test physics at future colliders, such as...
We consider tri-bimaximal lepton mixing within low-scale seesaw schemes where light neutrino masses arise from TeV scale physics, potentially accessible at the Large Hadron Collider (LHC). Two examples are considered, based on A4 flavor symmetry realized inverse or linear mechanisms. Both highly predictive so that in both sector effectively depends only three mass parameters and one Majorana phase, with no CP violation oscillations. find leads to a lower bound for neutrinoless double beta...
We propose a new motivation for the stability of dark matter (DM). suggest that same non-abelian discrete flavor symmetry which accounts observed pattern neutrino oscillations, spontaneously breaks to Z2 subgroup renders DM stable. The simplest scheme leads scalar doublet potentially detectable in nuclear recoil experiments, inverse mass hierarchy, hence neutrinoless double beta decay rate accessible upcoming searches, while reactor angle equal zero gives no CP violation oscillations.
Here we propose an A(4) flavor symmetry model that implies a lower bound on the neutrinoless double beta decay rate, corresponding to effective mass parameter M{ee} > or similar 0.03 eV, and direct correlation between expected magnitude of CP violation in neutrino oscillations value sin{2}theta{13}, as well nearly maximal phase delta.